v7.0.0

.smartconfig.json

@@ -5,7 +5,7 @@
       "githost": "code.foss.global",
       "gitscope": "push.rocks",
       "gitrepo": "smartmongo",
-      "description": "A module for creating and managing a local MongoDB instance for testing purposes.",
+      "description": "A MongoDB memory server toolkit for testing and development, providing real MongoDB replica sets via mongodb-memory-server.",
       "npmPackagename": "@push.rocks/smartmongo",
       "license": "MIT",
       "projectDomain": "push.rocks",

.vscode/settings.json

@@ -1,7 +1,7 @@
 {
   "json.schemas": [
     {
-      "fileMatch": ["/npmextra.json"],
+      "fileMatch": ["/.smartconfig.json"],
       "schema": {
         "type": "object",
         "properties": {

changelog.md

@@ -1,5 +1,48 @@
 # Changelog
 
+## 2026-03-26 - 7.0.0 - BREAKING CHANGE(api)
+reduce the package to the SmartMongo memory replica set API and remove bundled TsmDB and LocalTsmDb modules
+
+- remove exports and source code for TsmDB, LocalTsmDb, and related utilities, handlers, storage adapters, and tests
+- flatten SmartMongo into the main package entrypoint and keep mongodb-memory-server-based replica set startup as the core feature
+- trim dependencies and documentation to focus the package on in-memory MongoDB replica sets for testing and development
+
+## 2026-03-26 - 5.1.1 - fix(build)
+migrate smartconfig metadata and refresh build dependencies
+
+- replace npmextra.json with .smartconfig.json and update packaged config file inclusion
+- switch the build script to tsbuild tsfolders
+- update core build and runtime dependencies and add explicit TypeScript type annotations to satisfy newer tooling
+
+## 2026-02-03 - 5.1.0 - feat(localtsmdb)
+export ILocalTsmDbConnectionInfo and expand LocalTsmDb/TsmDB documentation and examples
+
+- Exported new type ILocalTsmDbConnectionInfo from ts_local (ts/index.ts)
+- Added LocalTsmDb configuration example, methods table, and ConnectionInfo interface to README
+- Documented Unix socket vs TCP connection modes and updated usage examples (TCP and socket examples)
+- Expanded TsmDB docs: additional server properties, aggregation stages, regex examples, index operations, database ops, checksums, and wire protocol commands
+- Updated architecture notes to include Unix socket support and new engine components (QueryEngine, UpdateEngine, AggregationEngine)
+
+## 2026-02-03 - 5.0.0 - BREAKING CHANGE(localtsmdb)
+add Unix socket support and change LocalTsmDb API to return connection info instead of a MongoClient
+
+- LocalTsmDb.start() now returns ILocalTsmDbConnectionInfo { socketPath, connectionUri } instead of a connected MongoClient
+- Removed internal MongoClient management: consumers must create/connect/close their own MongoClient using the returned connectionUri (close client before calling db.stop())
+- Added ILocalTsmDbConnectionInfo type and getConnectionInfo() (replaces getClient())
+- TsmdbServer: added socketPath option to listen on Unix sockets, cleans up stale socket files on start/stop, and encodes socket paths in getConnectionUri()
+- LocalTsmDb can auto-generate socket paths in the OS temp dir; LocalTsmDb no longer depends on the mongodb package internally (lightweight Unix socket wrapper)
+- Updated docs and tests to use MongoClient externally and to demonstrate socketPath/connectionUri workflow
+- ts_local plugins no longer export net (net usage moved to server implementation)
+
+## 2026-02-03 - 4.3.0 - feat(docs)
+add LocalTsmDb documentation and examples; update README code samples and imports; correct examples and variable names; update package author
+
+- Introduce LocalTsmDb: zero-config local database with automatic persistence, auto port discovery, and pre-connected client (added Quick Start, API, Features, and testing examples).
+- Expand comparison table to include LocalTsmDb alongside SmartMongo and TsmDB.
+- Update README examples: new LocalTsmDb usage, reorder options (LocalTsmDb, TsmDB, SmartMongo), rename test DB variable (db -> testDb), and adjust test snippets for Jest/Mocha and tap. 
+- Adjust code snippets and API notes: switch some example imports to use tsmdb, replace FileStorageAdapter references, change planner.createPlan to await planner.plan, and use wal.getEntriesAfter(...) without awaiting. 
+- Update package.json author from 'Lossless GmbH' to 'Task Venture Capital GmbH'.
+
 ## 2026-02-03 - 4.2.1 - fix(package.json)
 replace main and typings with exports field pointing to ./dist_ts/index.js
 

license

@@ -1,4 +1,4 @@
-Copyright (c) 2021 Lossless GmbH (hello@lossless.com)
+Copyright (c) 2021 Task Venture Capital GmbH (hello@task.vc)
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

package.json

@@ -1,37 +1,33 @@
 {
   "name": "@push.rocks/smartmongo",
-  "version": "4.2.1",
+  "version": "7.0.0",
   "private": false,
-  "description": "A module for creating and managing a local MongoDB instance for testing purposes.",
+  "description": "A MongoDB memory server toolkit for testing and development, providing real MongoDB replica sets via mongodb-memory-server.",
   "exports": {
     ".": "./dist_ts/index.js"
   },
   "type": "module",
-  "author": "Lossless GmbH",
+  "author": "Task Venture Capital GmbH",
   "license": "MIT",
   "scripts": {
     "test": "(tstest test/. --verbose --logfile --timeout 60)",
-    "build": "(tsbuild --web)",
+    "build": "(tsbuild tsfolders)",
     "buildDocs": "tsdoc"
   },
   "devDependencies": {
-    "@git.zone/tsbuild": "^4.1.2",
-    "@git.zone/tsbundle": "^2.8.3",
-    "@git.zone/tsrun": "^2.0.1",
-    "@git.zone/tstest": "^3.1.8",
-    "@types/node": "^25.1.0",
-    "mongodb": "^7.0.0"
+    "@git.zone/tsbuild": "^4.4.0",
+    "@git.zone/tsbundle": "^2.10.0",
+    "@git.zone/tsrun": "^2.0.2",
+    "@git.zone/tstest": "^3.6.1",
+    "@types/node": "^25.5.0",
+    "mongodb": "^7.1.1"
   },
   "dependencies": {
-    "@push.rocks/mongodump": "^1.0.7",
-    "@push.rocks/smartdata": "^5.0.23",
-    "@push.rocks/smartfs": "^1.3.1",
-    "@push.rocks/smartpath": "^5.0.11",
-    "@push.rocks/smartpromise": "^4.0.3",
-    "@push.rocks/smartrx": "^3.0.0",
-    "bson": "^6.10.0",
-    "mingo": "^7.2.0",
-    "mongodb-memory-server": "^10.1.4"
+    "@push.rocks/mongodump": "^1.1.0",
+    "@push.rocks/smartdata": "^7.1.3",
+    "@push.rocks/smartpath": "^6.0.0",
+    "@push.rocks/smartpromise": "^4.2.3",
+    "mongodb-memory-server": "^11.0.1"
   },
   "browserslist": [
     "last 1 chrome versions"
@@ -45,13 +41,12 @@
     "dist_ts_web/**/*",
     "assets/**/*",
     "cli.js",
-    "npmextra.json",
+    ".smartconfig.json",
     "readme.md"
   ],
   "keywords": [
     "mongodb",
     "testing",
-    "local database",
     "replica set",
     "memory server",
     "database management",

readme.md

@@ -1,99 +1,78 @@
 # @push.rocks/smartmongo
 
-A powerful MongoDB toolkit for testing and development — featuring both a real MongoDB memory server (**SmartMongo**) and an ultra-fast, lightweight wire-protocol-compatible in-memory database server (**TsmDB**). 🚀
+A MongoDB memory server toolkit for testing and development — spin up real MongoDB replica sets on the fly with zero configuration. 🚀
 
 ## Install
 
 ```bash
-npm install @push.rocks/smartmongo --save-dev
-# or
 pnpm add -D @push.rocks/smartmongo
+# or
+npm install @push.rocks/smartmongo --save-dev
 ```
 
 ## Issue Reporting and Security
 
 For reporting bugs, issues, or security vulnerabilities, please visit [community.foss.global/](https://community.foss.global/). This is the central community hub for all issue reporting. Developers who sign and comply with our contribution agreement and go through identification can also get a [code.foss.global/](https://code.foss.global/) account to submit Pull Requests directly.
 
-## Overview
+## What It Does
 
-`@push.rocks/smartmongo` provides two powerful approaches for MongoDB in testing and development:
+`@push.rocks/smartmongo` wraps [mongodb-memory-server](https://github.com/nodkz/mongodb-memory-server) to give you a **real MongoDB replica set** running entirely in memory. It downloads and manages the MongoDB binary for you — just `createAndStart()` and you're good to go.
 
-| Feature | SmartMongo | TsmDB |
-|---------|------------|---------|
-| **Type** | Real MongoDB (memory server) | Pure TypeScript wire protocol server |
-| **Speed** | ~2-5s startup | ⚡ Instant startup (~5ms) |
-| **Compatibility** | 100% MongoDB | MongoDB driver compatible |
-| **Dependencies** | Downloads MongoDB binary | Zero external dependencies |
-| **Replication** | ✅ Full replica set support | Single node emulation |
-| **Use Case** | Integration testing | Unit testing, CI/CD |
-| **Persistence** | Dump to directory | Optional file/memory persistence |
+Perfect for:
 
-## 🚀 Quick Start
+- ⚡ **Integration tests** that need 100% MongoDB compatibility
+- 🧪 **CI/CD pipelines** where you can't install MongoDB system-wide
+- 🔬 **Development environments** that need a disposable database
+- 📦 **Data dump/export** with built-in support for dumping collections to disk
 
-### Option 1: SmartMongo (Real MongoDB)
+> 💡 **Looking for a lightweight, pure-TypeScript alternative?** Check out [`@push.rocks/smartdb`](https://code.foss.global/push.rocks/smartdb) — a wire-protocol-compatible MongoDB server with zero binary dependencies, instant startup, and file-based persistence.
 
-Spin up a real MongoDB replica set in memory — perfect for integration tests that need full MongoDB compatibility.
+## Quick Start
 
 ```typescript
 import { SmartMongo } from '@push.rocks/smartmongo';
 
-// Start a MongoDB replica set
+// Start a MongoDB replica set (downloads binary automatically on first run)
 const mongo = await SmartMongo.createAndStart();
 
-// Get connection details
+// Get connection details for your app or ORM
 const descriptor = await mongo.getMongoDescriptor();
-console.log(descriptor.mongoDbUrl); // mongodb://127.0.0.1:xxxxx/...
+console.log(descriptor.mongoDbUrl);
+// => mongodb://127.0.0.1:xxxxx/?replicaSet=testset
 
-// Use with your MongoDB client or ORM
-// ... run your tests ...
-
-// Clean up
-await mongo.stop();
-```
-
-### Option 2: TsmDB (Wire Protocol Server)
-
-A lightweight, pure TypeScript MongoDB-compatible server that speaks the wire protocol — use the official `mongodb` driver directly!
-
-```typescript
-import { tsmdb } from '@push.rocks/smartmongo';
+// Use with any MongoDB client
 import { MongoClient } from 'mongodb';
-
-// Start TsmDB server
-const server = new tsmdb.TsmdbServer({ port: 27017 });
-await server.start();
-
-// Connect with the official MongoDB driver!
-const client = new MongoClient('mongodb://127.0.0.1:27017');
+const client = new MongoClient(descriptor.mongoDbUrl);
 await client.connect();
 
-// Use exactly like real MongoDB
-const db = client.db('myapp');
-await db.collection('users').insertOne({ name: 'Alice', age: 30 });
+const db = client.db(descriptor.mongoDbName);
+await db.collection('users').insertOne({ name: 'Alice', role: 'admin' });
 
 const user = await db.collection('users').findOne({ name: 'Alice' });
-console.log(user); // { _id: ObjectId(...), name: 'Alice', age: 30 }
+console.log(user); // { _id: ObjectId(...), name: 'Alice', role: 'admin' }
 
 // Clean up
 await client.close();
-await server.stop();
+await mongo.stop();
 ```
 
-## 📖 SmartMongo API
+## API
 
-### Creating an Instance
+### `SmartMongo.createAndStart(replCount?: number)`
+
+Static factory method that creates and starts a SmartMongo instance.
 
 ```typescript
-import { SmartMongo } from '@push.rocks/smartmongo';
-
-// Default: single replica
+// Single replica (default)
 const mongo = await SmartMongo.createAndStart();
 
-// Multiple replicas for testing replication
+// Multi-replica for testing replication scenarios
 const mongo = await SmartMongo.createAndStart(3);
 ```
 
-### Getting Connection Details
+### `getMongoDescriptor()`
+
+Returns an `IMongoDescriptor` with the connection URL and database name, compatible with `@push.rocks/smartdata` and other push.rocks modules.
 
 ```typescript
 const descriptor = await mongo.getMongoDescriptor();
@@ -103,461 +82,91 @@ const descriptor = await mongo.getMongoDescriptor();
 // }
 ```
 
-### Stopping & Cleanup
+### `stop()`
+
+Stops the replica set and cleans up all resources (temporary files, processes).
 
 ```typescript
-// Simple stop (data discarded)
 await mongo.stop();
+```
 
-// Stop and dump data to disk for inspection
-await mongo.stopAndDumpToDir('./test-data');
+### `stopAndDumpToDir(dir, nameFunction?, emptyDir?)`
+
+Stops the replica set **and** dumps all collections to a directory on disk before cleanup. Useful for debugging or archiving test data.
+
+```typescript
+// Dump all collections with default naming
+await mongo.stopAndDumpToDir('./test-output');
 
 // With custom file naming
-await mongo.stopAndDumpToDir('./test-data', (doc) => `${doc.collection}-${doc._id}.bson`);
+await mongo.stopAndDumpToDir('./test-output', (doc) => `${doc.collection}-${doc._id}.bson`);
+
+// Keep existing files in the directory (don't empty it first)
+await mongo.stopAndDumpToDir('./test-output', undefined, false);
 ```
 
-## 🔧 TsmDB API
+### `readyPromise`
 
-### Server Configuration
+A promise that resolves when the replica set is fully started and ready to accept connections.
 
 ```typescript
-import { tsmdb } from '@push.rocks/smartmongo';
-
-const server = new tsmdb.TsmdbServer({
-  port: 27017,           // Default MongoDB port
-  host: '127.0.0.1',     // Bind address
-  storage: 'memory',     // 'memory' or 'file'
-  storagePath: './data', // For file-based storage
-});
-
-await server.start();
-console.log(server.getConnectionUri()); // mongodb://127.0.0.1:27017
-
-// Server properties
-console.log(server.running);              // true
-console.log(server.getUptime());          // seconds
-console.log(server.getConnectionCount()); // active connections
-
-await server.stop();
+const mongo = new SmartMongo();
+mongo.start(2); // non-blocking
+await mongo.readyPromise; // wait for startup
 ```
 
-### Supported MongoDB Operations
+## Testing Examples
 
-TsmDB supports the core MongoDB operations via the wire protocol:
-
-#### 🔹 CRUD Operations
-```typescript
-// Insert
-await collection.insertOne({ name: 'Bob' });
-await collection.insertMany([{ a: 1 }, { a: 2 }]);
-
-// Find
-const doc = await collection.findOne({ name: 'Bob' });
-const docs = await collection.find({ age: { $gte: 18 } }).toArray();
-
-// Update
-await collection.updateOne({ name: 'Bob' }, { $set: { age: 25 } });
-await collection.updateMany({ active: false }, { $set: { archived: true } });
-
-// Delete
-await collection.deleteOne({ name: 'Bob' });
-await collection.deleteMany({ archived: true });
-
-// Replace
-await collection.replaceOne({ _id: id }, { name: 'New Bob', age: 30 });
-
-// Find and Modify
-const result = await collection.findOneAndUpdate(
-  { name: 'Bob' },
-  { $inc: { visits: 1 } },
-  { returnDocument: 'after' }
-);
-```
-
-#### 🔹 Query Operators
-```typescript
-// Comparison
-{ age: { $eq: 25 } }
-{ age: { $ne: 25 } }
-{ age: { $gt: 18, $lt: 65 } }
-{ age: { $gte: 18, $lte: 65 } }
-{ status: { $in: ['active', 'pending'] } }
-{ status: { $nin: ['deleted'] } }
-
-// Logical
-{ $and: [{ age: { $gte: 18 } }, { active: true }] }
-{ $or: [{ status: 'active' }, { admin: true }] }
-{ $not: { status: 'deleted' } }
-
-// Element
-{ email: { $exists: true } }
-{ type: { $type: 'string' } }
-
-// Array
-{ tags: { $all: ['mongodb', 'database'] } }
-{ scores: { $elemMatch: { $gte: 80, $lt: 90 } } }
-{ tags: { $size: 3 } }
-```
-
-#### 🔹 Update Operators
-```typescript
-{ $set: { name: 'New Name' } }
-{ $unset: { tempField: '' } }
-{ $inc: { count: 1 } }
-{ $mul: { price: 1.1 } }
-{ $min: { lowScore: 50 } }
-{ $max: { highScore: 100 } }
-{ $push: { tags: 'new-tag' } }
-{ $pull: { tags: 'old-tag' } }
-{ $addToSet: { tags: 'unique-tag' } }
-{ $pop: { queue: 1 } }  // Remove last
-{ $pop: { queue: -1 } } // Remove first
-```
-
-#### 🔹 Aggregation Pipeline
-```typescript
-const results = await collection.aggregate([
-  { $match: { status: 'active' } },
-  { $group: { _id: '$category', total: { $sum: '$amount' } } },
-  { $sort: { total: -1 } },
-  { $limit: 10 },
-  { $project: { category: '$_id', total: 1, _id: 0 } }
-]).toArray();
-```
-
-Supported stages: `$match`, `$project`, `$group`, `$sort`, `$limit`, `$skip`, `$unwind`, `$lookup`, `$addFields`, `$count`, `$facet`, and more.
-
-#### 🔹 Index Operations
-```typescript
-await collection.createIndex({ email: 1 }, { unique: true });
-await collection.createIndex({ name: 1, age: -1 });
-const indexes = await collection.listIndexes().toArray();
-await collection.dropIndex('email_1');
-```
-
-#### 🔹 Database Operations
-```typescript
-// List databases
-const dbs = await client.db().admin().listDatabases();
-
-// List collections
-const collections = await db.listCollections().toArray();
-
-// Create/drop collections
-await db.createCollection('newcollection');
-await db.dropCollection('oldcollection');
-
-// Drop database
-await db.dropDatabase();
-```
-
-#### 🔹 Count & Distinct
-```typescript
-// Count documents
-const total = await collection.countDocuments({});
-const active = await collection.countDocuments({ status: 'active' });
-const estimated = await collection.estimatedDocumentCount();
-
-// Distinct values
-const departments = await collection.distinct('department');
-const activeDepts = await collection.distinct('department', { status: 'active' });
-```
-
-#### 🔹 Bulk Operations
-```typescript
-const result = await collection.bulkWrite([
-  { insertOne: { document: { name: 'Bulk1' } } },
-  { updateOne: { filter: { name: 'John' }, update: { $set: { bulk: true } } } },
-  { deleteOne: { filter: { name: 'Expired' } } },
-  { replaceOne: { filter: { _id: id }, replacement: { name: 'Replaced' } } }
-]);
-
-console.log(result.insertedCount);  // 1
-console.log(result.modifiedCount);  // 1
-console.log(result.deletedCount);   // 1
-```
-
-### Storage Adapters
-
-TsmDB supports pluggable storage with data integrity features:
-
-```typescript
-// In-memory (default) - fast, data lost on stop
-const server = new tsmdb.TsmdbServer({ storage: 'memory' });
-
-// In-memory with persistence - periodic snapshots to disk
-const server = new tsmdb.TsmdbServer({
-  storage: 'memory',
-  persistPath: './data/snapshot.json',
-  persistIntervalMs: 30000  // Save every 30 seconds
-});
-
-// File-based - persistent storage with optional checksums
-import { FileStorageAdapter } from '@push.rocks/smartmongo/tsmdb';
-
-const adapter = new FileStorageAdapter('./data/tsmdb', {
-  enableChecksums: true,   // CRC32 checksums for data integrity
-  strictChecksums: false   // Log warnings vs throw on mismatch
-});
-```
-
-## ⚡ Performance & Reliability Features
-
-TsmDB includes enterprise-grade features for robustness:
-
-### 🔍 Index-Accelerated Queries
-
-Indexes are automatically used to accelerate queries. Instead of scanning all documents, TsmDB uses:
-
-- **Hash indexes** for equality queries (`$eq`, `$in`)
-- **B-tree indexes** for range queries (`$gt`, `$gte`, `$lt`, `$lte`)
-
-```typescript
-// Create an index
-await collection.createIndex({ email: 1 });
-await collection.createIndex({ age: 1 });
-
-// These queries will use the index (fast!)
-await collection.findOne({ email: 'alice@example.com' }); // Uses hash lookup
-await collection.find({ age: { $gte: 18, $lt: 65 } });    // Uses B-tree range scan
-```
-
-### 📊 Query Planner
-
-TsmDB includes a query planner that analyzes queries and selects optimal execution strategies:
-
-```typescript
-import { tsmdb } from '@push.rocks/smartmongo';
-
-// For debugging, you can access the query planner
-const planner = new tsmdb.QueryPlanner(indexEngine);
-const plan = planner.createPlan(filter);
-
-console.log(plan);
-// {
-//   type: 'IXSCAN',           // or 'IXSCAN_RANGE', 'COLLSCAN'
-//   indexName: 'email_1',
-//   estimatedCost: 1,
-//   selectivity: 0.001
-// }
-```
-
-### 📝 Write-Ahead Logging (WAL)
-
-For durability, TsmDB supports write-ahead logging:
-
-```typescript
-import { tsmdb } from '@push.rocks/smartmongo';
-
-const wal = new tsmdb.WAL('./data/wal.log');
-await wal.initialize();
-
-// WAL entries include:
-// - LSN (Log Sequence Number)
-// - Timestamp
-// - Operation type (insert, update, delete, checkpoint)
-// - Document data (BSON serialized)
-// - CRC32 checksum
-
-// Recovery support
-const entries = await wal.getEntriesAfter(lastCheckpointLsn);
-```
-
-### 🔐 Session Management
-
-TsmDB tracks client sessions with automatic timeout and transaction linking:
-
-```typescript
-// Sessions are automatically managed when using the MongoDB driver
-const session = client.startSession();
-
-try {
-  session.startTransaction();
-  await collection.insertOne({ name: 'Alice' }, { session });
-  await collection.updateOne({ name: 'Bob' }, { $inc: { balance: 100 } }, { session });
-  await session.commitTransaction();
-} catch (error) {
-  await session.abortTransaction();
-} finally {
-  session.endSession();
-}
-
-// Session features:
-// - Automatic session timeout (30 minutes default)
-// - Transaction auto-abort on session expiry
-// - Session activity tracking
-```
-
-### ✅ Data Integrity Checksums
-
-File-based storage supports CRC32 checksums to detect corruption:
-
-```typescript
-import { FileStorageAdapter } from '@push.rocks/smartmongo/tsmdb';
-
-const adapter = new FileStorageAdapter('./data', {
-  enableChecksums: true,
-  strictChecksums: true  // Throw error on corruption (vs warning)
-});
-
-// Documents are checksummed on write, verified on read
-// Checksums are automatically stripped before returning to client
-```
-
-### 📋 Supported Wire Protocol Commands
-
-| Category | Commands |
-|----------|----------|
-| **Handshake** | `hello`, `isMaster` |
-| **CRUD** | `find`, `insert`, `update`, `delete`, `findAndModify`, `getMore`, `killCursors` |
-| **Aggregation** | `aggregate`, `count`, `distinct` |
-| **Indexes** | `createIndexes`, `dropIndexes`, `listIndexes` |
-| **Transactions** | `startTransaction`, `commitTransaction`, `abortTransaction` |
-| **Sessions** | `startSession`, `endSessions` |
-| **Admin** | `ping`, `listDatabases`, `listCollections`, `drop`, `dropDatabase`, `create`, `serverStatus`, `buildInfo`, `dbStats`, `collStats` |
-
-TsmDB supports MongoDB wire protocol versions 0-21, compatible with MongoDB 3.6 through 7.0 drivers.
-
-## 🧪 Testing Examples
-
-### Jest/Mocha with TsmDB
-
-```typescript
-import { tsmdb } from '@push.rocks/smartmongo';
-import { MongoClient, Db } from 'mongodb';
-
-let server: tsmdb.TsmdbServer;
-let client: MongoClient;
-let db: Db;
-
-beforeAll(async () => {
-  server = new tsmdb.TsmdbServer({ port: 27117 });
-  await server.start();
-
-  client = new MongoClient('mongodb://127.0.0.1:27117');
-  await client.connect();
-  db = client.db('test');
-});
-
-afterAll(async () => {
-  await client.close();
-  await server.stop();
-});
-
-beforeEach(async () => {
-  // Clean slate for each test
-  await db.dropDatabase();
-});
-
-test('should insert and find user', async () => {
-  const users = db.collection('users');
-  await users.insertOne({ name: 'Alice', email: 'alice@example.com' });
-
-  const user = await users.findOne({ name: 'Alice' });
-  expect(user?.email).toBe('alice@example.com');
-});
-```
-
-### With @push.rocks/tapbundle
+### With @git.zone/tstest (tapbundle)
 
 ```typescript
 import { expect, tap } from '@git.zone/tstest/tapbundle';
-import { tsmdb } from '@push.rocks/smartmongo';
+import { SmartMongo } from '@push.rocks/smartmongo';
 import { MongoClient } from 'mongodb';
 
-let server: tsmdb.TsmdbServer;
+let mongo: SmartMongo;
 let client: MongoClient;
 
 tap.test('setup', async () => {
-  server = new tsmdb.TsmdbServer({ port: 27117 });
-  await server.start();
-  client = new MongoClient('mongodb://127.0.0.1:27117');
+  mongo = await SmartMongo.createAndStart();
+  const { mongoDbUrl, mongoDbName } = await mongo.getMongoDescriptor();
+  client = new MongoClient(mongoDbUrl);
   await client.connect();
 });
 
-tap.test('should perform CRUD operations', async () => {
-  const db = client.db('test');
-  const col = db.collection('items');
+tap.test('should insert and query documents', async () => {
+  const col = client.db('test').collection('items');
+  await col.insertOne({ name: 'Widget', price: 9.99 });
 
-  // Create
-  const result = await col.insertOne({ name: 'Widget', price: 9.99 });
-  expect(result.insertedId).toBeTruthy();
-
-  // Read
   const item = await col.findOne({ name: 'Widget' });
   expect(item?.price).toEqual(9.99);
-
-  // Update
-  await col.updateOne({ name: 'Widget' }, { $set: { price: 12.99 } });
-  const updated = await col.findOne({ name: 'Widget' });
-  expect(updated?.price).toEqual(12.99);
-
-  // Delete
-  await col.deleteOne({ name: 'Widget' });
-  const deleted = await col.findOne({ name: 'Widget' });
-  expect(deleted).toBeNull();
 });
 
 tap.test('teardown', async () => {
   await client.close();
-  await server.stop();
+  await mongo.stop();
 });
 
 export default tap.start();
 ```
 
-## 🏗️ Architecture
+### With @push.rocks/smartdata
 
-### TsmDB Wire Protocol Stack
+```typescript
+import { SmartMongo } from '@push.rocks/smartmongo';
+import { SmartdataDb } from '@push.rocks/smartdata';
 
+const mongo = await SmartMongo.createAndStart();
+const descriptor = await mongo.getMongoDescriptor();
+
+const db = new SmartdataDb(descriptor);
+await db.init();
+
+// Use smartdata models against the memory server...
+
+await db.close();
+await mongo.stop();
 ```
-┌─────────────────────────────────────────────────────────────┐
-│                   Official MongoDB Driver                    │
-│                      (mongodb npm)                          │
-└─────────────────────────┬───────────────────────────────────┘
-                          │ TCP + OP_MSG/BSON
-                          ▼
-┌─────────────────────────────────────────────────────────────┐
-│                      TsmdbServer                            │
-│  ┌──────────────┐  ┌──────────────┐  ┌──────────────────┐  │
-│  │ WireProtocol │→ │CommandRouter │→ │     Handlers     │  │
-│  │  (OP_MSG)    │  │              │  │ (Find, Insert..) │  │
-│  └──────────────┘  └──────────────┘  └──────────────────┘  │
-└─────────────────────────┬───────────────────────────────────┘
-                          │
-                          ▼
-┌─────────────────────────────────────────────────────────────┐
-│                       Engines                               │
-│  ┌─────────┐ ┌────────┐ ┌───────────┐ ┌───────┐ ┌───────┐ │
-│  │ Query   │ │ Update │ │Aggregation│ │ Index │ │Session│ │
-│  │ Planner │ │ Engine │ │  Engine   │ │Engine │ │Engine │ │
-│  └─────────┘ └────────┘ └───────────┘ └───────┘ └───────┘ │
-│                   ┌──────────────────────┐                  │
-│                   │ Transaction Engine   │                  │
-│                   └──────────────────────┘                  │
-└─────────────────────────┬───────────────────────────────────┘
-                          │
-                          ▼
-┌─────────────────────────────────────────────────────────────┐
-│                   Storage Layer                              │
-│  ┌──────────────────┐  ┌──────────────────┐  ┌──────────┐  │
-│  │  MemoryStorage   │  │   FileStorage    │  │   WAL    │  │
-│  │                  │  │  (+ Checksums)   │  │          │  │
-│  └──────────────────┘  └──────────────────┘  └──────────┘  │
-└─────────────────────────────────────────────────────────────┘
-```
-
-### Key Components
-
-| Component | Description |
-|-----------|-------------|
-| **WireProtocol** | Parses MongoDB OP_MSG binary protocol |
-| **CommandRouter** | Routes commands to appropriate handlers |
-| **QueryPlanner** | Analyzes queries and selects execution strategy |
-| **IndexEngine** | Manages B-tree and hash indexes |
-| **SessionEngine** | Tracks client sessions and timeouts |
-| **TransactionEngine** | Handles ACID transaction semantics |
-| **WAL** | Write-ahead logging for durability |
 
 ## License and Legal Information
 

test/test.tsmdb.checksum.ts

@@ -1,232 +0,0 @@
-import { expect, tap } from '@git.zone/tstest/tapbundle';
-import * as smartmongo from '../ts/index.js';
-
-const {
-  calculateCRC32,
-  calculateCRC32Buffer,
-  calculateDocumentChecksum,
-  addChecksum,
-  verifyChecksum,
-  removeChecksum,
-} = smartmongo.tsmdb;
-
-// ============================================================================
-// CRC32 String Tests
-// ============================================================================
-
-tap.test('checksum: calculateCRC32 should return consistent value for same input', async () => {
-  const result1 = calculateCRC32('hello world');
-  const result2 = calculateCRC32('hello world');
-  expect(result1).toEqual(result2);
-});
-
-tap.test('checksum: calculateCRC32 should return different values for different inputs', async () => {
-  const result1 = calculateCRC32('hello');
-  const result2 = calculateCRC32('world');
-  expect(result1).not.toEqual(result2);
-});
-
-tap.test('checksum: calculateCRC32 should return a 32-bit unsigned integer', async () => {
-  const result = calculateCRC32('test string');
-  expect(result).toBeGreaterThanOrEqual(0);
-  expect(result).toBeLessThanOrEqual(0xFFFFFFFF);
-});
-
-tap.test('checksum: calculateCRC32 should handle empty string', async () => {
-  const result = calculateCRC32('');
-  expect(typeof result).toEqual('number');
-  expect(result).toBeGreaterThanOrEqual(0);
-});
-
-tap.test('checksum: calculateCRC32 should handle special characters', async () => {
-  const result = calculateCRC32('hello\nworld\t!"#$%&\'()');
-  expect(typeof result).toEqual('number');
-  expect(result).toBeGreaterThanOrEqual(0);
-});
-
-tap.test('checksum: calculateCRC32 should handle unicode characters', async () => {
-  const result = calculateCRC32('hello 世界 🌍');
-  expect(typeof result).toEqual('number');
-  expect(result).toBeGreaterThanOrEqual(0);
-});
-
-// ============================================================================
-// CRC32 Buffer Tests
-// ============================================================================
-
-tap.test('checksum: calculateCRC32Buffer should return consistent value for same input', async () => {
-  const buffer = Buffer.from('hello world');
-  const result1 = calculateCRC32Buffer(buffer);
-  const result2 = calculateCRC32Buffer(buffer);
-  expect(result1).toEqual(result2);
-});
-
-tap.test('checksum: calculateCRC32Buffer should return different values for different inputs', async () => {
-  const buffer1 = Buffer.from('hello');
-  const buffer2 = Buffer.from('world');
-  const result1 = calculateCRC32Buffer(buffer1);
-  const result2 = calculateCRC32Buffer(buffer2);
-  expect(result1).not.toEqual(result2);
-});
-
-tap.test('checksum: calculateCRC32Buffer should handle empty buffer', async () => {
-  const result = calculateCRC32Buffer(Buffer.from(''));
-  expect(typeof result).toEqual('number');
-  expect(result).toBeGreaterThanOrEqual(0);
-});
-
-tap.test('checksum: calculateCRC32Buffer should handle binary data', async () => {
-  const buffer = Buffer.from([0x00, 0xFF, 0x7F, 0x80, 0x01]);
-  const result = calculateCRC32Buffer(buffer);
-  expect(typeof result).toEqual('number');
-  expect(result).toBeGreaterThanOrEqual(0);
-});
-
-// ============================================================================
-// Document Checksum Tests
-// ============================================================================
-
-tap.test('checksum: calculateDocumentChecksum should return consistent value', async () => {
-  const doc = { name: 'John', age: 30 };
-  const result1 = calculateDocumentChecksum(doc);
-  const result2 = calculateDocumentChecksum(doc);
-  expect(result1).toEqual(result2);
-});
-
-tap.test('checksum: calculateDocumentChecksum should exclude _checksum field', async () => {
-  const doc1 = { name: 'John', age: 30 };
-  const doc2 = { name: 'John', age: 30, _checksum: 12345 };
-  const result1 = calculateDocumentChecksum(doc1);
-  const result2 = calculateDocumentChecksum(doc2);
-  expect(result1).toEqual(result2);
-});
-
-tap.test('checksum: calculateDocumentChecksum should handle empty document', async () => {
-  const result = calculateDocumentChecksum({});
-  expect(typeof result).toEqual('number');
-  expect(result).toBeGreaterThanOrEqual(0);
-});
-
-tap.test('checksum: calculateDocumentChecksum should handle nested objects', async () => {
-  const doc = {
-    name: 'John',
-    address: {
-      street: '123 Main St',
-      city: 'Springfield',
-      zip: {
-        code: '12345',
-        plus4: '6789',
-      },
-    },
-  };
-  const result = calculateDocumentChecksum(doc);
-  expect(typeof result).toEqual('number');
-  expect(result).toBeGreaterThanOrEqual(0);
-});
-
-tap.test('checksum: calculateDocumentChecksum should handle arrays', async () => {
-  const doc = {
-    name: 'John',
-    tags: ['developer', 'tester', 'admin'],
-    scores: [95, 87, 92],
-  };
-  const result = calculateDocumentChecksum(doc);
-  expect(typeof result).toEqual('number');
-  expect(result).toBeGreaterThanOrEqual(0);
-});
-
-// ============================================================================
-// Add/Verify/Remove Checksum Tests
-// ============================================================================
-
-tap.test('checksum: addChecksum should add _checksum field to document', async () => {
-  const doc = { name: 'John', age: 30 };
-  const docWithChecksum = addChecksum(doc);
-
-  expect('_checksum' in docWithChecksum).toBeTrue();
-  expect(typeof docWithChecksum._checksum).toEqual('number');
-  expect(docWithChecksum.name).toEqual('John');
-  expect(docWithChecksum.age).toEqual(30);
-});
-
-tap.test('checksum: addChecksum should not modify the original document', async () => {
-  const doc = { name: 'John', age: 30 };
-  addChecksum(doc);
-  expect('_checksum' in doc).toBeFalse();
-});
-
-tap.test('checksum: verifyChecksum should return true for valid checksum', async () => {
-  const doc = { name: 'John', age: 30 };
-  const docWithChecksum = addChecksum(doc);
-  const isValid = verifyChecksum(docWithChecksum);
-  expect(isValid).toBeTrue();
-});
-
-tap.test('checksum: verifyChecksum should return false for tampered document', async () => {
-  const doc = { name: 'John', age: 30 };
-  const docWithChecksum = addChecksum(doc);
-
-  // Tamper with the document
-  docWithChecksum.age = 31;
-
-  const isValid = verifyChecksum(docWithChecksum);
-  expect(isValid).toBeFalse();
-});
-
-tap.test('checksum: verifyChecksum should return false for wrong checksum', async () => {
-  const doc = { name: 'John', age: 30, _checksum: 12345 };
-  const isValid = verifyChecksum(doc);
-  expect(isValid).toBeFalse();
-});
-
-tap.test('checksum: verifyChecksum should return true for document without checksum', async () => {
-  const doc = { name: 'John', age: 30 };
-  const isValid = verifyChecksum(doc);
-  expect(isValid).toBeTrue();
-});
-
-tap.test('checksum: removeChecksum should remove _checksum field', async () => {
-  const doc = { name: 'John', age: 30 };
-  const docWithChecksum = addChecksum(doc);
-  const docWithoutChecksum = removeChecksum(docWithChecksum);
-
-  expect('_checksum' in docWithoutChecksum).toBeFalse();
-  expect(docWithoutChecksum.name).toEqual('John');
-  expect(docWithoutChecksum.age).toEqual(30);
-});
-
-tap.test('checksum: removeChecksum should handle document without checksum', async () => {
-  const doc = { name: 'John', age: 30 };
-  const result = removeChecksum(doc);
-
-  expect('_checksum' in result).toBeFalse();
-  expect(result.name).toEqual('John');
-  expect(result.age).toEqual(30);
-});
-
-// ============================================================================
-// Round-trip Tests
-// ============================================================================
-
-tap.test('checksum: full round-trip - add, verify, remove', async () => {
-  const original = { name: 'Test', value: 42, nested: { a: 1, b: 2 } };
-
-  // Add checksum
-  const withChecksum = addChecksum(original);
-  expect('_checksum' in withChecksum).toBeTrue();
-
-  // Verify checksum
-  expect(verifyChecksum(withChecksum)).toBeTrue();
-
-  // Remove checksum
-  const restored = removeChecksum(withChecksum);
-  expect('_checksum' in restored).toBeFalse();
-
-  // Original data should be intact
-  expect(restored.name).toEqual('Test');
-  expect(restored.value).toEqual(42);
-  expect(restored.nested.a).toEqual(1);
-  expect(restored.nested.b).toEqual(2);
-});
-
-export default tap.start();

test/test.tsmdb.indexengine.ts

@@ -1,417 +0,0 @@
-import { expect, tap } from '@git.zone/tstest/tapbundle';
-import * as smartmongo from '../ts/index.js';
-
-const { IndexEngine, MemoryStorageAdapter, ObjectId } = smartmongo.tsmdb;
-
-let storage: InstanceType<typeof MemoryStorageAdapter>;
-let indexEngine: InstanceType<typeof IndexEngine>;
-
-const TEST_DB = 'testdb';
-const TEST_COLL = 'indextest';
-
-// ============================================================================
-// Setup
-// ============================================================================
-
-tap.test('indexengine: should create IndexEngine instance', async () => {
-  storage = new MemoryStorageAdapter();
-  await storage.initialize();
-  await storage.createCollection(TEST_DB, TEST_COLL);
-
-  indexEngine = new IndexEngine(TEST_DB, TEST_COLL, storage);
-  expect(indexEngine).toBeTruthy();
-});
-
-// ============================================================================
-// Index Creation Tests
-// ============================================================================
-
-tap.test('indexengine: createIndex should create single-field index', async () => {
-  const indexName = await indexEngine.createIndex({ name: 1 });
-
-  expect(indexName).toEqual('name_1');
-
-  const exists = await indexEngine.indexExists('name_1');
-  expect(exists).toBeTrue();
-});
-
-tap.test('indexengine: createIndex should create compound index', async () => {
-  const indexName = await indexEngine.createIndex({ city: 1, state: -1 });
-
-  expect(indexName).toEqual('city_1_state_-1');
-
-  const exists = await indexEngine.indexExists('city_1_state_-1');
-  expect(exists).toBeTrue();
-});
-
-tap.test('indexengine: createIndex should use custom name if provided', async () => {
-  const indexName = await indexEngine.createIndex({ email: 1 }, { name: 'custom_email_index' });
-
-  expect(indexName).toEqual('custom_email_index');
-
-  const exists = await indexEngine.indexExists('custom_email_index');
-  expect(exists).toBeTrue();
-});
-
-tap.test('indexengine: createIndex should handle unique option', async () => {
-  const indexName = await indexEngine.createIndex({ uniqueField: 1 }, { unique: true });
-
-  expect(indexName).toEqual('uniqueField_1');
-
-  const indexes = await indexEngine.listIndexes();
-  const uniqueIndex = indexes.find(i => i.name === 'uniqueField_1');
-  expect(uniqueIndex!.unique).toBeTrue();
-});
-
-tap.test('indexengine: createIndex should handle sparse option', async () => {
-  const indexName = await indexEngine.createIndex({ sparseField: 1 }, { sparse: true });
-
-  expect(indexName).toEqual('sparseField_1');
-
-  const indexes = await indexEngine.listIndexes();
-  const sparseIndex = indexes.find(i => i.name === 'sparseField_1');
-  expect(sparseIndex!.sparse).toBeTrue();
-});
-
-tap.test('indexengine: createIndex should return existing index name if already exists', async () => {
-  const indexName1 = await indexEngine.createIndex({ existingField: 1 }, { name: 'existing_idx' });
-  const indexName2 = await indexEngine.createIndex({ existingField: 1 }, { name: 'existing_idx' });
-
-  expect(indexName1).toEqual(indexName2);
-});
-
-// ============================================================================
-// Index Listing and Existence Tests
-// ============================================================================
-
-tap.test('indexengine: listIndexes should return all indexes', async () => {
-  const indexes = await indexEngine.listIndexes();
-
-  expect(indexes.length).toBeGreaterThanOrEqual(5); // _id_ + created indexes
-  expect(indexes.some(i => i.name === '_id_')).toBeTrue();
-  expect(indexes.some(i => i.name === 'name_1')).toBeTrue();
-});
-
-tap.test('indexengine: indexExists should return true for existing index', async () => {
-  const exists = await indexEngine.indexExists('name_1');
-  expect(exists).toBeTrue();
-});
-
-tap.test('indexengine: indexExists should return false for non-existent index', async () => {
-  const exists = await indexEngine.indexExists('nonexistent_index');
-  expect(exists).toBeFalse();
-});
-
-// ============================================================================
-// Document Operations and Index Updates
-// ============================================================================
-
-tap.test('indexengine: should insert documents for index testing', async () => {
-  // Create a fresh index engine for document operations
-  await storage.dropCollection(TEST_DB, TEST_COLL);
-  await storage.createCollection(TEST_DB, TEST_COLL);
-
-  indexEngine = new IndexEngine(TEST_DB, TEST_COLL, storage);
-
-  // Create indexes first
-  await indexEngine.createIndex({ age: 1 });
-  await indexEngine.createIndex({ category: 1 });
-
-  // Insert test documents
-  const docs = [
-    { _id: new ObjectId(), name: 'Alice', age: 25, category: 'A' },
-    { _id: new ObjectId(), name: 'Bob', age: 30, category: 'B' },
-    { _id: new ObjectId(), name: 'Charlie', age: 35, category: 'A' },
-    { _id: new ObjectId(), name: 'Diana', age: 28, category: 'C' },
-    { _id: new ObjectId(), name: 'Eve', age: 30, category: 'B' },
-  ];
-
-  for (const doc of docs) {
-    const stored = await storage.insertOne(TEST_DB, TEST_COLL, doc);
-    await indexEngine.onInsert(stored);
-  }
-});
-
-tap.test('indexengine: onInsert should update indexes', async () => {
-  const newDoc = {
-    _id: new ObjectId(),
-    name: 'Frank',
-    age: 40,
-    category: 'D',
-  };
-
-  const stored = await storage.insertOne(TEST_DB, TEST_COLL, newDoc);
-  await indexEngine.onInsert(stored);
-
-  // Find by the indexed field
-  const candidates = await indexEngine.findCandidateIds({ age: 40 });
-  expect(candidates).toBeTruthy();
-  expect(candidates!.size).toEqual(1);
-});
-
-tap.test('indexengine: onUpdate should update indexes correctly', async () => {
-  // Get an existing document
-  const docs = await storage.findAll(TEST_DB, TEST_COLL);
-  const oldDoc = docs.find(d => d.name === 'Alice')!;
-
-  // Update the document
-  const newDoc = { ...oldDoc, age: 26 };
-  await storage.updateById(TEST_DB, TEST_COLL, oldDoc._id, newDoc);
-  await indexEngine.onUpdate(oldDoc, newDoc);
-
-  // Old value should not be in index
-  const oldCandidates = await indexEngine.findCandidateIds({ age: 25 });
-  expect(oldCandidates).toBeTruthy();
-  expect(oldCandidates!.has(oldDoc._id.toHexString())).toBeFalse();
-
-  // New value should be in index
-  const newCandidates = await indexEngine.findCandidateIds({ age: 26 });
-  expect(newCandidates).toBeTruthy();
-  expect(newCandidates!.has(oldDoc._id.toHexString())).toBeTrue();
-});
-
-tap.test('indexengine: onDelete should remove from indexes', async () => {
-  const docs = await storage.findAll(TEST_DB, TEST_COLL);
-  const docToDelete = docs.find(d => d.name === 'Frank')!;
-
-  await storage.deleteById(TEST_DB, TEST_COLL, docToDelete._id);
-  await indexEngine.onDelete(docToDelete);
-
-  const candidates = await indexEngine.findCandidateIds({ age: 40 });
-  expect(candidates).toBeTruthy();
-  expect(candidates!.has(docToDelete._id.toHexString())).toBeFalse();
-});
-
-// ============================================================================
-// findCandidateIds Tests
-// ============================================================================
-
-tap.test('indexengine: findCandidateIds with equality filter', async () => {
-  const candidates = await indexEngine.findCandidateIds({ age: 30 });
-
-  expect(candidates).toBeTruthy();
-  expect(candidates!.size).toEqual(2); // Bob and Eve both have age 30
-});
-
-tap.test('indexengine: findCandidateIds with $in filter', async () => {
-  const candidates = await indexEngine.findCandidateIds({ age: { $in: [28, 30] } });
-
-  expect(candidates).toBeTruthy();
-  expect(candidates!.size).toEqual(3); // Diana (28), Bob (30), Eve (30)
-});
-
-tap.test('indexengine: findCandidateIds with no matching index', async () => {
-  const candidates = await indexEngine.findCandidateIds({ nonIndexedField: 'value' });
-
-  // Should return null when no index can be used
-  expect(candidates).toBeNull();
-});
-
-tap.test('indexengine: findCandidateIds with empty filter', async () => {
-  const candidates = await indexEngine.findCandidateIds({});
-
-  // Empty filter = no index can be used
-  expect(candidates).toBeNull();
-});
-
-// ============================================================================
-// Range Query Tests (B-Tree)
-// ============================================================================
-
-tap.test('indexengine: findCandidateIds with $gt', async () => {
-  const candidates = await indexEngine.findCandidateIds({ age: { $gt: 30 } });
-
-  expect(candidates).toBeTruthy();
-  // Charlie (35) is > 30
-  expect(candidates!.size).toBeGreaterThanOrEqual(1);
-});
-
-tap.test('indexengine: findCandidateIds with $lt', async () => {
-  const candidates = await indexEngine.findCandidateIds({ age: { $lt: 28 } });
-
-  expect(candidates).toBeTruthy();
-  // Alice (26) is < 28
-  expect(candidates!.size).toBeGreaterThanOrEqual(1);
-});
-
-tap.test('indexengine: findCandidateIds with $gte', async () => {
-  const candidates = await indexEngine.findCandidateIds({ age: { $gte: 30 } });
-
-  expect(candidates).toBeTruthy();
-  // Bob (30), Eve (30), Charlie (35)
-  expect(candidates!.size).toBeGreaterThanOrEqual(3);
-});
-
-tap.test('indexengine: findCandidateIds with $lte', async () => {
-  const candidates = await indexEngine.findCandidateIds({ age: { $lte: 28 } });
-
-  expect(candidates).toBeTruthy();
-  // Alice (26), Diana (28)
-  expect(candidates!.size).toBeGreaterThanOrEqual(2);
-});
-
-tap.test('indexengine: findCandidateIds with range $gt and $lt', async () => {
-  const candidates = await indexEngine.findCandidateIds({ age: { $gt: 26, $lt: 35 } });
-
-  expect(candidates).toBeTruthy();
-  // Diana (28), Bob (30), Eve (30) are between 26 and 35 exclusive
-  expect(candidates!.size).toBeGreaterThanOrEqual(3);
-});
-
-// ============================================================================
-// Index Selection Tests
-// ============================================================================
-
-tap.test('indexengine: selectIndex should return best index for equality', async () => {
-  const result = indexEngine.selectIndex({ age: 30 });
-
-  expect(result).toBeTruthy();
-  expect(result!.name).toEqual('age_1');
-});
-
-tap.test('indexengine: selectIndex should return best index for range query', async () => {
-  const result = indexEngine.selectIndex({ age: { $gt: 25 } });
-
-  expect(result).toBeTruthy();
-  expect(result!.name).toEqual('age_1');
-});
-
-tap.test('indexengine: selectIndex should return null for no matching filter', async () => {
-  const result = indexEngine.selectIndex({ nonIndexedField: 'value' });
-
-  expect(result).toBeNull();
-});
-
-tap.test('indexengine: selectIndex should return null for empty filter', async () => {
-  const result = indexEngine.selectIndex({});
-
-  expect(result).toBeNull();
-});
-
-tap.test('indexengine: selectIndex should prefer more specific indexes', async () => {
-  // Create a compound index
-  await indexEngine.createIndex({ age: 1, category: 1 }, { name: 'age_category_compound' });
-
-  // Query that matches compound index
-  const result = indexEngine.selectIndex({ age: 30, category: 'B' });
-
-  expect(result).toBeTruthy();
-  // Should prefer the compound index since it covers more fields
-  expect(result!.name).toEqual('age_category_compound');
-});
-
-// ============================================================================
-// Drop Index Tests
-// ============================================================================
-
-tap.test('indexengine: dropIndex should remove the index', async () => {
-  await indexEngine.createIndex({ dropTest: 1 }, { name: 'drop_test_idx' });
-  expect(await indexEngine.indexExists('drop_test_idx')).toBeTrue();
-
-  await indexEngine.dropIndex('drop_test_idx');
-  expect(await indexEngine.indexExists('drop_test_idx')).toBeFalse();
-});
-
-tap.test('indexengine: dropIndex should throw for _id index', async () => {
-  let threw = false;
-  try {
-    await indexEngine.dropIndex('_id_');
-  } catch (e) {
-    threw = true;
-  }
-  expect(threw).toBeTrue();
-});
-
-tap.test('indexengine: dropIndex should throw for non-existent index', async () => {
-  let threw = false;
-  try {
-    await indexEngine.dropIndex('nonexistent_index');
-  } catch (e) {
-    threw = true;
-  }
-  expect(threw).toBeTrue();
-});
-
-tap.test('indexengine: dropAllIndexes should remove all indexes except _id', async () => {
-  // Create some indexes to drop
-  await indexEngine.createIndex({ toDrop1: 1 });
-  await indexEngine.createIndex({ toDrop2: 1 });
-
-  await indexEngine.dropAllIndexes();
-
-  const indexes = await indexEngine.listIndexes();
-  expect(indexes.length).toEqual(1);
-  expect(indexes[0].name).toEqual('_id_');
-});
-
-// ============================================================================
-// Unique Index Constraint Tests
-// ============================================================================
-
-tap.test('indexengine: unique index should prevent duplicate inserts', async () => {
-  // Create fresh collection
-  await storage.dropCollection(TEST_DB, 'uniquetest');
-  await storage.createCollection(TEST_DB, 'uniquetest');
-
-  const uniqueIndexEngine = new IndexEngine(TEST_DB, 'uniquetest', storage);
-  await uniqueIndexEngine.createIndex({ email: 1 }, { unique: true });
-
-  // Insert first document
-  const doc1 = { _id: new ObjectId(), email: 'test@example.com', name: 'Test' };
-  const stored1 = await storage.insertOne(TEST_DB, 'uniquetest', doc1);
-  await uniqueIndexEngine.onInsert(stored1);
-
-  // Try to insert duplicate
-  const doc2 = { _id: new ObjectId(), email: 'test@example.com', name: 'Test2' };
-  const stored2 = await storage.insertOne(TEST_DB, 'uniquetest', doc2);
-
-  let threw = false;
-  try {
-    await uniqueIndexEngine.onInsert(stored2);
-  } catch (e: any) {
-    threw = true;
-    expect(e.message).toContain('duplicate key');
-  }
-
-  expect(threw).toBeTrue();
-});
-
-// ============================================================================
-// Sparse Index Tests
-// ============================================================================
-
-tap.test('indexengine: sparse index should not include documents without the field', async () => {
-  // Create fresh collection
-  await storage.dropCollection(TEST_DB, 'sparsetest');
-  await storage.createCollection(TEST_DB, 'sparsetest');
-
-  const sparseIndexEngine = new IndexEngine(TEST_DB, 'sparsetest', storage);
-  await sparseIndexEngine.createIndex({ optionalField: 1 }, { sparse: true });
-
-  // Insert doc with the field
-  const doc1 = { _id: new ObjectId(), optionalField: 'hasValue', name: 'HasField' };
-  const stored1 = await storage.insertOne(TEST_DB, 'sparsetest', doc1);
-  await sparseIndexEngine.onInsert(stored1);
-
-  // Insert doc without the field
-  const doc2 = { _id: new ObjectId(), name: 'NoField' };
-  const stored2 = await storage.insertOne(TEST_DB, 'sparsetest', doc2);
-  await sparseIndexEngine.onInsert(stored2);
-
-  // Search for documents with the field
-  const candidates = await sparseIndexEngine.findCandidateIds({ optionalField: 'hasValue' });
-  expect(candidates).toBeTruthy();
-  expect(candidates!.size).toEqual(1);
-  expect(candidates!.has(stored1._id.toHexString())).toBeTrue();
-});
-
-// ============================================================================
-// Cleanup
-// ============================================================================
-
-tap.test('indexengine: cleanup', async () => {
-  await storage.close();
-  expect(true).toBeTrue();
-});
-
-export default tap.start();

test/test.tsmdb.queryplanner.ts

@@ -1,273 +0,0 @@
-import { expect, tap } from '@git.zone/tstest/tapbundle';
-import * as smartmongo from '../ts/index.js';
-
-const { QueryPlanner, IndexEngine, MemoryStorageAdapter, ObjectId } = smartmongo.tsmdb;
-
-let storage: InstanceType<typeof MemoryStorageAdapter>;
-let indexEngine: InstanceType<typeof IndexEngine>;
-let queryPlanner: InstanceType<typeof QueryPlanner>;
-
-const TEST_DB = 'testdb';
-const TEST_COLL = 'testcoll';
-
-// ============================================================================
-// Setup
-// ============================================================================
-
-tap.test('queryplanner: should create QueryPlanner instance', async () => {
-  storage = new MemoryStorageAdapter();
-  await storage.initialize();
-  await storage.createCollection(TEST_DB, TEST_COLL);
-
-  indexEngine = new IndexEngine(TEST_DB, TEST_COLL, storage);
-  queryPlanner = new QueryPlanner(indexEngine);
-
-  expect(queryPlanner).toBeTruthy();
-});
-
-tap.test('queryplanner: should insert test documents', async () => {
-  // Insert test documents
-  const docs = [
-    { _id: new ObjectId(), name: 'Alice', age: 25, city: 'NYC', category: 'A' },
-    { _id: new ObjectId(), name: 'Bob', age: 30, city: 'LA', category: 'B' },
-    { _id: new ObjectId(), name: 'Charlie', age: 35, city: 'NYC', category: 'A' },
-    { _id: new ObjectId(), name: 'Diana', age: 28, city: 'Chicago', category: 'C' },
-    { _id: new ObjectId(), name: 'Eve', age: 32, city: 'LA', category: 'B' },
-  ];
-
-  for (const doc of docs) {
-    await storage.insertOne(TEST_DB, TEST_COLL, doc);
-  }
-});
-
-// ============================================================================
-// Basic Plan Tests
-// ============================================================================
-
-tap.test('queryplanner: empty filter should result in COLLSCAN', async () => {
-  const plan = await queryPlanner.plan({});
-
-  expect(plan.type).toEqual('COLLSCAN');
-  expect(plan.indexCovering).toBeFalse();
-  expect(plan.selectivity).toEqual(1.0);
-  expect(plan.explanation).toContain('No filter');
-});
-
-tap.test('queryplanner: null filter should result in COLLSCAN', async () => {
-  const plan = await queryPlanner.plan(null as any);
-
-  expect(plan.type).toEqual('COLLSCAN');
-});
-
-tap.test('queryplanner: filter with no matching index should result in COLLSCAN', async () => {
-  const plan = await queryPlanner.plan({ nonExistentField: 'value' });
-
-  expect(plan.type).toEqual('COLLSCAN');
-  expect(plan.explanation).toContain('No suitable index');
-});
-
-// ============================================================================
-// Index Scan Tests (with indexes)
-// ============================================================================
-
-tap.test('queryplanner: should create test indexes', async () => {
-  await indexEngine.createIndex({ age: 1 }, { name: 'age_1' });
-  await indexEngine.createIndex({ name: 1 }, { name: 'name_1' });
-  await indexEngine.createIndex({ city: 1, category: 1 }, { name: 'city_category_1' });
-
-  const indexes = await indexEngine.listIndexes();
-  expect(indexes.length).toBeGreaterThanOrEqual(4); // _id_ + 3 created
-});
-
-tap.test('queryplanner: simple equality filter should use IXSCAN', async () => {
-  const plan = await queryPlanner.plan({ age: 30 });
-
-  expect(plan.type).toEqual('IXSCAN');
-  expect(plan.indexName).toEqual('age_1');
-  expect(plan.indexFieldsUsed).toContain('age');
-  expect(plan.usesRange).toBeFalse();
-});
-
-tap.test('queryplanner: $eq operator should use IXSCAN', async () => {
-  const plan = await queryPlanner.plan({ name: { $eq: 'Alice' } });
-
-  expect(plan.type).toEqual('IXSCAN');
-  expect(plan.indexName).toEqual('name_1');
-  expect(plan.indexFieldsUsed).toContain('name');
-});
-
-tap.test('queryplanner: range filter ($gt) should use IXSCAN_RANGE', async () => {
-  const plan = await queryPlanner.plan({ age: { $gt: 25 } });
-
-  expect(plan.type).toEqual('IXSCAN_RANGE');
-  expect(plan.indexName).toEqual('age_1');
-  expect(plan.usesRange).toBeTrue();
-});
-
-tap.test('queryplanner: range filter ($lt) should use IXSCAN_RANGE', async () => {
-  const plan = await queryPlanner.plan({ age: { $lt: 35 } });
-
-  expect(plan.type).toEqual('IXSCAN_RANGE');
-  expect(plan.usesRange).toBeTrue();
-});
-
-tap.test('queryplanner: range filter ($gte, $lte) should use IXSCAN_RANGE', async () => {
-  const plan = await queryPlanner.plan({ age: { $gte: 25, $lte: 35 } });
-
-  expect(plan.type).toEqual('IXSCAN_RANGE');
-  expect(plan.usesRange).toBeTrue();
-});
-
-tap.test('queryplanner: $in operator should use IXSCAN', async () => {
-  const plan = await queryPlanner.plan({ age: { $in: [25, 30, 35] } });
-
-  expect(plan.type).toEqual('IXSCAN');
-  expect(plan.indexName).toEqual('age_1');
-});
-
-// ============================================================================
-// Compound Index Tests
-// ============================================================================
-
-tap.test('queryplanner: compound index - first field equality should use index', async () => {
-  const plan = await queryPlanner.plan({ city: 'NYC' });
-
-  expect(plan.type).toEqual('IXSCAN');
-  expect(plan.indexName).toEqual('city_category_1');
-  expect(plan.indexFieldsUsed).toContain('city');
-});
-
-tap.test('queryplanner: compound index - both fields should use full index', async () => {
-  const plan = await queryPlanner.plan({ city: 'NYC', category: 'A' });
-
-  expect(plan.type).toEqual('IXSCAN');
-  expect(plan.indexName).toEqual('city_category_1');
-  expect(plan.indexFieldsUsed).toContain('city');
-  expect(plan.indexFieldsUsed).toContain('category');
-  expect(plan.indexFieldsUsed.length).toEqual(2);
-});
-
-// ============================================================================
-// Selectivity Tests
-// ============================================================================
-
-tap.test('queryplanner: equality query should have low selectivity', async () => {
-  const plan = await queryPlanner.plan({ age: 30 });
-
-  expect(plan.selectivity).toBeLessThan(0.1);
-});
-
-tap.test('queryplanner: range query should have moderate selectivity', async () => {
-  const plan = await queryPlanner.plan({ age: { $gt: 25 } });
-
-  expect(plan.selectivity).toBeGreaterThan(0);
-  expect(plan.selectivity).toBeLessThan(1);
-});
-
-tap.test('queryplanner: $in query selectivity depends on array size', async () => {
-  const smallInPlan = await queryPlanner.plan({ age: { $in: [25] } });
-  const largeInPlan = await queryPlanner.plan({ age: { $in: [25, 26, 27, 28, 29, 30] } });
-
-  // Larger $in should have higher selectivity (less selective = more documents)
-  expect(largeInPlan.selectivity).toBeGreaterThanOrEqual(smallInPlan.selectivity);
-});
-
-// ============================================================================
-// Index Covering Tests
-// ============================================================================
-
-tap.test('queryplanner: query covering all filter fields should be index covering', async () => {
-  const plan = await queryPlanner.plan({ age: 30 });
-
-  // All filter fields are covered by the index
-  expect(plan.indexCovering).toBeTrue();
-});
-
-tap.test('queryplanner: query with residual filter should not be index covering', async () => {
-  const plan = await queryPlanner.plan({ city: 'NYC', name: 'Alice' });
-
-  // 'name' is not in the compound index city_category, so it's residual
-  expect(plan.indexCovering).toBeFalse();
-  expect(plan.residualFilter).toBeTruthy();
-});
-
-// ============================================================================
-// Explain Tests
-// ============================================================================
-
-tap.test('queryplanner: explain should return detailed plan info', async () => {
-  const explanation = await queryPlanner.explain({ age: 30 });
-
-  expect(explanation.queryPlanner).toBeTruthy();
-  expect(explanation.queryPlanner.plannerVersion).toEqual(1);
-  expect(explanation.queryPlanner.winningPlan).toBeTruthy();
-  expect(explanation.queryPlanner.rejectedPlans).toBeArray();
-});
-
-tap.test('queryplanner: explain should include winning and rejected plans', async () => {
-  const explanation = await queryPlanner.explain({ age: 30 });
-
-  expect(explanation.queryPlanner.winningPlan.type).toBeTruthy();
-  expect(explanation.queryPlanner.rejectedPlans.length).toBeGreaterThan(0);
-});
-
-tap.test('queryplanner: explain winning plan should be the best plan', async () => {
-  const explanation = await queryPlanner.explain({ age: 30 });
-
-  // Winning plan should use an index, not collection scan (if index exists)
-  expect(explanation.queryPlanner.winningPlan.type).toEqual('IXSCAN');
-
-  // There should be a COLLSCAN in rejected plans
-  const hasCOLLSCAN = explanation.queryPlanner.rejectedPlans.some(p => p.type === 'COLLSCAN');
-  expect(hasCOLLSCAN).toBeTrue();
-});
-
-// ============================================================================
-// $and Operator Tests
-// ============================================================================
-
-tap.test('queryplanner: $and conditions should be analyzed', async () => {
-  const plan = await queryPlanner.plan({
-    $and: [
-      { age: { $gte: 25 } },
-      { age: { $lte: 35 } },
-    ],
-  });
-
-  expect(plan.type).toEqual('IXSCAN_RANGE');
-  expect(plan.indexName).toEqual('age_1');
-});
-
-// ============================================================================
-// Edge Cases
-// ============================================================================
-
-tap.test('queryplanner: should handle complex nested operators', async () => {
-  const plan = await queryPlanner.plan({
-    age: { $gte: 20, $lte: 40 },
-    city: 'NYC',
-  });
-
-  expect(plan).toBeTruthy();
-  expect(plan.type).not.toBeUndefined();
-});
-
-tap.test('queryplanner: should handle $exists operator', async () => {
-  await indexEngine.createIndex({ email: 1 }, { name: 'email_1', sparse: true });
-
-  const plan = await queryPlanner.plan({ email: { $exists: true } });
-
-  // $exists can use sparse indexes
-  expect(plan).toBeTruthy();
-});
-
-// ============================================================================
-// Cleanup
-// ============================================================================
-
-tap.test('queryplanner: cleanup', async () => {
-  await storage.close();
-  expect(true).toBeTrue();
-});
-
-export default tap.start();

test/test.tsmdb.session.ts

@@ -1,361 +0,0 @@
-import { expect, tap } from '@git.zone/tstest/tapbundle';
-import * as smartmongo from '../ts/index.js';
-
-const { SessionEngine } = smartmongo.tsmdb;
-
-let sessionEngine: InstanceType<typeof SessionEngine>;
-
-// ============================================================================
-// Setup
-// ============================================================================
-
-tap.test('session: should create SessionEngine instance', async () => {
-  sessionEngine = new SessionEngine({
-    sessionTimeoutMs: 1000, // 1 second for testing
-    cleanupIntervalMs: 10000, // 10 seconds to avoid cleanup during tests
-  });
-  expect(sessionEngine).toBeTruthy();
-});
-
-// ============================================================================
-// Session Lifecycle Tests
-// ============================================================================
-
-tap.test('session: startSession should create session with auto-generated ID', async () => {
-  const session = sessionEngine.startSession();
-
-  expect(session).toBeTruthy();
-  expect(session.id).toBeTruthy();
-  expect(session.id.length).toBeGreaterThanOrEqual(32); // UUID hex string (32 or 36 with hyphens)
-  expect(session.createdAt).toBeGreaterThan(0);
-  expect(session.lastActivityAt).toBeGreaterThan(0);
-  expect(session.inTransaction).toBeFalse();
-});
-
-tap.test('session: startSession should create session with specified ID', async () => {
-  const customId = 'custom-session-id-12345';
-  const session = sessionEngine.startSession(customId);
-
-  expect(session.id).toEqual(customId);
-});
-
-tap.test('session: startSession should create session with metadata', async () => {
-  const metadata = { client: 'test-client', version: '1.0' };
-  const session = sessionEngine.startSession(undefined, metadata);
-
-  expect(session.metadata).toBeTruthy();
-  expect(session.metadata!.client).toEqual('test-client');
-  expect(session.metadata!.version).toEqual('1.0');
-});
-
-tap.test('session: getSession should return session by ID', async () => {
-  const created = sessionEngine.startSession('get-session-test');
-  const retrieved = sessionEngine.getSession('get-session-test');
-
-  expect(retrieved).toBeTruthy();
-  expect(retrieved!.id).toEqual('get-session-test');
-  expect(retrieved!.id).toEqual(created.id);
-});
-
-tap.test('session: getSession should return undefined for non-existent session', async () => {
-  const session = sessionEngine.getSession('non-existent-session-id');
-  expect(session).toBeUndefined();
-});
-
-tap.test('session: touchSession should update lastActivityAt', async () => {
-  const session = sessionEngine.startSession('touch-test-session');
-  const originalLastActivity = session.lastActivityAt;
-
-  // Wait a bit to ensure time difference
-  await new Promise(resolve => setTimeout(resolve, 10));
-
-  const touched = sessionEngine.touchSession('touch-test-session');
-  expect(touched).toBeTrue();
-
-  const updated = sessionEngine.getSession('touch-test-session');
-  expect(updated!.lastActivityAt).toBeGreaterThanOrEqual(originalLastActivity);
-});
-
-tap.test('session: touchSession should return false for non-existent session', async () => {
-  const touched = sessionEngine.touchSession('non-existent-touch-session');
-  expect(touched).toBeFalse();
-});
-
-tap.test('session: endSession should remove the session', async () => {
-  sessionEngine.startSession('end-session-test');
-  expect(sessionEngine.getSession('end-session-test')).toBeTruthy();
-
-  const ended = await sessionEngine.endSession('end-session-test');
-  expect(ended).toBeTrue();
-
-  expect(sessionEngine.getSession('end-session-test')).toBeUndefined();
-});
-
-tap.test('session: endSession should return false for non-existent session', async () => {
-  const ended = await sessionEngine.endSession('non-existent-end-session');
-  expect(ended).toBeFalse();
-});
-
-// ============================================================================
-// Session Expiry Tests
-// ============================================================================
-
-tap.test('session: isSessionExpired should return false for fresh session', async () => {
-  const session = sessionEngine.startSession('fresh-session');
-  const isExpired = sessionEngine.isSessionExpired(session);
-  expect(isExpired).toBeFalse();
-});
-
-tap.test('session: isSessionExpired should return true for old session', async () => {
-  // Create a session with old lastActivityAt
-  const session = sessionEngine.startSession('old-session');
-  // Manually set lastActivityAt to old value (sessionTimeoutMs is 1000ms)
-  (session as any).lastActivityAt = Date.now() - 2000;
-
-  const isExpired = sessionEngine.isSessionExpired(session);
-  expect(isExpired).toBeTrue();
-});
-
-tap.test('session: getSession should return undefined for expired session', async () => {
-  const session = sessionEngine.startSession('expiring-session');
-  // Manually expire the session
-  (session as any).lastActivityAt = Date.now() - 2000;
-
-  const retrieved = sessionEngine.getSession('expiring-session');
-  expect(retrieved).toBeUndefined();
-});
-
-// ============================================================================
-// Transaction Integration Tests
-// ============================================================================
-
-tap.test('session: startTransaction should mark session as in transaction', async () => {
-  sessionEngine.startSession('txn-session-1');
-  const started = sessionEngine.startTransaction('txn-session-1', 'txn-id-1', 1);
-
-  expect(started).toBeTrue();
-
-  const session = sessionEngine.getSession('txn-session-1');
-  expect(session!.inTransaction).toBeTrue();
-  expect(session!.txnId).toEqual('txn-id-1');
-  expect(session!.txnNumber).toEqual(1);
-});
-
-tap.test('session: startTransaction should return false for non-existent session', async () => {
-  const started = sessionEngine.startTransaction('non-existent-txn-session', 'txn-id');
-  expect(started).toBeFalse();
-});
-
-tap.test('session: endTransaction should clear transaction state', async () => {
-  sessionEngine.startSession('txn-session-2');
-  sessionEngine.startTransaction('txn-session-2', 'txn-id-2');
-
-  const ended = sessionEngine.endTransaction('txn-session-2');
-  expect(ended).toBeTrue();
-
-  const session = sessionEngine.getSession('txn-session-2');
-  expect(session!.inTransaction).toBeFalse();
-  expect(session!.txnId).toBeUndefined();
-  expect(session!.txnNumber).toBeUndefined();
-});
-
-tap.test('session: endTransaction should return false for non-existent session', async () => {
-  const ended = sessionEngine.endTransaction('non-existent-end-txn-session');
-  expect(ended).toBeFalse();
-});
-
-tap.test('session: getTransactionId should return transaction ID', async () => {
-  sessionEngine.startSession('txn-id-session');
-  sessionEngine.startTransaction('txn-id-session', 'my-txn-id');
-
-  const txnId = sessionEngine.getTransactionId('txn-id-session');
-  expect(txnId).toEqual('my-txn-id');
-});
-
-tap.test('session: getTransactionId should return undefined for session without transaction', async () => {
-  sessionEngine.startSession('no-txn-session');
-  const txnId = sessionEngine.getTransactionId('no-txn-session');
-  expect(txnId).toBeUndefined();
-});
-
-tap.test('session: getTransactionId should return undefined for non-existent session', async () => {
-  const txnId = sessionEngine.getTransactionId('non-existent-txn-id-session');
-  expect(txnId).toBeUndefined();
-});
-
-tap.test('session: isInTransaction should return correct state', async () => {
-  sessionEngine.startSession('in-txn-check-session');
-
-  expect(sessionEngine.isInTransaction('in-txn-check-session')).toBeFalse();
-
-  sessionEngine.startTransaction('in-txn-check-session', 'txn-check');
-  expect(sessionEngine.isInTransaction('in-txn-check-session')).toBeTrue();
-
-  sessionEngine.endTransaction('in-txn-check-session');
-  expect(sessionEngine.isInTransaction('in-txn-check-session')).toBeFalse();
-});
-
-tap.test('session: isInTransaction should return false for non-existent session', async () => {
-  expect(sessionEngine.isInTransaction('non-existent-in-txn-session')).toBeFalse();
-});
-
-// ============================================================================
-// Session Listing Tests
-// ============================================================================
-
-tap.test('session: listSessions should return all active sessions', async () => {
-  // Close and recreate to have a clean slate
-  sessionEngine.close();
-  sessionEngine = new SessionEngine({
-    sessionTimeoutMs: 10000,
-    cleanupIntervalMs: 60000,
-  });
-
-  sessionEngine.startSession('list-session-1');
-  sessionEngine.startSession('list-session-2');
-  sessionEngine.startSession('list-session-3');
-
-  const sessions = sessionEngine.listSessions();
-  expect(sessions.length).toEqual(3);
-});
-
-tap.test('session: listSessions should not include expired sessions', async () => {
-  const session = sessionEngine.startSession('expired-list-session');
-  // Expire the session
-  (session as any).lastActivityAt = Date.now() - 20000;
-
-  const sessions = sessionEngine.listSessions();
-  const found = sessions.find(s => s.id === 'expired-list-session');
-  expect(found).toBeUndefined();
-});
-
-tap.test('session: getSessionCount should return correct count', async () => {
-  const count = sessionEngine.getSessionCount();
-  expect(count).toBeGreaterThanOrEqual(3); // We created 3 sessions above
-});
-
-tap.test('session: getSessionsWithTransactions should filter correctly', async () => {
-  // Clean slate
-  sessionEngine.close();
-  sessionEngine = new SessionEngine({
-    sessionTimeoutMs: 10000,
-    cleanupIntervalMs: 60000,
-  });
-
-  sessionEngine.startSession('no-txn-1');
-  sessionEngine.startSession('no-txn-2');
-  sessionEngine.startSession('with-txn-1');
-  sessionEngine.startSession('with-txn-2');
-
-  sessionEngine.startTransaction('with-txn-1', 'txn-a');
-  sessionEngine.startTransaction('with-txn-2', 'txn-b');
-
-  const txnSessions = sessionEngine.getSessionsWithTransactions();
-  expect(txnSessions.length).toEqual(2);
-  expect(txnSessions.every(s => s.inTransaction)).toBeTrue();
-});
-
-// ============================================================================
-// getOrCreateSession Tests
-// ============================================================================
-
-tap.test('session: getOrCreateSession should create if missing', async () => {
-  const session = sessionEngine.getOrCreateSession('get-or-create-new');
-  expect(session).toBeTruthy();
-  expect(session.id).toEqual('get-or-create-new');
-});
-
-tap.test('session: getOrCreateSession should return existing session', async () => {
-  const created = sessionEngine.startSession('get-or-create-existing');
-  const retrieved = sessionEngine.getOrCreateSession('get-or-create-existing');
-
-  expect(retrieved.id).toEqual(created.id);
-  expect(retrieved.createdAt).toEqual(created.createdAt);
-});
-
-tap.test('session: getOrCreateSession should touch existing session', async () => {
-  const session = sessionEngine.startSession('get-or-create-touch');
-  const originalLastActivity = session.lastActivityAt;
-
-  await new Promise(resolve => setTimeout(resolve, 10));
-
-  sessionEngine.getOrCreateSession('get-or-create-touch');
-  const updated = sessionEngine.getSession('get-or-create-touch');
-
-  expect(updated!.lastActivityAt).toBeGreaterThanOrEqual(originalLastActivity);
-});
-
-// ============================================================================
-// extractSessionId Static Method Tests
-// ============================================================================
-
-tap.test('session: extractSessionId should handle UUID object', async () => {
-  const { ObjectId } = smartmongo.tsmdb;
-  const uuid = new smartmongo.tsmdb.plugins.bson.UUID();
-  const lsid = { id: uuid };
-
-  const extracted = SessionEngine.extractSessionId(lsid);
-  expect(extracted).toEqual(uuid.toHexString());
-});
-
-tap.test('session: extractSessionId should handle string ID', async () => {
-  const lsid = { id: 'string-session-id' };
-
-  const extracted = SessionEngine.extractSessionId(lsid);
-  expect(extracted).toEqual('string-session-id');
-});
-
-tap.test('session: extractSessionId should handle binary format', async () => {
-  const binaryData = Buffer.from('test-binary-uuid', 'utf8').toString('base64');
-  const lsid = { id: { $binary: { base64: binaryData } } };
-
-  const extracted = SessionEngine.extractSessionId(lsid);
-  expect(extracted).toBeTruthy();
-  expect(typeof extracted).toEqual('string');
-});
-
-tap.test('session: extractSessionId should return undefined for null/undefined', async () => {
-  expect(SessionEngine.extractSessionId(null)).toBeUndefined();
-  expect(SessionEngine.extractSessionId(undefined)).toBeUndefined();
-});
-
-tap.test('session: extractSessionId should return undefined for empty object', async () => {
-  expect(SessionEngine.extractSessionId({})).toBeUndefined();
-});
-
-// ============================================================================
-// refreshSession Tests
-// ============================================================================
-
-tap.test('session: refreshSession should update lastActivityAt', async () => {
-  const session = sessionEngine.startSession('refresh-session-test');
-  const originalLastActivity = session.lastActivityAt;
-
-  await new Promise(resolve => setTimeout(resolve, 10));
-
-  const refreshed = sessionEngine.refreshSession('refresh-session-test');
-  expect(refreshed).toBeTrue();
-
-  const updated = sessionEngine.getSession('refresh-session-test');
-  expect(updated!.lastActivityAt).toBeGreaterThanOrEqual(originalLastActivity);
-});
-
-tap.test('session: refreshSession should return false for non-existent session', async () => {
-  const refreshed = sessionEngine.refreshSession('non-existent-refresh-session');
-  expect(refreshed).toBeFalse();
-});
-
-// ============================================================================
-// Cleanup
-// ============================================================================
-
-tap.test('session: close should clear all sessions', async () => {
-  sessionEngine.startSession('close-test-session');
-  expect(sessionEngine.getSessionCount()).toBeGreaterThan(0);
-
-  sessionEngine.close();
-
-  expect(sessionEngine.getSessionCount()).toEqual(0);
-});
-
-export default tap.start();

test/test.tsmdb.ts

@@ -1,572 +0,0 @@
-import { expect, tap } from '@git.zone/tstest/tapbundle';
-import * as smartmongo from '../ts/index.js';
-import { MongoClient, Db, Collection } from 'mongodb';
-
-const { tsmdb } = smartmongo;
-
-let server: smartmongo.tsmdb.TsmdbServer;
-let client: MongoClient;
-let db: Db;
-
-// ============================================================================
-// Server Startup
-// ============================================================================
-
-tap.test('tsmdb: should start the server', async () => {
-  server = new tsmdb.TsmdbServer({ port: 27117 }); // Use non-standard port for tests
-  await server.start();
-  expect(server.running).toBeTrue();
-});
-
-tap.test('tsmdb: should connect with official MongoClient', async () => {
-  client = new MongoClient('mongodb://127.0.0.1:27117', {
-    directConnection: true,
-    serverSelectionTimeoutMS: 5000,
-  });
-  await client.connect();
-  expect(client).toBeTruthy();
-});
-
-tap.test('tsmdb: should get a database instance', async () => {
-  db = client.db('testdb');
-  expect(db).toBeTruthy();
-  expect(db.databaseName).toEqual('testdb');
-});
-
-// ============================================================================
-// Basic CRUD Tests
-// ============================================================================
-
-tap.test('tsmdb: insertOne - should insert a document', async () => {
-  const collection = db.collection('users');
-  const result = await collection.insertOne({
-    name: 'John Doe',
-    email: 'john@example.com',
-    age: 30,
-  });
-
-  expect(result.acknowledged).toBeTrue();
-  expect(result.insertedId).toBeTruthy();
-});
-
-tap.test('tsmdb: insertMany - should insert multiple documents', async () => {
-  const collection = db.collection('users');
-  const result = await collection.insertMany([
-    { name: 'Jane Doe', email: 'jane@example.com', age: 25 },
-    { name: 'Bob Smith', email: 'bob@example.com', age: 35 },
-    { name: 'Alice Johnson', email: 'alice@example.com', age: 28 },
-  ]);
-
-  expect(result.acknowledged).toBeTrue();
-  expect(result.insertedCount).toEqual(3);
-  expect(Object.keys(result.insertedIds).length).toEqual(3);
-});
-
-tap.test('tsmdb: findOne - should find a single document', async () => {
-  const collection = db.collection('users');
-  const doc = await collection.findOne({ name: 'John Doe' });
-
-  expect(doc).toBeTruthy();
-  expect(doc!.name).toEqual('John Doe');
-  expect(doc!.email).toEqual('john@example.com');
-});
-
-tap.test('tsmdb: find - should find multiple documents', async () => {
-  const collection = db.collection('users');
-  const docs = await collection.find({ age: { $gte: 28 } }).toArray();
-
-  expect(docs.length).toEqual(3);
-});
-
-tap.test('tsmdb: updateOne - should update a single document', async () => {
-  const collection = db.collection('users');
-  const result = await collection.updateOne(
-    { name: 'John Doe' },
-    { $set: { age: 31 } }
-  );
-
-  expect(result.acknowledged).toBeTrue();
-  expect(result.matchedCount).toEqual(1);
-  expect(result.modifiedCount).toEqual(1);
-
-  const updated = await collection.findOne({ name: 'John Doe' });
-  expect(updated!.age).toEqual(31);
-});
-
-tap.test('tsmdb: updateMany - should update multiple documents', async () => {
-  const collection = db.collection('users');
-  const result = await collection.updateMany(
-    { age: { $gte: 30 } },
-    { $set: { senior: true } }
-  );
-
-  expect(result.acknowledged).toBeTrue();
-  expect(result.matchedCount).toEqual(2);
-  expect(result.modifiedCount).toEqual(2);
-});
-
-tap.test('tsmdb: deleteOne - should delete a single document', async () => {
-  const collection = db.collection('users');
-  const result = await collection.deleteOne({ name: 'Bob Smith' });
-
-  expect(result.acknowledged).toBeTrue();
-  expect(result.deletedCount).toEqual(1);
-});
-
-tap.test('tsmdb: deleteMany - should delete multiple documents', async () => {
-  const collection = db.collection('users');
-
-  // First add some test docs to delete
-  await collection.insertMany([
-    { name: 'Delete1', toDelete: true },
-    { name: 'Delete2', toDelete: true },
-  ]);
-
-  const result = await collection.deleteMany({ toDelete: true });
-
-  expect(result.acknowledged).toBeTrue();
-  expect(result.deletedCount).toEqual(2);
-});
-
-// ============================================================================
-// Query Operator Tests
-// ============================================================================
-
-tap.test('tsmdb: query - $eq operator', async () => {
-  const collection = db.collection('users');
-  const docs = await collection.find({ name: { $eq: 'Jane Doe' } }).toArray();
-  expect(docs.length).toEqual(1);
-  expect(docs[0].name).toEqual('Jane Doe');
-});
-
-tap.test('tsmdb: query - $ne operator', async () => {
-  const collection = db.collection('users');
-  const docs = await collection.find({ name: { $ne: 'Jane Doe' } }).toArray();
-  expect(docs.every(d => d.name !== 'Jane Doe')).toBeTrue();
-});
-
-tap.test('tsmdb: query - $gt and $lt operators', async () => {
-  const collection = db.collection('users');
-  const docs = await collection.find({ age: { $gt: 25, $lt: 35 } }).toArray();
-  expect(docs.every(d => d.age > 25 && d.age < 35)).toBeTrue();
-});
-
-tap.test('tsmdb: query - $in operator', async () => {
-  const collection = db.collection('users');
-  const docs = await collection.find({ name: { $in: ['Jane Doe', 'Alice Johnson'] } }).toArray();
-  expect(docs.length).toEqual(2);
-});
-
-tap.test('tsmdb: query - $or operator', async () => {
-  const collection = db.collection('users');
-  const docs = await collection.find({
-    $or: [
-      { name: 'Jane Doe' },
-      { age: 31 }
-    ]
-  }).toArray();
-  expect(docs.length).toBeGreaterThanOrEqual(1);
-});
-
-tap.test('tsmdb: query - $and operator', async () => {
-  const collection = db.collection('users');
-  const docs = await collection.find({
-    $and: [
-      { age: { $gte: 25 } },
-      { age: { $lte: 30 } }
-    ]
-  }).toArray();
-  expect(docs.every(d => d.age >= 25 && d.age <= 30)).toBeTrue();
-});
-
-tap.test('tsmdb: query - $exists operator', async () => {
-  const collection = db.collection('users');
-  const docs = await collection.find({ senior: { $exists: true } }).toArray();
-  expect(docs.every(d => 'senior' in d)).toBeTrue();
-});
-
-// ============================================================================
-// Update Operator Tests
-// ============================================================================
-
-tap.test('tsmdb: update - $inc operator', async () => {
-  const collection = db.collection('users');
-  await collection.updateOne(
-    { name: 'Jane Doe' },
-    { $inc: { age: 1 } }
-  );
-
-  const updated = await collection.findOne({ name: 'Jane Doe' });
-  expect(updated!.age).toEqual(26);
-});
-
-tap.test('tsmdb: update - $unset operator', async () => {
-  const collection = db.collection('users');
-  await collection.updateOne(
-    { name: 'Jane Doe' },
-    { $unset: { senior: '' } }
-  );
-
-  const updated = await collection.findOne({ name: 'Jane Doe' });
-  expect('senior' in updated!).toBeFalse();
-});
-
-tap.test('tsmdb: update - $push operator', async () => {
-  const collection = db.collection('users');
-  await collection.updateOne(
-    { name: 'Jane Doe' },
-    { $set: { tags: ['developer'] } }
-  );
-  await collection.updateOne(
-    { name: 'Jane Doe' },
-    { $push: { tags: 'tester' } }
-  );
-
-  const updated = await collection.findOne({ name: 'Jane Doe' });
-  expect(updated!.tags).toContain('developer');
-  expect(updated!.tags).toContain('tester');
-});
-
-tap.test('tsmdb: update - $pull operator', async () => {
-  const collection = db.collection('users');
-  await collection.updateOne(
-    { name: 'Jane Doe' },
-    { $pull: { tags: 'tester' } }
-  );
-
-  const updated = await collection.findOne({ name: 'Jane Doe' });
-  expect(updated!.tags).not.toContain('tester');
-});
-
-tap.test('tsmdb: update - upsert creates new document', async () => {
-  const collection = db.collection('users');
-  const result = await collection.updateOne(
-    { name: 'New User' },
-    { $set: { email: 'new@example.com', age: 40 } },
-    { upsert: true }
-  );
-
-  expect(result.upsertedCount).toEqual(1);
-  expect(result.upsertedId).toBeTruthy();
-
-  const inserted = await collection.findOne({ name: 'New User' });
-  expect(inserted).toBeTruthy();
-  expect(inserted!.email).toEqual('new@example.com');
-});
-
-// ============================================================================
-// Cursor Tests
-// ============================================================================
-
-tap.test('tsmdb: cursor - sort', async () => {
-  const collection = db.collection('users');
-  const docs = await collection.find({}).sort({ age: -1 }).toArray();
-
-  for (let i = 1; i < docs.length; i++) {
-    if (docs[i-1].age !== undefined && docs[i].age !== undefined) {
-      expect(docs[i-1].age).toBeGreaterThanOrEqual(docs[i].age);
-    }
-  }
-});
-
-tap.test('tsmdb: cursor - limit', async () => {
-  const collection = db.collection('users');
-  const docs = await collection.find({}).limit(2).toArray();
-  expect(docs.length).toBeLessThanOrEqual(2);
-});
-
-tap.test('tsmdb: cursor - skip', async () => {
-  const collection = db.collection('users');
-  const allDocs = await collection.find({}).toArray();
-  const skippedDocs = await collection.find({}).skip(1).toArray();
-
-  expect(skippedDocs.length).toEqual(Math.max(0, allDocs.length - 1));
-});
-
-tap.test('tsmdb: cursor - project', async () => {
-  const collection = db.collection('users');
-  const docs = await collection.find({}).project({ name: 1, _id: 0 }).toArray();
-
-  expect(docs.length).toBeGreaterThan(0);
-  expect(docs[0].name).toBeTruthy();
-  expect(docs[0].email).toBeUndefined();
-});
-
-// ============================================================================
-// FindOneAnd* Tests
-// ============================================================================
-
-tap.test('tsmdb: findOneAndUpdate - returns updated document', async () => {
-  const collection = db.collection('users');
-  const result = await collection.findOneAndUpdate(
-    { name: 'Jane Doe' },
-    { $set: { status: 'active' } },
-    { returnDocument: 'after' }
-  );
-
-  expect(result).toBeTruthy();
-  expect(result!.status).toEqual('active');
-});
-
-tap.test('tsmdb: findOneAndDelete - returns deleted document', async () => {
-  const collection = db.collection('users');
-
-  // Insert a temp doc to delete
-  await collection.insertOne({ name: 'TempUser', temp: true });
-
-  const result = await collection.findOneAndDelete({ name: 'TempUser' });
-
-  expect(result).toBeTruthy();
-  expect(result!.name).toEqual('TempUser');
-
-  // Verify deleted
-  const found = await collection.findOne({ name: 'TempUser' });
-  expect(found).toBeNull();
-});
-
-// ============================================================================
-// Count and Distinct Tests
-// ============================================================================
-
-tap.test('tsmdb: countDocuments - counts matching documents', async () => {
-  const collection = db.collection('users');
-  const count = await collection.countDocuments({ age: { $gte: 25 } });
-  expect(count).toBeGreaterThan(0);
-});
-
-tap.test('tsmdb: estimatedDocumentCount - returns total count', async () => {
-  const collection = db.collection('users');
-  const count = await collection.estimatedDocumentCount();
-  expect(count).toBeGreaterThan(0);
-});
-
-tap.test('tsmdb: distinct - returns unique values', async () => {
-  const collection = db.collection('users');
-  const names = await collection.distinct('name');
-
-  expect(names.length).toBeGreaterThan(0);
-  // All names should be unique
-  expect(new Set(names).size).toEqual(names.length);
-});
-
-// ============================================================================
-// Index Tests
-// ============================================================================
-
-tap.test('tsmdb: createIndex - creates a single index', async () => {
-  const collection = db.collection('users');
-  const indexName = await collection.createIndex({ email: 1 });
-
-  expect(indexName).toBeTruthy();
-  expect(indexName).toContain('email');
-});
-
-tap.test('tsmdb: createIndex - creates compound index', async () => {
-  const collection = db.collection('users');
-  const indexName = await collection.createIndex({ name: 1, age: -1 });
-
-  expect(indexName).toBeTruthy();
-});
-
-tap.test('tsmdb: listIndexes - lists all indexes', async () => {
-  const collection = db.collection('users');
-  const indexes = await collection.listIndexes().toArray();
-
-  expect(indexes.length).toBeGreaterThanOrEqual(1); // At least _id index
-  expect(indexes.some(i => i.name === '_id_')).toBeTrue();
-});
-
-tap.test('tsmdb: dropIndex - drops an index', async () => {
-  const collection = db.collection('users');
-  const indexName = await collection.createIndex({ toDropField: 1 });
-
-  await collection.dropIndex(indexName);
-
-  const indexes = await collection.listIndexes().toArray();
-  expect(indexes.some(i => i.name === indexName)).toBeFalse();
-});
-
-// ============================================================================
-// Aggregation Tests
-// ============================================================================
-
-tap.test('tsmdb: aggregate - $match stage', async () => {
-  const collection = db.collection('users');
-  const results = await collection.aggregate([
-    { $match: { age: { $gte: 25 } } }
-  ]).toArray();
-
-  expect(results.length).toBeGreaterThan(0);
-  expect(results.every(d => d.age >= 25)).toBeTrue();
-});
-
-tap.test('tsmdb: aggregate - $project stage', async () => {
-  const collection = db.collection('users');
-  const results = await collection.aggregate([
-    { $project: { name: 1, _id: 0 } }
-  ]).toArray();
-
-  expect(results.length).toBeGreaterThan(0);
-  expect(results[0].name).toBeTruthy();
-  expect(results[0].email).toBeUndefined();
-});
-
-tap.test('tsmdb: aggregate - $sort stage', async () => {
-  const collection = db.collection('users');
-  const results = await collection.aggregate([
-    { $match: { age: { $exists: true } } },
-    { $sort: { age: 1 } }
-  ]).toArray();
-
-  for (let i = 1; i < results.length; i++) {
-    expect(results[i].age).toBeGreaterThanOrEqual(results[i-1].age);
-  }
-});
-
-tap.test('tsmdb: aggregate - $group stage', async () => {
-  const collection = db.collection('users');
-
-  // Add some categorized data
-  await collection.insertMany([
-    { name: 'GroupTest1', category: 'A', value: 10 },
-    { name: 'GroupTest2', category: 'A', value: 20 },
-    { name: 'GroupTest3', category: 'B', value: 30 },
-  ]);
-
-  const results = await collection.aggregate([
-    { $match: { category: { $exists: true } } },
-    { $group: { _id: '$category', total: { $sum: '$value' } } }
-  ]).toArray();
-
-  expect(results.length).toEqual(2);
-  const groupA = results.find(r => r._id === 'A');
-  const groupB = results.find(r => r._id === 'B');
-  expect(groupA!.total).toEqual(30);
-  expect(groupB!.total).toEqual(30);
-});
-
-tap.test('tsmdb: aggregate - $limit and $skip stages', async () => {
-  const collection = db.collection('users');
-  const results = await collection.aggregate([
-    { $skip: 1 },
-    { $limit: 2 }
-  ]).toArray();
-
-  expect(results.length).toBeLessThanOrEqual(2);
-});
-
-// ============================================================================
-// Bulk Operations Tests
-// ============================================================================
-
-tap.test('tsmdb: bulkWrite - executes multiple operations', async () => {
-  const collection = db.collection('bulktest');
-
-  const result = await collection.bulkWrite([
-    { insertOne: { document: { name: 'Bulk1', value: 1 } } },
-    { insertOne: { document: { name: 'Bulk2', value: 2 } } },
-    { updateOne: { filter: { name: 'Bulk1' }, update: { $set: { updated: true } } } },
-  ]);
-
-  expect(result.insertedCount).toEqual(2);
-  expect(result.modifiedCount).toEqual(1);
-});
-
-// ============================================================================
-// Database Operations Tests
-// ============================================================================
-
-tap.test('tsmdb: listCollections - lists all collections', async () => {
-  const collections = await db.listCollections().toArray();
-  expect(collections.length).toBeGreaterThan(0);
-});
-
-tap.test('tsmdb: createCollection - creates a new collection', async () => {
-  await db.createCollection('newcollection');
-  const collections = await db.listCollections().toArray();
-  expect(collections.some(c => c.name === 'newcollection')).toBeTrue();
-});
-
-tap.test('tsmdb: dropCollection - drops a collection', async () => {
-  await db.createCollection('todrop');
-  await db.dropCollection('todrop');
-  const collections = await db.listCollections().toArray();
-  expect(collections.some(c => c.name === 'todrop')).toBeFalse();
-});
-
-// ============================================================================
-// Admin Tests
-// ============================================================================
-
-tap.test('tsmdb: admin - listDatabases', async () => {
-  const admin = client.db().admin();
-  const result = await admin.listDatabases();
-  expect(result.ok).toEqual(1);
-  expect(result.databases).toBeArray();
-});
-
-tap.test('tsmdb: admin - serverStatus', async () => {
-  const admin = client.db().admin();
-  const status = await admin.serverStatus();
-  expect(status.ok).toEqual(1);
-});
-
-tap.test('tsmdb: admin - ping', async () => {
-  const admin = client.db().admin();
-  const result = await admin.ping();
-  expect(result.ok).toEqual(1);
-});
-
-// ============================================================================
-// Replace Operations Tests
-// ============================================================================
-
-tap.test('tsmdb: replaceOne - replaces entire document', async () => {
-  const collection = db.collection('replacetest');
-  await collection.insertOne({ name: 'Original', field1: 'value1', field2: 'value2' });
-
-  const result = await collection.replaceOne(
-    { name: 'Original' },
-    { name: 'Replaced', newField: 'newValue' }
-  );
-
-  expect(result.matchedCount).toEqual(1);
-  expect(result.modifiedCount).toEqual(1);
-
-  const replaced = await collection.findOne({ name: 'Replaced' });
-  expect(replaced).toBeTruthy();
-  expect(replaced!.newField).toEqual('newValue');
-  expect(replaced!.field1).toBeUndefined();
-  expect(replaced!.field2).toBeUndefined();
-});
-
-tap.test('tsmdb: findOneAndReplace - returns replaced document', async () => {
-  const collection = db.collection('replacetest');
-  await collection.insertOne({ name: 'ToReplace', data: 'old' });
-
-  const result = await collection.findOneAndReplace(
-    { name: 'ToReplace' },
-    { name: 'Replaced', data: 'new' },
-    { returnDocument: 'after' }
-  );
-
-  expect(result).toBeTruthy();
-  expect(result!.data).toEqual('new');
-});
-
-// ============================================================================
-// Cleanup
-// ============================================================================
-
-tap.test('tsmdb: cleanup - drop database', async () => {
-  const result = await db.dropDatabase();
-  expect(result).toBeTrue();
-});
-
-tap.test('tsmdb: cleanup - close client and server', async () => {
-  await client.close();
-  await server.stop();
-  expect(server.running).toBeFalse();
-});
-
-export default tap.start();

test/test.tsmdb.wal.ts

@@ -1,411 +0,0 @@
-import { expect, tap } from '@git.zone/tstest/tapbundle';
-import * as smartmongo from '../ts/index.js';
-import * as path from 'path';
-import * as fs from 'fs/promises';
-
-const { WAL, ObjectId } = smartmongo.tsmdb;
-
-let wal: InstanceType<typeof WAL>;
-const TEST_WAL_PATH = '/tmp/tsmdb-test-wal/test.wal';
-
-// Helper to clean up test files
-async function cleanupTestFiles() {
-  try {
-    await fs.rm('/tmp/tsmdb-test-wal', { recursive: true, force: true });
-  } catch {
-    // Ignore if doesn't exist
-  }
-}
-
-// ============================================================================
-// Setup
-// ============================================================================
-
-tap.test('wal: cleanup before tests', async () => {
-  await cleanupTestFiles();
-});
-
-tap.test('wal: should create WAL instance', async () => {
-  wal = new WAL(TEST_WAL_PATH, { checkpointInterval: 100 });
-  expect(wal).toBeTruthy();
-});
-
-tap.test('wal: should initialize WAL', async () => {
-  const result = await wal.initialize();
-  expect(result).toBeTruthy();
-  expect(result.recoveredEntries).toBeArray();
-  expect(result.recoveredEntries.length).toEqual(0);
-});
-
-// ============================================================================
-// LSN Tests
-// ============================================================================
-
-tap.test('wal: getCurrentLsn should return 0 initially', async () => {
-  const lsn = wal.getCurrentLsn();
-  expect(lsn).toEqual(0);
-});
-
-tap.test('wal: LSN should increment after logging', async () => {
-  const doc = { _id: new ObjectId(), name: 'Test' };
-  const lsn = await wal.logInsert('testdb', 'testcoll', doc as any);
-
-  expect(lsn).toEqual(1);
-  expect(wal.getCurrentLsn()).toEqual(1);
-});
-
-// ============================================================================
-// Insert Logging Tests
-// ============================================================================
-
-tap.test('wal: logInsert should create entry with correct structure', async () => {
-  const doc = { _id: new ObjectId(), name: 'InsertTest', value: 42 };
-  const lsn = await wal.logInsert('testdb', 'insertcoll', doc as any);
-
-  expect(lsn).toBeGreaterThan(0);
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  expect(entry).toBeTruthy();
-  expect(entry!.operation).toEqual('insert');
-  expect(entry!.dbName).toEqual('testdb');
-  expect(entry!.collName).toEqual('insertcoll');
-  expect(entry!.documentId).toEqual(doc._id.toHexString());
-  expect(entry!.data).toBeTruthy();
-  expect(entry!.timestamp).toBeGreaterThan(0);
-  expect(entry!.checksum).toBeGreaterThan(0);
-});
-
-tap.test('wal: logInsert with transaction ID', async () => {
-  const doc = { _id: new ObjectId(), name: 'TxnInsertTest' };
-  const lsn = await wal.logInsert('testdb', 'insertcoll', doc as any, 'txn-123');
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  expect(entry!.txnId).toEqual('txn-123');
-});
-
-// ============================================================================
-// Update Logging Tests
-// ============================================================================
-
-tap.test('wal: logUpdate should store old and new document', async () => {
-  const oldDoc = { _id: new ObjectId(), name: 'OldName', value: 1 };
-  const newDoc = { ...oldDoc, name: 'NewName', value: 2 };
-
-  const lsn = await wal.logUpdate('testdb', 'updatecoll', oldDoc as any, newDoc as any);
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  expect(entry).toBeTruthy();
-  expect(entry!.operation).toEqual('update');
-  expect(entry!.data).toBeTruthy();
-  expect(entry!.previousData).toBeTruthy();
-  expect(entry!.documentId).toEqual(oldDoc._id.toHexString());
-});
-
-// ============================================================================
-// Delete Logging Tests
-// ============================================================================
-
-tap.test('wal: logDelete should record deleted document', async () => {
-  const doc = { _id: new ObjectId(), name: 'ToDelete' };
-
-  const lsn = await wal.logDelete('testdb', 'deletecoll', doc as any);
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  expect(entry).toBeTruthy();
-  expect(entry!.operation).toEqual('delete');
-  expect(entry!.previousData).toBeTruthy();
-  expect(entry!.data).toBeUndefined();
-});
-
-// ============================================================================
-// Transaction Logging Tests
-// ============================================================================
-
-tap.test('wal: logBeginTransaction should create begin entry', async () => {
-  const lsn = await wal.logBeginTransaction('txn-begin-test');
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  expect(entry).toBeTruthy();
-  expect(entry!.operation).toEqual('begin');
-  expect(entry!.txnId).toEqual('txn-begin-test');
-});
-
-tap.test('wal: logCommitTransaction should create commit entry', async () => {
-  const lsn = await wal.logCommitTransaction('txn-commit-test');
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  expect(entry).toBeTruthy();
-  expect(entry!.operation).toEqual('commit');
-  expect(entry!.txnId).toEqual('txn-commit-test');
-});
-
-tap.test('wal: logAbortTransaction should create abort entry', async () => {
-  const lsn = await wal.logAbortTransaction('txn-abort-test');
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  expect(entry).toBeTruthy();
-  expect(entry!.operation).toEqual('abort');
-  expect(entry!.txnId).toEqual('txn-abort-test');
-});
-
-// ============================================================================
-// getTransactionEntries Tests
-// ============================================================================
-
-tap.test('wal: getTransactionEntries should return entries for transaction', async () => {
-  // Log a complete transaction
-  const txnId = 'txn-entries-test';
-  await wal.logBeginTransaction(txnId);
-
-  const doc1 = { _id: new ObjectId(), name: 'TxnDoc1' };
-  await wal.logInsert('testdb', 'txncoll', doc1 as any, txnId);
-
-  const doc2 = { _id: new ObjectId(), name: 'TxnDoc2' };
-  await wal.logInsert('testdb', 'txncoll', doc2 as any, txnId);
-
-  await wal.logCommitTransaction(txnId);
-
-  const entries = wal.getTransactionEntries(txnId);
-
-  expect(entries.length).toEqual(4); // begin + 2 inserts + commit
-  expect(entries.every(e => e.txnId === txnId)).toBeTrue();
-});
-
-tap.test('wal: getTransactionEntries should return empty for unknown transaction', async () => {
-  const entries = wal.getTransactionEntries('unknown-txn-id');
-  expect(entries.length).toEqual(0);
-});
-
-// ============================================================================
-// getEntriesAfter Tests
-// ============================================================================
-
-tap.test('wal: getEntriesAfter should filter by LSN', async () => {
-  const currentLsn = wal.getCurrentLsn();
-
-  // Add more entries
-  const doc = { _id: new ObjectId(), name: 'AfterTest' };
-  await wal.logInsert('testdb', 'aftercoll', doc as any);
-
-  const entries = wal.getEntriesAfter(currentLsn);
-  expect(entries.length).toEqual(1);
-  expect(entries[0].lsn).toBeGreaterThan(currentLsn);
-});
-
-tap.test('wal: getEntriesAfter with LSN 0 should return all entries', async () => {
-  const entries = wal.getEntriesAfter(0);
-  expect(entries.length).toBeGreaterThan(0);
-  expect(entries.length).toEqual(wal.getCurrentLsn());
-});
-
-// ============================================================================
-// Checkpoint Tests
-// ============================================================================
-
-tap.test('wal: checkpoint should create checkpoint entry', async () => {
-  const lsn = await wal.checkpoint();
-
-  expect(lsn).toBeGreaterThan(0);
-
-  // After checkpoint, getEntriesAfter(checkpoint) should be limited
-  const entries = wal.getEntriesAfter(0);
-  expect(entries.some(e => e.operation === 'checkpoint')).toBeTrue();
-});
-
-// ============================================================================
-// Document Recovery Tests
-// ============================================================================
-
-tap.test('wal: recoverDocument should deserialize document from entry', async () => {
-  const originalDoc = { _id: new ObjectId(), name: 'RecoverTest', nested: { a: 1, b: 2 } };
-  const lsn = await wal.logInsert('testdb', 'recovercoll', originalDoc as any);
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  const recovered = wal.recoverDocument(entry!);
-
-  expect(recovered).toBeTruthy();
-  expect(recovered!.name).toEqual('RecoverTest');
-  expect(recovered!.nested.a).toEqual(1);
-  expect(recovered!.nested.b).toEqual(2);
-});
-
-tap.test('wal: recoverDocument should return null for entry without data', async () => {
-  const lsn = await wal.logBeginTransaction('recover-no-data');
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  const recovered = wal.recoverDocument(entry!);
-  expect(recovered).toBeNull();
-});
-
-tap.test('wal: recoverPreviousDocument should deserialize previous state', async () => {
-  const oldDoc = { _id: new ObjectId(), name: 'Old', value: 100 };
-  const newDoc = { ...oldDoc, name: 'New', value: 200 };
-
-  const lsn = await wal.logUpdate('testdb', 'recovercoll', oldDoc as any, newDoc as any);
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  const previous = wal.recoverPreviousDocument(entry!);
-
-  expect(previous).toBeTruthy();
-  expect(previous!.name).toEqual('Old');
-  expect(previous!.value).toEqual(100);
-});
-
-tap.test('wal: recoverPreviousDocument should return null for insert entry', async () => {
-  const doc = { _id: new ObjectId(), name: 'NoPrevious' };
-  const lsn = await wal.logInsert('testdb', 'recovercoll', doc as any);
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  const previous = wal.recoverPreviousDocument(entry!);
-  expect(previous).toBeNull();
-});
-
-// ============================================================================
-// WAL Persistence and Recovery Tests
-// ============================================================================
-
-tap.test('wal: should persist and recover entries', async () => {
-  // Close current WAL
-  await wal.close();
-
-  // Create new WAL instance and initialize (should recover)
-  const wal2 = new WAL(TEST_WAL_PATH, { checkpointInterval: 100 });
-  const result = await wal2.initialize();
-
-  // Should have recovered entries
-  expect(result.recoveredEntries).toBeArray();
-  // After checkpoint, there might not be many recoverable entries
-  // but getCurrentLsn should be preserved or reset
-
-  await wal2.close();
-});
-
-// ============================================================================
-// Entry Checksum Tests
-// ============================================================================
-
-tap.test('wal: entries should have valid checksums', async () => {
-  wal = new WAL(TEST_WAL_PATH + '.checksum', { checkpointInterval: 100 });
-  await wal.initialize();
-
-  const doc = { _id: new ObjectId(), name: 'ChecksumTest' };
-  const lsn = await wal.logInsert('testdb', 'checksumcoll', doc as any);
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  expect(entry!.checksum).toBeGreaterThan(0);
-  expect(typeof entry!.checksum).toEqual('number');
-});
-
-// ============================================================================
-// Edge Cases
-// ============================================================================
-
-tap.test('wal: should handle special characters in document', async () => {
-  const doc = {
-    _id: new ObjectId(),
-    name: 'Test\nWith\tSpecial\r\nChars',
-    emoji: '🎉',
-    unicode: '日本語',
-  };
-
-  const lsn = await wal.logInsert('testdb', 'specialcoll', doc as any);
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  const recovered = wal.recoverDocument(entry!);
-  expect(recovered!.name).toEqual('Test\nWith\tSpecial\r\nChars');
-  expect(recovered!.emoji).toEqual('🎉');
-  expect(recovered!.unicode).toEqual('日本語');
-});
-
-tap.test('wal: should handle binary data in documents', async () => {
-  const doc = {
-    _id: new ObjectId(),
-    binaryField: Buffer.from([0x00, 0xFF, 0x7F, 0x80]),
-  };
-
-  const lsn = await wal.logInsert('testdb', 'binarycoll', doc as any);
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  const recovered = wal.recoverDocument(entry!);
-  expect(recovered).toBeTruthy();
-});
-
-tap.test('wal: should handle nested documents', async () => {
-  const doc = {
-    _id: new ObjectId(),
-    level1: {
-      level2: {
-        level3: {
-          value: 'deep',
-        },
-      },
-    },
-  };
-
-  const lsn = await wal.logInsert('testdb', 'nestedcoll', doc as any);
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  const recovered = wal.recoverDocument(entry!);
-  expect(recovered!.level1.level2.level3.value).toEqual('deep');
-});
-
-tap.test('wal: should handle arrays in documents', async () => {
-  const doc = {
-    _id: new ObjectId(),
-    tags: ['a', 'b', 'c'],
-    numbers: [1, 2, 3],
-    mixed: [1, 'two', { three: 3 }],
-  };
-
-  const lsn = await wal.logInsert('testdb', 'arraycoll', doc as any);
-
-  const entries = wal.getEntriesAfter(lsn - 1);
-  const entry = entries.find(e => e.lsn === lsn);
-
-  const recovered = wal.recoverDocument(entry!);
-  expect(recovered!.tags).toEqual(['a', 'b', 'c']);
-  expect(recovered!.numbers).toEqual([1, 2, 3]);
-  expect(recovered!.mixed[2].three).toEqual(3);
-});
-
-// ============================================================================
-// Cleanup
-// ============================================================================
-
-tap.test('wal: cleanup', async () => {
-  await wal.close();
-  await cleanupTestFiles();
-  expect(true).toBeTrue();
-});
-
-export default tap.start();

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartmongo',
-  version: '4.2.1',
-  description: 'A module for creating and managing a local MongoDB instance for testing purposes.'
+  version: '7.0.0',
+  description: 'A MongoDB memory server toolkit for testing and development, providing real MongoDB replica sets via mongodb-memory-server.'
 }

ts/classes.smartmongo.ts

@@ -1,4 +1,4 @@
-import { commitinfo } from '../00_commitinfo_data.js';
+import { commitinfo } from './00_commitinfo_data.js';
 import * as plugins from './plugins.js';
 
 export class SmartMongo {
@@ -12,7 +12,7 @@ export class SmartMongo {
   // INSTANCE
   private _readyDeferred = plugins.smartpromise.defer();
   public readyPromise = this._readyDeferred.promise;
-  public mongoReplicaSet: plugins.mongoPlugin.MongoMemoryReplSet;
+  public mongoReplicaSet!: plugins.mongoPlugin.MongoMemoryReplSet;
 
   constructor() {}
 

ts/index.ts

@@ -1,14 +1,4 @@
 import { commitinfo } from './00_commitinfo_data.js';
 
-// Export SmartMongo from ts_mongotools
-export { SmartMongo } from './ts_mongotools/index.js';
-
-// Export TsmDB module
-export * as tsmdb from './ts_tsmdb/index.js';
-
-// Export LocalTsmDb from ts_local
-export { LocalTsmDb } from './ts_local/index.js';
-export type { ILocalTsmDbOptions } from './ts_local/index.js';
-
-// Export commitinfo
+export { SmartMongo } from './classes.smartmongo.js';
 export { commitinfo };

ts/ts_local/classes.localtsmdb.ts

@@ -1,138 +0,0 @@
-import * as plugins from './plugins.js';
-import { TsmdbServer } from '../ts_tsmdb/index.js';
-import type { MongoClient } from 'mongodb';
-
-export interface ILocalTsmDbOptions {
-  folderPath: string;
-  port?: number;
-  host?: string;
-}
-
-/**
- * LocalTsmDb - Convenience class for local MongoDB-compatible database
- *
- * This class wraps TsmdbServer and provides a simple interface for
- * starting a local file-based MongoDB-compatible server and connecting to it.
- *
- * @example
- * ```typescript
- * import { LocalTsmDb } from '@push.rocks/smartmongo';
- *
- * const db = new LocalTsmDb({ folderPath: './data' });
- * const client = await db.start();
- *
- * // Use the MongoDB client
- * const collection = client.db('mydb').collection('users');
- * await collection.insertOne({ name: 'Alice' });
- *
- * // When done
- * await db.stop();
- * ```
- */
-export class LocalTsmDb {
-  private options: ILocalTsmDbOptions;
-  private server: TsmdbServer | null = null;
-  private client: MongoClient | null = null;
-
-  constructor(options: ILocalTsmDbOptions) {
-    this.options = options;
-  }
-
-  /**
-   * Find an available port starting from the given port
-   */
-  private async findAvailablePort(startPort = 27017): Promise<number> {
-    return new Promise((resolve, reject) => {
-      const server = plugins.net.createServer();
-      server.listen(startPort, '127.0.0.1', () => {
-        const addr = server.address();
-        const port = typeof addr === 'object' && addr ? addr.port : startPort;
-        server.close(() => resolve(port));
-      });
-      server.on('error', () => {
-        this.findAvailablePort(startPort + 1).then(resolve).catch(reject);
-      });
-    });
-  }
-
-  /**
-   * Start the local TsmDB server and return a connected MongoDB client
-   */
-  async start(): Promise<MongoClient> {
-    if (this.server && this.client) {
-      throw new Error('LocalTsmDb is already running');
-    }
-
-    const port = this.options.port ?? await this.findAvailablePort();
-    const host = this.options.host ?? '127.0.0.1';
-
-    this.server = new TsmdbServer({
-      port,
-      host,
-      storage: 'file',
-      storagePath: this.options.folderPath,
-    });
-    await this.server.start();
-
-    // Dynamically import mongodb to avoid requiring it as a hard dependency
-    const mongodb = await import('mongodb');
-    this.client = new mongodb.MongoClient(this.server.getConnectionUri(), {
-      directConnection: true,
-      serverSelectionTimeoutMS: 5000,
-    });
-    await this.client.connect();
-
-    return this.client;
-  }
-
-  /**
-   * Get the MongoDB client (throws if not started)
-   */
-  getClient(): MongoClient {
-    if (!this.client) {
-      throw new Error('LocalTsmDb is not running. Call start() first.');
-    }
-    return this.client;
-  }
-
-  /**
-   * Get the underlying TsmdbServer instance (throws if not started)
-   */
-  getServer(): TsmdbServer {
-    if (!this.server) {
-      throw new Error('LocalTsmDb is not running. Call start() first.');
-    }
-    return this.server;
-  }
-
-  /**
-   * Get the connection URI
-   */
-  getConnectionUri(): string {
-    if (!this.server) {
-      throw new Error('LocalTsmDb is not running. Call start() first.');
-    }
-    return this.server.getConnectionUri();
-  }
-
-  /**
-   * Check if the server is running
-   */
-  get running(): boolean {
-    return this.server !== null && this.server.running;
-  }
-
-  /**
-   * Stop the local TsmDB server and close the client connection
-   */
-  async stop(): Promise<void> {
-    if (this.client) {
-      await this.client.close();
-      this.client = null;
-    }
-    if (this.server) {
-      await this.server.stop();
-      this.server = null;
-    }
-  }
-}

ts/ts_local/index.ts

@@ -1,2 +0,0 @@
-export { LocalTsmDb } from './classes.localtsmdb.js';
-export type { ILocalTsmDbOptions } from './classes.localtsmdb.js';

ts/ts_local/plugins.ts

@@ -1,4 +0,0 @@
-import * as smartpromise from '@push.rocks/smartpromise';
-import * as net from 'net';
-
-export { smartpromise, net };

ts/ts_mongotools/index.ts

@@ -1,2 +0,0 @@
-export * from './plugins.js';
-export { SmartMongo } from './classes.smartmongo.js';

ts/ts_tsmdb/engine/AggregationEngine.ts

@@ -1,283 +0,0 @@
-import * as plugins from '../plugins.js';
-import type { Document, IStoredDocument, IAggregateOptions } from '../types/interfaces.js';
-
-// Import mingo Aggregator
-import { Aggregator } from 'mingo';
-
-/**
- * Aggregation engine using mingo for MongoDB-compatible aggregation pipeline execution
- */
-export class AggregationEngine {
-  /**
-   * Execute an aggregation pipeline on a collection of documents
-   */
-  static aggregate(
-    documents: IStoredDocument[],
-    pipeline: Document[],
-    options?: IAggregateOptions
-  ): Document[] {
-    if (!pipeline || pipeline.length === 0) {
-      return documents;
-    }
-
-    // Create mingo aggregator with the pipeline
-    const aggregator = new Aggregator(pipeline, {
-      collation: options?.collation as any,
-    });
-
-    // Run the aggregation
-    const result = aggregator.run(documents);
-
-    return Array.isArray(result) ? result : [];
-  }
-
-  /**
-   * Execute aggregation and return an iterator for lazy evaluation
-   */
-  static *aggregateIterator(
-    documents: IStoredDocument[],
-    pipeline: Document[],
-    options?: IAggregateOptions
-  ): Generator<Document> {
-    const aggregator = new Aggregator(pipeline, {
-      collation: options?.collation as any,
-    });
-
-    // Get the cursor from mingo
-    const cursor = aggregator.stream(documents);
-
-    for (const doc of cursor) {
-      yield doc;
-    }
-  }
-
-  /**
-   * Execute a $lookup stage manually (for cross-collection lookups)
-   * This is used when the lookup references another collection in the same database
-   */
-  static executeLookup(
-    documents: IStoredDocument[],
-    lookupSpec: {
-      from: string;
-      localField: string;
-      foreignField: string;
-      as: string;
-    },
-    foreignCollection: IStoredDocument[]
-  ): Document[] {
-    const { localField, foreignField, as } = lookupSpec;
-
-    return documents.map(doc => {
-      const localValue = this.getNestedValue(doc, localField);
-      const matches = foreignCollection.filter(foreignDoc => {
-        const foreignValue = this.getNestedValue(foreignDoc, foreignField);
-        return this.valuesMatch(localValue, foreignValue);
-      });
-
-      return {
-        ...doc,
-        [as]: matches,
-      };
-    });
-  }
-
-  /**
-   * Execute a $graphLookup stage manually
-   */
-  static executeGraphLookup(
-    documents: IStoredDocument[],
-    graphLookupSpec: {
-      from: string;
-      startWith: string | Document;
-      connectFromField: string;
-      connectToField: string;
-      as: string;
-      maxDepth?: number;
-      depthField?: string;
-      restrictSearchWithMatch?: Document;
-    },
-    foreignCollection: IStoredDocument[]
-  ): Document[] {
-    const {
-      startWith,
-      connectFromField,
-      connectToField,
-      as,
-      maxDepth = 10,
-      depthField,
-      restrictSearchWithMatch,
-    } = graphLookupSpec;
-
-    return documents.map(doc => {
-      const startValue = typeof startWith === 'string' && startWith.startsWith('$')
-        ? this.getNestedValue(doc, startWith.slice(1))
-        : startWith;
-
-      const results: Document[] = [];
-      const visited = new Set<string>();
-      const queue: Array<{ value: any; depth: number }> = [];
-
-      // Initialize with start value(s)
-      const startValues = Array.isArray(startValue) ? startValue : [startValue];
-      for (const val of startValues) {
-        queue.push({ value: val, depth: 0 });
-      }
-
-      while (queue.length > 0) {
-        const { value, depth } = queue.shift()!;
-        if (depth > maxDepth) continue;
-
-        const valueKey = JSON.stringify(value);
-        if (visited.has(valueKey)) continue;
-        visited.add(valueKey);
-
-        // Find matching documents
-        for (const foreignDoc of foreignCollection) {
-          const foreignValue = this.getNestedValue(foreignDoc, connectToField);
-
-          if (this.valuesMatch(value, foreignValue)) {
-            // Check restrictSearchWithMatch
-            if (restrictSearchWithMatch) {
-              const matchQuery = new plugins.mingo.Query(restrictSearchWithMatch);
-              if (!matchQuery.test(foreignDoc)) continue;
-            }
-
-            const resultDoc = depthField
-              ? { ...foreignDoc, [depthField]: depth }
-              : { ...foreignDoc };
-
-            // Avoid duplicates in results
-            const docKey = foreignDoc._id.toHexString();
-            if (!results.some(r => r._id?.toHexString?.() === docKey)) {
-              results.push(resultDoc);
-
-              // Add connected values to queue
-              const nextValue = this.getNestedValue(foreignDoc, connectFromField);
-              if (nextValue !== undefined) {
-                const nextValues = Array.isArray(nextValue) ? nextValue : [nextValue];
-                for (const nv of nextValues) {
-                  queue.push({ value: nv, depth: depth + 1 });
-                }
-              }
-            }
-          }
-        }
-      }
-
-      return {
-        ...doc,
-        [as]: results,
-      };
-    });
-  }
-
-  /**
-   * Execute a $facet stage manually
-   */
-  static executeFacet(
-    documents: IStoredDocument[],
-    facetSpec: Record<string, Document[]>
-  ): Document {
-    const result: Document = {};
-
-    for (const [facetName, pipeline] of Object.entries(facetSpec)) {
-      result[facetName] = this.aggregate(documents, pipeline);
-    }
-
-    return result;
-  }
-
-  /**
-   * Execute a $unionWith stage
-   */
-  static executeUnionWith(
-    documents: IStoredDocument[],
-    otherDocuments: IStoredDocument[],
-    pipeline?: Document[]
-  ): Document[] {
-    let unionDocs: Document[] = otherDocuments;
-    if (pipeline && pipeline.length > 0) {
-      unionDocs = this.aggregate(otherDocuments, pipeline);
-    }
-    return [...documents, ...unionDocs];
-  }
-
-  /**
-   * Execute a $merge stage (output to another collection)
-   * Returns the documents that would be inserted/updated
-   */
-  static prepareMerge(
-    documents: Document[],
-    mergeSpec: {
-      into: string;
-      on?: string | string[];
-      whenMatched?: 'replace' | 'keepExisting' | 'merge' | 'fail' | Document[];
-      whenNotMatched?: 'insert' | 'discard' | 'fail';
-    }
-  ): {
-    toInsert: Document[];
-    toUpdate: Array<{ filter: Document; update: Document }>;
-    onField: string | string[];
-    whenMatched: string | Document[];
-    whenNotMatched: string;
-  } {
-    const onField = mergeSpec.on || '_id';
-    const whenMatched = mergeSpec.whenMatched || 'merge';
-    const whenNotMatched = mergeSpec.whenNotMatched || 'insert';
-
-    return {
-      toInsert: [],
-      toUpdate: [],
-      onField,
-      whenMatched,
-      whenNotMatched,
-    };
-  }
-
-  // ============================================================================
-  // Helper Methods
-  // ============================================================================
-
-  private static getNestedValue(obj: any, path: string): any {
-    const parts = path.split('.');
-    let current = obj;
-
-    for (const part of parts) {
-      if (current === null || current === undefined) {
-        return undefined;
-      }
-      current = current[part];
-    }
-
-    return current;
-  }
-
-  private static valuesMatch(a: any, b: any): boolean {
-    if (a === b) return true;
-
-    // Handle ObjectId comparison
-    if (a instanceof plugins.bson.ObjectId && b instanceof plugins.bson.ObjectId) {
-      return a.equals(b);
-    }
-
-    // Handle array contains check
-    if (Array.isArray(a)) {
-      return a.some(item => this.valuesMatch(item, b));
-    }
-    if (Array.isArray(b)) {
-      return b.some(item => this.valuesMatch(a, item));
-    }
-
-    // Handle Date comparison
-    if (a instanceof Date && b instanceof Date) {
-      return a.getTime() === b.getTime();
-    }
-
-    // Handle object comparison
-    if (typeof a === 'object' && typeof b === 'object' && a !== null && b !== null) {
-      return JSON.stringify(a) === JSON.stringify(b);
-    }
-
-    return false;
-  }
-}

ts/ts_tsmdb/engine/IndexEngine.ts

@@ -1,798 +0,0 @@
-import * as plugins from '../plugins.js';
-import type { IStorageAdapter } from '../storage/IStorageAdapter.js';
-
-// Simple B-Tree implementation for range queries
-// Since sorted-btree has ESM/CJS interop issues, we use a simple custom implementation
-class SimpleBTree<K, V> {
-  private entries: Map<string, { key: K; value: V }> = new Map();
-  private sortedKeys: K[] = [];
-  private comparator: (a: K, b: K) => number;
-
-  constructor(_unused?: undefined, comparator?: (a: K, b: K) => number) {
-    this.comparator = comparator || ((a: K, b: K) => {
-      if (a < b) return -1;
-      if (a > b) return 1;
-      return 0;
-    });
-  }
-
-  private keyToString(key: K): string {
-    return JSON.stringify(key);
-  }
-
-  set(key: K, value: V): boolean {
-    const keyStr = this.keyToString(key);
-    const existed = this.entries.has(keyStr);
-    this.entries.set(keyStr, { key, value });
-
-    if (!existed) {
-      // Insert in sorted order
-      const idx = this.sortedKeys.findIndex(k => this.comparator(k, key) > 0);
-      if (idx === -1) {
-        this.sortedKeys.push(key);
-      } else {
-        this.sortedKeys.splice(idx, 0, key);
-      }
-    }
-    return !existed;
-  }
-
-  get(key: K): V | undefined {
-    const entry = this.entries.get(this.keyToString(key));
-    return entry?.value;
-  }
-
-  delete(key: K): boolean {
-    const keyStr = this.keyToString(key);
-    if (this.entries.has(keyStr)) {
-      this.entries.delete(keyStr);
-      const idx = this.sortedKeys.findIndex(k => this.comparator(k, key) === 0);
-      if (idx !== -1) {
-        this.sortedKeys.splice(idx, 1);
-      }
-      return true;
-    }
-    return false;
-  }
-
-  forRange(
-    lowKey: K | undefined,
-    highKey: K | undefined,
-    lowInclusive: boolean,
-    highInclusive: boolean,
-    callback: (value: V, key: K) => void
-  ): void {
-    for (const key of this.sortedKeys) {
-      // Check low bound
-      if (lowKey !== undefined) {
-        const cmp = this.comparator(key, lowKey);
-        if (cmp < 0) continue;
-        if (cmp === 0 && !lowInclusive) continue;
-      }
-
-      // Check high bound
-      if (highKey !== undefined) {
-        const cmp = this.comparator(key, highKey);
-        if (cmp > 0) break;
-        if (cmp === 0 && !highInclusive) break;
-      }
-
-      const entry = this.entries.get(this.keyToString(key));
-      if (entry) {
-        callback(entry.value, key);
-      }
-    }
-  }
-}
-import type {
-  Document,
-  IStoredDocument,
-  IIndexSpecification,
-  IIndexInfo,
-  ICreateIndexOptions,
-} from '../types/interfaces.js';
-import { TsmdbDuplicateKeyError, TsmdbIndexError } from '../errors/TsmdbErrors.js';
-import { QueryEngine } from './QueryEngine.js';
-
-/**
- * Comparator for B-Tree that handles mixed types consistently
- */
-function indexKeyComparator(a: any, b: any): number {
-  // Handle null/undefined
-  if (a === null || a === undefined) {
-    if (b === null || b === undefined) return 0;
-    return -1;
-  }
-  if (b === null || b === undefined) return 1;
-
-  // Handle arrays (compound keys)
-  if (Array.isArray(a) && Array.isArray(b)) {
-    for (let i = 0; i < Math.max(a.length, b.length); i++) {
-      const cmp = indexKeyComparator(a[i], b[i]);
-      if (cmp !== 0) return cmp;
-    }
-    return 0;
-  }
-
-  // Handle ObjectId
-  if (a instanceof plugins.bson.ObjectId && b instanceof plugins.bson.ObjectId) {
-    return a.toHexString().localeCompare(b.toHexString());
-  }
-
-  // Handle Date
-  if (a instanceof Date && b instanceof Date) {
-    return a.getTime() - b.getTime();
-  }
-
-  // Handle different types - use type ordering (null < number < string < object)
-  const typeOrder = (v: any): number => {
-    if (v === null || v === undefined) return 0;
-    if (typeof v === 'number') return 1;
-    if (typeof v === 'string') return 2;
-    if (typeof v === 'boolean') return 3;
-    if (v instanceof Date) return 4;
-    if (v instanceof plugins.bson.ObjectId) return 5;
-    return 6;
-  };
-
-  const typeA = typeOrder(a);
-  const typeB = typeOrder(b);
-  if (typeA !== typeB) return typeA - typeB;
-
-  // Same type comparison
-  if (typeof a === 'number') return a - b;
-  if (typeof a === 'string') return a.localeCompare(b);
-  if (typeof a === 'boolean') return (a ? 1 : 0) - (b ? 1 : 0);
-
-  // Fallback to string comparison
-  return String(a).localeCompare(String(b));
-}
-
-/**
- * Index data structure using B-Tree for range queries
- */
-interface IIndexData {
-  name: string;
-  key: Record<string, 1 | -1 | string>;
-  unique: boolean;
-  sparse: boolean;
-  expireAfterSeconds?: number;
-  // B-Tree for ordered index lookups (supports range queries)
-  btree: SimpleBTree<any, Set<string>>;
-  // Hash map for fast equality lookups
-  hashMap: Map<string, Set<string>>;
-}
-
-/**
- * Index engine for managing indexes and query optimization
- */
-export class IndexEngine {
-  private dbName: string;
-  private collName: string;
-  private storage: IStorageAdapter;
-  private indexes: Map<string, IIndexData> = new Map();
-  private initialized = false;
-
-  constructor(dbName: string, collName: string, storage: IStorageAdapter) {
-    this.dbName = dbName;
-    this.collName = collName;
-    this.storage = storage;
-  }
-
-  /**
-   * Initialize indexes from storage
-   */
-  async initialize(): Promise<void> {
-    if (this.initialized) return;
-
-    const storedIndexes = await this.storage.getIndexes(this.dbName, this.collName);
-    const documents = await this.storage.findAll(this.dbName, this.collName);
-
-    for (const indexSpec of storedIndexes) {
-      const indexData: IIndexData = {
-        name: indexSpec.name,
-        key: indexSpec.key,
-        unique: indexSpec.unique || false,
-        sparse: indexSpec.sparse || false,
-        expireAfterSeconds: indexSpec.expireAfterSeconds,
-        btree: new SimpleBTree<any, Set<string>>(undefined, indexKeyComparator),
-        hashMap: new Map(),
-      };
-
-      // Build index entries
-      for (const doc of documents) {
-        const keyValue = this.extractKeyValue(doc, indexSpec.key);
-        if (keyValue !== null || !indexData.sparse) {
-          const keyStr = JSON.stringify(keyValue);
-
-          // Add to hash map
-          if (!indexData.hashMap.has(keyStr)) {
-            indexData.hashMap.set(keyStr, new Set());
-          }
-          indexData.hashMap.get(keyStr)!.add(doc._id.toHexString());
-
-          // Add to B-tree
-          const existing = indexData.btree.get(keyValue);
-          if (existing) {
-            existing.add(doc._id.toHexString());
-          } else {
-            indexData.btree.set(keyValue, new Set([doc._id.toHexString()]));
-          }
-        }
-      }
-
-      this.indexes.set(indexSpec.name, indexData);
-    }
-
-    this.initialized = true;
-  }
-
-  /**
-   * Create a new index
-   */
-  async createIndex(
-    key: Record<string, 1 | -1 | 'text' | '2dsphere'>,
-    options?: ICreateIndexOptions
-  ): Promise<string> {
-    await this.initialize();
-
-    // Generate index name if not provided
-    const name = options?.name || this.generateIndexName(key);
-
-    // Check if index already exists
-    if (this.indexes.has(name)) {
-      return name;
-    }
-
-    // Create index data structure
-    const indexData: IIndexData = {
-      name,
-      key: key as Record<string, 1 | -1 | string>,
-      unique: options?.unique || false,
-      sparse: options?.sparse || false,
-      expireAfterSeconds: options?.expireAfterSeconds,
-      btree: new SimpleBTree<any, Set<string>>(undefined, indexKeyComparator),
-      hashMap: new Map(),
-    };
-
-    // Build index from existing documents
-    const documents = await this.storage.findAll(this.dbName, this.collName);
-
-    for (const doc of documents) {
-      const keyValue = this.extractKeyValue(doc, key);
-
-      if (keyValue === null && indexData.sparse) {
-        continue;
-      }
-
-      const keyStr = JSON.stringify(keyValue);
-
-      if (indexData.unique && indexData.hashMap.has(keyStr)) {
-        throw new TsmdbDuplicateKeyError(
-          `E11000 duplicate key error index: ${this.dbName}.${this.collName}.$${name}`,
-          key as Record<string, 1>,
-          keyValue
-        );
-      }
-
-      // Add to hash map
-      if (!indexData.hashMap.has(keyStr)) {
-        indexData.hashMap.set(keyStr, new Set());
-      }
-      indexData.hashMap.get(keyStr)!.add(doc._id.toHexString());
-
-      // Add to B-tree
-      const existing = indexData.btree.get(keyValue);
-      if (existing) {
-        existing.add(doc._id.toHexString());
-      } else {
-        indexData.btree.set(keyValue, new Set([doc._id.toHexString()]));
-      }
-    }
-
-    // Store index
-    this.indexes.set(name, indexData);
-    await this.storage.saveIndex(this.dbName, this.collName, name, {
-      key,
-      unique: options?.unique,
-      sparse: options?.sparse,
-      expireAfterSeconds: options?.expireAfterSeconds,
-    });
-
-    return name;
-  }
-
-  /**
-   * Drop an index
-   */
-  async dropIndex(name: string): Promise<void> {
-    await this.initialize();
-
-    if (name === '_id_') {
-      throw new TsmdbIndexError('cannot drop _id index');
-    }
-
-    if (!this.indexes.has(name)) {
-      throw new TsmdbIndexError(`index not found: ${name}`);
-    }
-
-    this.indexes.delete(name);
-    await this.storage.dropIndex(this.dbName, this.collName, name);
-  }
-
-  /**
-   * Drop all indexes except _id
-   */
-  async dropAllIndexes(): Promise<void> {
-    await this.initialize();
-
-    const names = Array.from(this.indexes.keys()).filter(n => n !== '_id_');
-    for (const name of names) {
-      this.indexes.delete(name);
-      await this.storage.dropIndex(this.dbName, this.collName, name);
-    }
-  }
-
-  /**
-   * List all indexes
-   */
-  async listIndexes(): Promise<IIndexInfo[]> {
-    await this.initialize();
-
-    return Array.from(this.indexes.values()).map(idx => ({
-      v: 2,
-      key: idx.key,
-      name: idx.name,
-      unique: idx.unique || undefined,
-      sparse: idx.sparse || undefined,
-      expireAfterSeconds: idx.expireAfterSeconds,
-    }));
-  }
-
-  /**
-   * Check if an index exists
-   */
-  async indexExists(name: string): Promise<boolean> {
-    await this.initialize();
-    return this.indexes.has(name);
-  }
-
-  /**
-   * Update index entries after document insert
-   */
-  async onInsert(doc: IStoredDocument): Promise<void> {
-    await this.initialize();
-
-    for (const [name, indexData] of this.indexes) {
-      const keyValue = this.extractKeyValue(doc, indexData.key);
-
-      if (keyValue === null && indexData.sparse) {
-        continue;
-      }
-
-      const keyStr = JSON.stringify(keyValue);
-
-      // Check unique constraint
-      if (indexData.unique) {
-        const existing = indexData.hashMap.get(keyStr);
-        if (existing && existing.size > 0) {
-          throw new TsmdbDuplicateKeyError(
-            `E11000 duplicate key error collection: ${this.dbName}.${this.collName} index: ${name}`,
-            indexData.key as Record<string, 1>,
-            keyValue
-          );
-        }
-      }
-
-      // Add to hash map
-      if (!indexData.hashMap.has(keyStr)) {
-        indexData.hashMap.set(keyStr, new Set());
-      }
-      indexData.hashMap.get(keyStr)!.add(doc._id.toHexString());
-
-      // Add to B-tree
-      const btreeSet = indexData.btree.get(keyValue);
-      if (btreeSet) {
-        btreeSet.add(doc._id.toHexString());
-      } else {
-        indexData.btree.set(keyValue, new Set([doc._id.toHexString()]));
-      }
-    }
-  }
-
-  /**
-   * Update index entries after document update
-   */
-  async onUpdate(oldDoc: IStoredDocument, newDoc: IStoredDocument): Promise<void> {
-    await this.initialize();
-
-    for (const [name, indexData] of this.indexes) {
-      const oldKeyValue = this.extractKeyValue(oldDoc, indexData.key);
-      const newKeyValue = this.extractKeyValue(newDoc, indexData.key);
-      const oldKeyStr = JSON.stringify(oldKeyValue);
-      const newKeyStr = JSON.stringify(newKeyValue);
-
-      // Remove old entry if key changed
-      if (oldKeyStr !== newKeyStr) {
-        if (oldKeyValue !== null || !indexData.sparse) {
-          // Remove from hash map
-          const oldHashSet = indexData.hashMap.get(oldKeyStr);
-          if (oldHashSet) {
-            oldHashSet.delete(oldDoc._id.toHexString());
-            if (oldHashSet.size === 0) {
-              indexData.hashMap.delete(oldKeyStr);
-            }
-          }
-
-          // Remove from B-tree
-          const oldBtreeSet = indexData.btree.get(oldKeyValue);
-          if (oldBtreeSet) {
-            oldBtreeSet.delete(oldDoc._id.toHexString());
-            if (oldBtreeSet.size === 0) {
-              indexData.btree.delete(oldKeyValue);
-            }
-          }
-        }
-
-        // Add new entry
-        if (newKeyValue !== null || !indexData.sparse) {
-          // Check unique constraint
-          if (indexData.unique) {
-            const existing = indexData.hashMap.get(newKeyStr);
-            if (existing && existing.size > 0) {
-              throw new TsmdbDuplicateKeyError(
-                `E11000 duplicate key error collection: ${this.dbName}.${this.collName} index: ${name}`,
-                indexData.key as Record<string, 1>,
-                newKeyValue
-              );
-            }
-          }
-
-          // Add to hash map
-          if (!indexData.hashMap.has(newKeyStr)) {
-            indexData.hashMap.set(newKeyStr, new Set());
-          }
-          indexData.hashMap.get(newKeyStr)!.add(newDoc._id.toHexString());
-
-          // Add to B-tree
-          const newBtreeSet = indexData.btree.get(newKeyValue);
-          if (newBtreeSet) {
-            newBtreeSet.add(newDoc._id.toHexString());
-          } else {
-            indexData.btree.set(newKeyValue, new Set([newDoc._id.toHexString()]));
-          }
-        }
-      }
-    }
-  }
-
-  /**
-   * Update index entries after document delete
-   */
-  async onDelete(doc: IStoredDocument): Promise<void> {
-    await this.initialize();
-
-    for (const indexData of this.indexes.values()) {
-      const keyValue = this.extractKeyValue(doc, indexData.key);
-
-      if (keyValue === null && indexData.sparse) {
-        continue;
-      }
-
-      const keyStr = JSON.stringify(keyValue);
-
-      // Remove from hash map
-      const hashSet = indexData.hashMap.get(keyStr);
-      if (hashSet) {
-        hashSet.delete(doc._id.toHexString());
-        if (hashSet.size === 0) {
-          indexData.hashMap.delete(keyStr);
-        }
-      }
-
-      // Remove from B-tree
-      const btreeSet = indexData.btree.get(keyValue);
-      if (btreeSet) {
-        btreeSet.delete(doc._id.toHexString());
-        if (btreeSet.size === 0) {
-          indexData.btree.delete(keyValue);
-        }
-      }
-    }
-  }
-
-  /**
-   * Find the best index for a query
-   */
-  selectIndex(filter: Document): { name: string; data: IIndexData } | null {
-    if (!filter || Object.keys(filter).length === 0) {
-      return null;
-    }
-
-    // Get filter fields and operators
-    const filterInfo = this.analyzeFilter(filter);
-
-    // Score each index
-    let bestIndex: { name: string; data: IIndexData } | null = null;
-    let bestScore = 0;
-
-    for (const [name, indexData] of this.indexes) {
-      const indexFields = Object.keys(indexData.key);
-      let score = 0;
-
-      // Count how many index fields can be used
-      for (const field of indexFields) {
-        const info = filterInfo.get(field);
-        if (!info) break;
-
-        // Equality is best
-        if (info.equality) {
-          score += 2;
-        } else if (info.range) {
-          // Range queries can use B-tree
-          score += 1;
-        } else if (info.in) {
-          score += 1.5;
-        } else {
-          break;
-        }
-      }
-
-      // Prefer unique indexes
-      if (indexData.unique && score > 0) {
-        score += 0.5;
-      }
-
-      if (score > bestScore) {
-        bestScore = score;
-        bestIndex = { name, data: indexData };
-      }
-    }
-
-    return bestIndex;
-  }
-
-  /**
-   * Analyze filter to extract field operators
-   */
-  private analyzeFilter(filter: Document): Map<string, { equality: boolean; range: boolean; in: boolean; ops: Record<string, any> }> {
-    const result = new Map<string, { equality: boolean; range: boolean; in: boolean; ops: Record<string, any> }>();
-
-    for (const [key, value] of Object.entries(filter)) {
-      if (key.startsWith('$')) continue;
-
-      const info = { equality: false, range: false, in: false, ops: {} as Record<string, any> };
-
-      if (typeof value !== 'object' || value === null || value instanceof plugins.bson.ObjectId || value instanceof Date) {
-        info.equality = true;
-        info.ops['$eq'] = value;
-      } else {
-        const ops = value as Record<string, any>;
-        if (ops.$eq !== undefined) {
-          info.equality = true;
-          info.ops['$eq'] = ops.$eq;
-        }
-        if (ops.$in !== undefined) {
-          info.in = true;
-          info.ops['$in'] = ops.$in;
-        }
-        if (ops.$gt !== undefined || ops.$gte !== undefined || ops.$lt !== undefined || ops.$lte !== undefined) {
-          info.range = true;
-          if (ops.$gt !== undefined) info.ops['$gt'] = ops.$gt;
-          if (ops.$gte !== undefined) info.ops['$gte'] = ops.$gte;
-          if (ops.$lt !== undefined) info.ops['$lt'] = ops.$lt;
-          if (ops.$lte !== undefined) info.ops['$lte'] = ops.$lte;
-        }
-      }
-
-      result.set(key, info);
-    }
-
-    return result;
-  }
-
-  /**
-   * Use index to find candidate document IDs (supports range queries with B-tree)
-   */
-  async findCandidateIds(filter: Document): Promise<Set<string> | null> {
-    await this.initialize();
-
-    const index = this.selectIndex(filter);
-    if (!index) return null;
-
-    const filterInfo = this.analyzeFilter(filter);
-    const indexFields = Object.keys(index.data.key);
-
-    // For single-field indexes with range queries, use B-tree
-    if (indexFields.length === 1) {
-      const field = indexFields[0];
-      const info = filterInfo.get(field);
-
-      if (info) {
-        // Handle equality using hash map (faster)
-        if (info.equality) {
-          const keyStr = JSON.stringify(info.ops['$eq']);
-          return index.data.hashMap.get(keyStr) || new Set();
-        }
-
-        // Handle $in using hash map
-        if (info.in) {
-          const results = new Set<string>();
-          for (const val of info.ops['$in']) {
-            const keyStr = JSON.stringify(val);
-            const ids = index.data.hashMap.get(keyStr);
-            if (ids) {
-              for (const id of ids) {
-                results.add(id);
-              }
-            }
-          }
-          return results;
-        }
-
-        // Handle range queries using B-tree
-        if (info.range) {
-          return this.findRangeCandidates(index.data, info.ops);
-        }
-      }
-    } else {
-      // For compound indexes, use hash map with partial key matching
-      const equalityValues: Record<string, any> = {};
-
-      for (const field of indexFields) {
-        const info = filterInfo.get(field);
-        if (!info) break;
-
-        if (info.equality) {
-          equalityValues[field] = info.ops['$eq'];
-        } else if (info.in) {
-          // Handle $in with multiple lookups
-          const results = new Set<string>();
-          for (const val of info.ops['$in']) {
-            equalityValues[field] = val;
-            const keyStr = JSON.stringify(this.buildKeyValue(equalityValues, index.data.key));
-            const ids = index.data.hashMap.get(keyStr);
-            if (ids) {
-              for (const id of ids) {
-                results.add(id);
-              }
-            }
-          }
-          return results;
-        } else {
-          break; // Non-equality/in operator, stop here
-        }
-      }
-
-      if (Object.keys(equalityValues).length > 0) {
-        const keyStr = JSON.stringify(this.buildKeyValue(equalityValues, index.data.key));
-        return index.data.hashMap.get(keyStr) || new Set();
-      }
-    }
-
-    return null;
-  }
-
-  /**
-   * Find candidates using B-tree range scan
-   */
-  private findRangeCandidates(indexData: IIndexData, ops: Record<string, any>): Set<string> {
-    const results = new Set<string>();
-
-    let lowKey: any = undefined;
-    let highKey: any = undefined;
-    let lowInclusive = true;
-    let highInclusive = true;
-
-    if (ops['$gt'] !== undefined) {
-      lowKey = ops['$gt'];
-      lowInclusive = false;
-    }
-    if (ops['$gte'] !== undefined) {
-      lowKey = ops['$gte'];
-      lowInclusive = true;
-    }
-    if (ops['$lt'] !== undefined) {
-      highKey = ops['$lt'];
-      highInclusive = false;
-    }
-    if (ops['$lte'] !== undefined) {
-      highKey = ops['$lte'];
-      highInclusive = true;
-    }
-
-    // Use B-tree range iteration
-    indexData.btree.forRange(lowKey, highKey, lowInclusive, highInclusive, (value, key) => {
-      if (value) {
-        for (const id of value) {
-          results.add(id);
-        }
-      }
-    });
-
-    return results;
-  }
-
-  // ============================================================================
-  // Helper Methods
-  // ============================================================================
-
-  private generateIndexName(key: Record<string, any>): string {
-    return Object.entries(key)
-      .map(([field, dir]) => `${field}_${dir}`)
-      .join('_');
-  }
-
-  private extractKeyValue(doc: Document, key: Record<string, any>): any {
-    const values: any[] = [];
-
-    for (const field of Object.keys(key)) {
-      const value = QueryEngine.getNestedValue(doc, field);
-      values.push(value === undefined ? null : value);
-    }
-
-    // For single-field index, return the value directly
-    if (values.length === 1) {
-      return values[0];
-    }
-
-    return values;
-  }
-
-  private buildKeyValue(values: Record<string, any>, key: Record<string, any>): any {
-    const result: any[] = [];
-
-    for (const field of Object.keys(key)) {
-      result.push(values[field] !== undefined ? values[field] : null);
-    }
-
-    if (result.length === 1) {
-      return result[0];
-    }
-
-    return result;
-  }
-
-  private getFilterFields(filter: Document, prefix = ''): string[] {
-    const fields: string[] = [];
-
-    for (const [key, value] of Object.entries(filter)) {
-      if (key.startsWith('$')) {
-        // Logical operator
-        if (key === '$and' || key === '$or' || key === '$nor') {
-          for (const subFilter of value as Document[]) {
-            fields.push(...this.getFilterFields(subFilter, prefix));
-          }
-        }
-      } else {
-        const fullKey = prefix ? `${prefix}.${key}` : key;
-        fields.push(fullKey);
-
-        // Check for nested filters
-        if (typeof value === 'object' && value !== null && !Array.isArray(value)) {
-          const subKeys = Object.keys(value);
-          if (subKeys.length > 0 && !subKeys[0].startsWith('$')) {
-            fields.push(...this.getFilterFields(value, fullKey));
-          }
-        }
-      }
-    }
-
-    return fields;
-  }
-
-  private getFilterValue(filter: Document, field: string): any {
-    // Handle dot notation
-    const parts = field.split('.');
-    let current: any = filter;
-
-    for (const part of parts) {
-      if (current === null || current === undefined) {
-        return undefined;
-      }
-      current = current[part];
-    }
-
-    return current;
-  }
-}

ts/ts_tsmdb/engine/QueryEngine.ts

@@ -1,301 +0,0 @@
-import * as plugins from '../plugins.js';
-import type { Document, IStoredDocument, ISortSpecification, ISortDirection } from '../types/interfaces.js';
-
-// Import mingo Query class
-import { Query } from 'mingo';
-
-/**
- * Query engine using mingo for MongoDB-compatible query matching
- */
-export class QueryEngine {
-  /**
-   * Filter documents by a MongoDB query filter
-   */
-  static filter(documents: IStoredDocument[], filter: Document): IStoredDocument[] {
-    if (!filter || Object.keys(filter).length === 0) {
-      return documents;
-    }
-
-    const query = new Query(filter);
-    return documents.filter(doc => query.test(doc));
-  }
-
-  /**
-   * Test if a single document matches a filter
-   */
-  static matches(document: Document, filter: Document): boolean {
-    if (!filter || Object.keys(filter).length === 0) {
-      return true;
-    }
-
-    const query = new Query(filter);
-    return query.test(document);
-  }
-
-  /**
-   * Find a single document matching the filter
-   */
-  static findOne(documents: IStoredDocument[], filter: Document): IStoredDocument | null {
-    if (!filter || Object.keys(filter).length === 0) {
-      return documents[0] || null;
-    }
-
-    const query = new Query(filter);
-    for (const doc of documents) {
-      if (query.test(doc)) {
-        return doc;
-      }
-    }
-    return null;
-  }
-
-  /**
-   * Sort documents by a sort specification
-   */
-  static sort(documents: IStoredDocument[], sort: ISortSpecification): IStoredDocument[] {
-    if (!sort) {
-      return documents;
-    }
-
-    // Normalize sort specification to array of [field, direction] pairs
-    const sortFields: Array<[string, number]> = [];
-
-    if (Array.isArray(sort)) {
-      for (const [field, direction] of sort) {
-        sortFields.push([field, this.normalizeDirection(direction)]);
-      }
-    } else {
-      for (const [field, direction] of Object.entries(sort)) {
-        sortFields.push([field, this.normalizeDirection(direction)]);
-      }
-    }
-
-    return [...documents].sort((a, b) => {
-      for (const [field, direction] of sortFields) {
-        const aVal = this.getNestedValue(a, field);
-        const bVal = this.getNestedValue(b, field);
-
-        const comparison = this.compareValues(aVal, bVal);
-        if (comparison !== 0) {
-          return comparison * direction;
-        }
-      }
-      return 0;
-    });
-  }
-
-  /**
-   * Apply projection to documents
-   */
-  static project(documents: IStoredDocument[], projection: Document): Document[] {
-    if (!projection || Object.keys(projection).length === 0) {
-      return documents;
-    }
-
-    // Determine if this is inclusion or exclusion projection
-    const keys = Object.keys(projection);
-    const hasInclusion = keys.some(k => k !== '_id' && projection[k] === 1);
-    const hasExclusion = keys.some(k => k !== '_id' && projection[k] === 0);
-
-    // Can't mix inclusion and exclusion (except for _id)
-    if (hasInclusion && hasExclusion) {
-      throw new Error('Cannot mix inclusion and exclusion in projection');
-    }
-
-    return documents.map(doc => {
-      if (hasInclusion) {
-        // Inclusion projection
-        const result: Document = {};
-
-        // Handle _id
-        if (projection._id !== 0 && projection._id !== false) {
-          result._id = doc._id;
-        }
-
-        for (const key of keys) {
-          if (key === '_id') continue;
-          if (projection[key] === 1 || projection[key] === true) {
-            const value = this.getNestedValue(doc, key);
-            if (value !== undefined) {
-              this.setNestedValue(result, key, value);
-            }
-          }
-        }
-
-        return result;
-      } else {
-        // Exclusion projection - start with copy and remove fields
-        const result = { ...doc };
-
-        for (const key of keys) {
-          if (projection[key] === 0 || projection[key] === false) {
-            this.deleteNestedValue(result, key);
-          }
-        }
-
-        return result;
-      }
-    });
-  }
-
-  /**
-   * Get distinct values for a field
-   */
-  static distinct(documents: IStoredDocument[], field: string, filter?: Document): any[] {
-    let docs = documents;
-    if (filter && Object.keys(filter).length > 0) {
-      docs = this.filter(documents, filter);
-    }
-
-    const values = new Set<any>();
-    for (const doc of docs) {
-      const value = this.getNestedValue(doc, field);
-      if (value !== undefined) {
-        if (Array.isArray(value)) {
-          // For arrays, add each element
-          for (const v of value) {
-            values.add(this.toComparable(v));
-          }
-        } else {
-          values.add(this.toComparable(value));
-        }
-      }
-    }
-
-    return Array.from(values);
-  }
-
-  /**
-   * Normalize sort direction to 1 or -1
-   */
-  private static normalizeDirection(direction: ISortDirection): number {
-    if (typeof direction === 'number') {
-      return direction > 0 ? 1 : -1;
-    }
-    if (direction === 'asc' || direction === 'ascending') {
-      return 1;
-    }
-    return -1;
-  }
-
-  /**
-   * Get a nested value from an object using dot notation
-   */
-  static getNestedValue(obj: any, path: string): any {
-    const parts = path.split('.');
-    let current = obj;
-
-    for (const part of parts) {
-      if (current === null || current === undefined) {
-        return undefined;
-      }
-      if (Array.isArray(current)) {
-        // Handle array access
-        const index = parseInt(part, 10);
-        if (!isNaN(index)) {
-          current = current[index];
-        } else {
-          // Get the field from all array elements
-          return current.map(item => this.getNestedValue(item, part)).flat();
-        }
-      } else {
-        current = current[part];
-      }
-    }
-
-    return current;
-  }
-
-  /**
-   * Set a nested value in an object using dot notation
-   */
-  private static setNestedValue(obj: any, path: string, value: any): void {
-    const parts = path.split('.');
-    let current = obj;
-
-    for (let i = 0; i < parts.length - 1; i++) {
-      const part = parts[i];
-      if (!(part in current)) {
-        current[part] = {};
-      }
-      current = current[part];
-    }
-
-    current[parts[parts.length - 1]] = value;
-  }
-
-  /**
-   * Delete a nested value from an object using dot notation
-   */
-  private static deleteNestedValue(obj: any, path: string): void {
-    const parts = path.split('.');
-    let current = obj;
-
-    for (let i = 0; i < parts.length - 1; i++) {
-      const part = parts[i];
-      if (!(part in current)) {
-        return;
-      }
-      current = current[part];
-    }
-
-    delete current[parts[parts.length - 1]];
-  }
-
-  /**
-   * Compare two values for sorting
-   */
-  private static compareValues(a: any, b: any): number {
-    // Handle undefined/null
-    if (a === undefined && b === undefined) return 0;
-    if (a === undefined) return -1;
-    if (b === undefined) return 1;
-    if (a === null && b === null) return 0;
-    if (a === null) return -1;
-    if (b === null) return 1;
-
-    // Handle ObjectId
-    if (a instanceof plugins.bson.ObjectId && b instanceof plugins.bson.ObjectId) {
-      return a.toHexString().localeCompare(b.toHexString());
-    }
-
-    // Handle dates
-    if (a instanceof Date && b instanceof Date) {
-      return a.getTime() - b.getTime();
-    }
-
-    // Handle numbers
-    if (typeof a === 'number' && typeof b === 'number') {
-      return a - b;
-    }
-
-    // Handle strings
-    if (typeof a === 'string' && typeof b === 'string') {
-      return a.localeCompare(b);
-    }
-
-    // Handle booleans
-    if (typeof a === 'boolean' && typeof b === 'boolean') {
-      return (a ? 1 : 0) - (b ? 1 : 0);
-    }
-
-    // Fall back to string comparison
-    return String(a).localeCompare(String(b));
-  }
-
-  /**
-   * Convert a value to a comparable form (for distinct)
-   */
-  private static toComparable(value: any): any {
-    if (value instanceof plugins.bson.ObjectId) {
-      return value.toHexString();
-    }
-    if (value instanceof Date) {
-      return value.toISOString();
-    }
-    if (typeof value === 'object' && value !== null) {
-      return JSON.stringify(value);
-    }
-    return value;
-  }
-}

ts/ts_tsmdb/engine/QueryPlanner.ts

@@ -1,393 +0,0 @@
-import * as plugins from '../plugins.js';
-import type { Document, IStoredDocument } from '../types/interfaces.js';
-import { IndexEngine } from './IndexEngine.js';
-
-/**
- * Query execution plan types
- */
-export type TQueryPlanType = 'IXSCAN' | 'COLLSCAN' | 'FETCH' | 'IXSCAN_RANGE';
-
-/**
- * Represents a query execution plan
- */
-export interface IQueryPlan {
-  /** The type of scan used */
-  type: TQueryPlanType;
-  /** Index name if using an index */
-  indexName?: string;
-  /** Index key specification */
-  indexKey?: Record<string, 1 | -1 | string>;
-  /** Whether the query can be fully satisfied by the index */
-  indexCovering: boolean;
-  /** Estimated selectivity (0-1, lower is more selective) */
-  selectivity: number;
-  /** Whether range operators are used */
-  usesRange: boolean;
-  /** Fields used from the index */
-  indexFieldsUsed: string[];
-  /** Filter conditions that must be applied post-index lookup */
-  residualFilter?: Document;
-  /** Explanation for debugging */
-  explanation: string;
-}
-
-/**
- * Filter operator analysis
- */
-interface IFilterOperatorInfo {
-  field: string;
-  operators: string[];
-  equality: boolean;
-  range: boolean;
-  in: boolean;
-  exists: boolean;
-  regex: boolean;
-  values: Record<string, any>;
-}
-
-/**
- * QueryPlanner - Analyzes queries and selects optimal execution plans
- */
-export class QueryPlanner {
-  private indexEngine: IndexEngine;
-
-  constructor(indexEngine: IndexEngine) {
-    this.indexEngine = indexEngine;
-  }
-
-  /**
-   * Generate an execution plan for a query filter
-   */
-  async plan(filter: Document): Promise<IQueryPlan> {
-    await this.indexEngine['initialize']();
-
-    // Empty filter = full collection scan
-    if (!filter || Object.keys(filter).length === 0) {
-      return {
-        type: 'COLLSCAN',
-        indexCovering: false,
-        selectivity: 1.0,
-        usesRange: false,
-        indexFieldsUsed: [],
-        explanation: 'No filter specified, full collection scan required',
-      };
-    }
-
-    // Analyze the filter
-    const operatorInfo = this.analyzeFilter(filter);
-
-    // Get available indexes
-    const indexes = await this.indexEngine.listIndexes();
-
-    // Score each index
-    let bestPlan: IQueryPlan | null = null;
-    let bestScore = -1;
-
-    for (const index of indexes) {
-      const plan = this.scoreIndex(index, operatorInfo, filter);
-      if (plan.selectivity < 1.0) {
-        const score = this.calculateScore(plan);
-        if (score > bestScore) {
-          bestScore = score;
-          bestPlan = plan;
-        }
-      }
-    }
-
-    // If no suitable index found, fall back to collection scan
-    if (!bestPlan || bestScore <= 0) {
-      return {
-        type: 'COLLSCAN',
-        indexCovering: false,
-        selectivity: 1.0,
-        usesRange: false,
-        indexFieldsUsed: [],
-        explanation: 'No suitable index found for this query',
-      };
-    }
-
-    return bestPlan;
-  }
-
-  /**
-   * Analyze filter to extract operator information per field
-   */
-  private analyzeFilter(filter: Document, prefix = ''): Map<string, IFilterOperatorInfo> {
-    const result = new Map<string, IFilterOperatorInfo>();
-
-    for (const [key, value] of Object.entries(filter)) {
-      // Skip logical operators at the top level
-      if (key.startsWith('$')) {
-        if (key === '$and' && Array.isArray(value)) {
-          // Merge $and conditions
-          for (const subFilter of value) {
-            const subInfo = this.analyzeFilter(subFilter, prefix);
-            for (const [field, info] of subInfo) {
-              if (result.has(field)) {
-                // Merge operators
-                const existing = result.get(field)!;
-                existing.operators.push(...info.operators);
-                existing.equality = existing.equality || info.equality;
-                existing.range = existing.range || info.range;
-                existing.in = existing.in || info.in;
-                Object.assign(existing.values, info.values);
-              } else {
-                result.set(field, info);
-              }
-            }
-          }
-        }
-        continue;
-      }
-
-      const fullKey = prefix ? `${prefix}.${key}` : key;
-      const info: IFilterOperatorInfo = {
-        field: fullKey,
-        operators: [],
-        equality: false,
-        range: false,
-        in: false,
-        exists: false,
-        regex: false,
-        values: {},
-      };
-
-      if (typeof value !== 'object' || value === null || value instanceof plugins.bson.ObjectId || value instanceof Date) {
-        // Direct equality
-        info.equality = true;
-        info.operators.push('$eq');
-        info.values['$eq'] = value;
-      } else if (Array.isArray(value)) {
-        // Array equality (rare, but possible)
-        info.equality = true;
-        info.operators.push('$eq');
-        info.values['$eq'] = value;
-      } else {
-        // Operator object
-        for (const [op, opValue] of Object.entries(value)) {
-          if (op.startsWith('$')) {
-            info.operators.push(op);
-            info.values[op] = opValue;
-
-            switch (op) {
-              case '$eq':
-                info.equality = true;
-                break;
-              case '$ne':
-              case '$not':
-                // These can use indexes but with low selectivity
-                break;
-              case '$in':
-                info.in = true;
-                break;
-              case '$nin':
-                // Can't efficiently use indexes
-                break;
-              case '$gt':
-              case '$gte':
-              case '$lt':
-              case '$lte':
-                info.range = true;
-                break;
-              case '$exists':
-                info.exists = true;
-                break;
-              case '$regex':
-                info.regex = true;
-                break;
-            }
-          } else {
-            // Nested object - recurse
-            const nestedInfo = this.analyzeFilter({ [op]: opValue }, fullKey);
-            for (const [nestedField, nestedFieldInfo] of nestedInfo) {
-              result.set(nestedField, nestedFieldInfo);
-            }
-          }
-        }
-      }
-
-      if (info.operators.length > 0) {
-        result.set(fullKey, info);
-      }
-    }
-
-    return result;
-  }
-
-  /**
-   * Score an index for the given filter
-   */
-  private scoreIndex(
-    index: { name: string; key: Record<string, any>; unique?: boolean; sparse?: boolean },
-    operatorInfo: Map<string, IFilterOperatorInfo>,
-    filter: Document
-  ): IQueryPlan {
-    const indexFields = Object.keys(index.key);
-    const usedFields: string[] = [];
-    let usesRange = false;
-    let canUseIndex = true;
-    let selectivity = 1.0;
-    let residualFilter: Document | undefined;
-
-    // Check each index field in order
-    for (const field of indexFields) {
-      const info = operatorInfo.get(field);
-      if (!info) {
-        // Index field not in filter - stop here
-        break;
-      }
-
-      usedFields.push(field);
-
-      // Calculate selectivity based on operator
-      if (info.equality) {
-        // Equality has high selectivity
-        selectivity *= 0.01; // Assume 1% match
-      } else if (info.in) {
-        // $in selectivity depends on array size
-        const inValues = info.values['$in'];
-        if (Array.isArray(inValues)) {
-          selectivity *= Math.min(0.5, inValues.length * 0.01);
-        } else {
-          selectivity *= 0.1;
-        }
-      } else if (info.range) {
-        // Range queries have moderate selectivity
-        selectivity *= 0.25;
-        usesRange = true;
-        // After range, can't use more index fields efficiently
-        break;
-      } else if (info.exists) {
-        // $exists can use sparse indexes
-        selectivity *= 0.5;
-      } else {
-        // Other operators may not be indexable
-        canUseIndex = false;
-        break;
-      }
-    }
-
-    if (!canUseIndex || usedFields.length === 0) {
-      return {
-        type: 'COLLSCAN',
-        indexCovering: false,
-        selectivity: 1.0,
-        usesRange: false,
-        indexFieldsUsed: [],
-        explanation: `Index ${index.name} cannot be used for this query`,
-      };
-    }
-
-    // Build residual filter for conditions not covered by index
-    const coveredFields = new Set(usedFields);
-    const residualConditions: Record<string, any> = {};
-    for (const [field, info] of operatorInfo) {
-      if (!coveredFields.has(field)) {
-        // This field isn't covered by the index
-        if (info.equality) {
-          residualConditions[field] = info.values['$eq'];
-        } else {
-          residualConditions[field] = info.values;
-        }
-      }
-    }
-
-    if (Object.keys(residualConditions).length > 0) {
-      residualFilter = residualConditions;
-    }
-
-    // Unique indexes have better selectivity for equality
-    if (index.unique && usedFields.length === indexFields.length) {
-      selectivity = Math.min(selectivity, 0.001); // At most 1 document
-    }
-
-    return {
-      type: usesRange ? 'IXSCAN_RANGE' : 'IXSCAN',
-      indexName: index.name,
-      indexKey: index.key,
-      indexCovering: Object.keys(residualConditions).length === 0,
-      selectivity,
-      usesRange,
-      indexFieldsUsed: usedFields,
-      residualFilter,
-      explanation: `Using index ${index.name} on fields [${usedFields.join(', ')}]`,
-    };
-  }
-
-  /**
-   * Calculate overall score for a plan (higher is better)
-   */
-  private calculateScore(plan: IQueryPlan): number {
-    let score = 0;
-
-    // Lower selectivity is better (fewer documents to fetch)
-    score += (1 - plan.selectivity) * 100;
-
-    // Index covering queries are best
-    if (plan.indexCovering) {
-      score += 50;
-    }
-
-    // More index fields used is better
-    score += plan.indexFieldsUsed.length * 10;
-
-    // Equality scans are better than range scans
-    if (!plan.usesRange) {
-      score += 20;
-    }
-
-    return score;
-  }
-
-  /**
-   * Explain a query - returns detailed plan information
-   */
-  async explain(filter: Document): Promise<{
-    queryPlanner: {
-      plannerVersion: number;
-      namespace: string;
-      indexFilterSet: boolean;
-      winningPlan: IQueryPlan;
-      rejectedPlans: IQueryPlan[];
-    };
-  }> {
-    await this.indexEngine['initialize']();
-
-    // Analyze the filter
-    const operatorInfo = this.analyzeFilter(filter);
-
-    // Get available indexes
-    const indexes = await this.indexEngine.listIndexes();
-
-    // Score all indexes
-    const plans: IQueryPlan[] = [];
-
-    for (const index of indexes) {
-      const plan = this.scoreIndex(index, operatorInfo, filter);
-      plans.push(plan);
-    }
-
-    // Add collection scan as fallback
-    plans.push({
-      type: 'COLLSCAN',
-      indexCovering: false,
-      selectivity: 1.0,
-      usesRange: false,
-      indexFieldsUsed: [],
-      explanation: 'Full collection scan',
-    });
-
-    // Sort by score (best first)
-    plans.sort((a, b) => this.calculateScore(b) - this.calculateScore(a));
-
-    return {
-      queryPlanner: {
-        plannerVersion: 1,
-        namespace: `${this.indexEngine['dbName']}.${this.indexEngine['collName']}`,
-        indexFilterSet: false,
-        winningPlan: plans[0],
-        rejectedPlans: plans.slice(1),
-      },
-    };
-  }
-}

ts/ts_tsmdb/engine/SessionEngine.ts

@@ -1,292 +0,0 @@
-import * as plugins from '../plugins.js';
-import type { TransactionEngine } from './TransactionEngine.js';
-
-/**
- * Session state
- */
-export interface ISession {
-  /** Session ID (UUID) */
-  id: string;
-  /** Timestamp when the session was created */
-  createdAt: number;
-  /** Timestamp of the last activity */
-  lastActivityAt: number;
-  /** Current transaction ID if any */
-  txnId?: string;
-  /** Transaction number for ordering */
-  txnNumber?: number;
-  /** Whether the session is in a transaction */
-  inTransaction: boolean;
-  /** Session metadata */
-  metadata?: Record<string, any>;
-}
-
-/**
- * Session engine options
- */
-export interface ISessionEngineOptions {
-  /** Session timeout in milliseconds (default: 30 minutes) */
-  sessionTimeoutMs?: number;
-  /** Interval to check for expired sessions in ms (default: 60 seconds) */
-  cleanupIntervalMs?: number;
-}
-
-/**
- * Session engine for managing client sessions
- * - Tracks session lifecycle (create, touch, end)
- * - Links sessions to transactions
- * - Auto-aborts transactions on session expiry
- */
-export class SessionEngine {
-  private sessions: Map<string, ISession> = new Map();
-  private sessionTimeoutMs: number;
-  private cleanupInterval?: ReturnType<typeof setInterval>;
-  private transactionEngine?: TransactionEngine;
-
-  constructor(options?: ISessionEngineOptions) {
-    this.sessionTimeoutMs = options?.sessionTimeoutMs ?? 30 * 60 * 1000; // 30 minutes default
-    const cleanupIntervalMs = options?.cleanupIntervalMs ?? 60 * 1000; // 1 minute default
-
-    // Start cleanup interval
-    this.cleanupInterval = setInterval(() => {
-      this.cleanupExpiredSessions();
-    }, cleanupIntervalMs);
-  }
-
-  /**
-   * Set the transaction engine to use for auto-abort
-   */
-  setTransactionEngine(engine: TransactionEngine): void {
-    this.transactionEngine = engine;
-  }
-
-  /**
-   * Start a new session
-   */
-  startSession(sessionId?: string, metadata?: Record<string, any>): ISession {
-    const id = sessionId ?? new plugins.bson.UUID().toHexString();
-    const now = Date.now();
-
-    const session: ISession = {
-      id,
-      createdAt: now,
-      lastActivityAt: now,
-      inTransaction: false,
-      metadata,
-    };
-
-    this.sessions.set(id, session);
-    return session;
-  }
-
-  /**
-   * Get a session by ID
-   */
-  getSession(sessionId: string): ISession | undefined {
-    const session = this.sessions.get(sessionId);
-    if (session && this.isSessionExpired(session)) {
-      // Session expired, clean it up
-      this.endSession(sessionId);
-      return undefined;
-    }
-    return session;
-  }
-
-  /**
-   * Touch a session to update last activity time
-   */
-  touchSession(sessionId: string): boolean {
-    const session = this.sessions.get(sessionId);
-    if (!session) return false;
-
-    if (this.isSessionExpired(session)) {
-      this.endSession(sessionId);
-      return false;
-    }
-
-    session.lastActivityAt = Date.now();
-    return true;
-  }
-
-  /**
-   * End a session explicitly
-   * This will also abort any active transaction
-   */
-  async endSession(sessionId: string): Promise<boolean> {
-    const session = this.sessions.get(sessionId);
-    if (!session) return false;
-
-    // If session has an active transaction, abort it
-    if (session.inTransaction && session.txnId && this.transactionEngine) {
-      try {
-        await this.transactionEngine.abortTransaction(session.txnId);
-      } catch (e) {
-        // Ignore abort errors during cleanup
-      }
-    }
-
-    this.sessions.delete(sessionId);
-    return true;
-  }
-
-  /**
-   * Start a transaction in a session
-   */
-  startTransaction(sessionId: string, txnId: string, txnNumber?: number): boolean {
-    const session = this.sessions.get(sessionId);
-    if (!session) return false;
-
-    if (this.isSessionExpired(session)) {
-      this.endSession(sessionId);
-      return false;
-    }
-
-    session.txnId = txnId;
-    session.txnNumber = txnNumber;
-    session.inTransaction = true;
-    session.lastActivityAt = Date.now();
-
-    return true;
-  }
-
-  /**
-   * End a transaction in a session (commit or abort)
-   */
-  endTransaction(sessionId: string): boolean {
-    const session = this.sessions.get(sessionId);
-    if (!session) return false;
-
-    session.txnId = undefined;
-    session.txnNumber = undefined;
-    session.inTransaction = false;
-    session.lastActivityAt = Date.now();
-
-    return true;
-  }
-
-  /**
-   * Get transaction ID for a session
-   */
-  getTransactionId(sessionId: string): string | undefined {
-    const session = this.sessions.get(sessionId);
-    return session?.txnId;
-  }
-
-  /**
-   * Check if session is in a transaction
-   */
-  isInTransaction(sessionId: string): boolean {
-    const session = this.sessions.get(sessionId);
-    return session?.inTransaction ?? false;
-  }
-
-  /**
-   * Check if a session is expired
-   */
-  isSessionExpired(session: ISession): boolean {
-    return Date.now() - session.lastActivityAt > this.sessionTimeoutMs;
-  }
-
-  /**
-   * Cleanup expired sessions
-   * This is called periodically by the cleanup interval
-   */
-  private async cleanupExpiredSessions(): Promise<void> {
-    const expiredSessions: string[] = [];
-
-    for (const [id, session] of this.sessions) {
-      if (this.isSessionExpired(session)) {
-        expiredSessions.push(id);
-      }
-    }
-
-    // End all expired sessions (this will also abort their transactions)
-    for (const sessionId of expiredSessions) {
-      await this.endSession(sessionId);
-    }
-  }
-
-  /**
-   * Get all active sessions
-   */
-  listSessions(): ISession[] {
-    const activeSessions: ISession[] = [];
-    for (const session of this.sessions.values()) {
-      if (!this.isSessionExpired(session)) {
-        activeSessions.push(session);
-      }
-    }
-    return activeSessions;
-  }
-
-  /**
-   * Get session count
-   */
-  getSessionCount(): number {
-    return this.sessions.size;
-  }
-
-  /**
-   * Get sessions with active transactions
-   */
-  getSessionsWithTransactions(): ISession[] {
-    return this.listSessions().filter(s => s.inTransaction);
-  }
-
-  /**
-   * Refresh session timeout
-   */
-  refreshSession(sessionId: string): boolean {
-    return this.touchSession(sessionId);
-  }
-
-  /**
-   * Close the session engine and cleanup
-   */
-  close(): void {
-    if (this.cleanupInterval) {
-      clearInterval(this.cleanupInterval);
-      this.cleanupInterval = undefined;
-    }
-
-    // Clear all sessions
-    this.sessions.clear();
-  }
-
-  /**
-   * Get or create a session for a given session ID
-   * Useful for handling MongoDB driver session requests
-   */
-  getOrCreateSession(sessionId: string): ISession {
-    let session = this.getSession(sessionId);
-    if (!session) {
-      session = this.startSession(sessionId);
-    } else {
-      this.touchSession(sessionId);
-    }
-    return session;
-  }
-
-  /**
-   * Extract session ID from MongoDB lsid (logical session ID)
-   */
-  static extractSessionId(lsid: any): string | undefined {
-    if (!lsid) return undefined;
-
-    // MongoDB session ID format: { id: UUID }
-    if (lsid.id) {
-      if (lsid.id instanceof plugins.bson.UUID) {
-        return lsid.id.toHexString();
-      }
-      if (typeof lsid.id === 'string') {
-        return lsid.id;
-      }
-      if (lsid.id.$binary?.base64) {
-        // Binary UUID format
-        return Buffer.from(lsid.id.$binary.base64, 'base64').toString('hex');
-      }
-    }
-
-    return undefined;
-  }
-}

ts/ts_tsmdb/engine/TransactionEngine.ts

@@ -1,351 +0,0 @@
-import * as plugins from '../plugins.js';
-import type { IStorageAdapter } from '../storage/IStorageAdapter.js';
-import type { Document, IStoredDocument, ITransactionOptions } from '../types/interfaces.js';
-import { TsmdbTransactionError, TsmdbWriteConflictError } from '../errors/TsmdbErrors.js';
-
-/**
- * Transaction state
- */
-export interface ITransactionState {
-  id: string;
-  sessionId: string;
-  startTime: plugins.bson.Timestamp;
-  status: 'active' | 'committed' | 'aborted';
-  readSet: Map<string, Set<string>>; // ns -> document _ids read
-  writeSet: Map<string, Map<string, { op: 'insert' | 'update' | 'delete'; doc?: IStoredDocument; originalDoc?: IStoredDocument }>>; // ns -> _id -> operation
-  snapshots: Map<string, IStoredDocument[]>; // ns -> snapshot of documents
-}
-
-/**
- * Transaction engine for ACID transaction support
- */
-export class TransactionEngine {
-  private storage: IStorageAdapter;
-  private transactions: Map<string, ITransactionState> = new Map();
-  private txnCounter = 0;
-
-  constructor(storage: IStorageAdapter) {
-    this.storage = storage;
-  }
-
-  /**
-   * Start a new transaction
-   */
-  startTransaction(sessionId: string, options?: ITransactionOptions): string {
-    this.txnCounter++;
-    const txnId = `txn_${sessionId}_${this.txnCounter}`;
-
-    const transaction: ITransactionState = {
-      id: txnId,
-      sessionId,
-      startTime: new plugins.bson.Timestamp({ t: Math.floor(Date.now() / 1000), i: this.txnCounter }),
-      status: 'active',
-      readSet: new Map(),
-      writeSet: new Map(),
-      snapshots: new Map(),
-    };
-
-    this.transactions.set(txnId, transaction);
-    return txnId;
-  }
-
-  /**
-   * Get a transaction by ID
-   */
-  getTransaction(txnId: string): ITransactionState | undefined {
-    return this.transactions.get(txnId);
-  }
-
-  /**
-   * Check if a transaction is active
-   */
-  isActive(txnId: string): boolean {
-    const txn = this.transactions.get(txnId);
-    return txn?.status === 'active';
-  }
-
-  /**
-   * Get or create a snapshot for a namespace
-   */
-  async getSnapshot(txnId: string, dbName: string, collName: string): Promise<IStoredDocument[]> {
-    const txn = this.transactions.get(txnId);
-    if (!txn || txn.status !== 'active') {
-      throw new TsmdbTransactionError('Transaction is not active');
-    }
-
-    const ns = `${dbName}.${collName}`;
-    if (!txn.snapshots.has(ns)) {
-      const snapshot = await this.storage.createSnapshot(dbName, collName);
-      txn.snapshots.set(ns, snapshot);
-    }
-
-    // Apply transaction writes to snapshot
-    const snapshot = txn.snapshots.get(ns)!;
-    const writes = txn.writeSet.get(ns);
-
-    if (!writes) {
-      return snapshot;
-    }
-
-    // Create a modified view of the snapshot
-    const result: IStoredDocument[] = [];
-    const deletedIds = new Set<string>();
-    const modifiedDocs = new Map<string, IStoredDocument>();
-
-    for (const [idStr, write] of writes) {
-      if (write.op === 'delete') {
-        deletedIds.add(idStr);
-      } else if (write.op === 'update' || write.op === 'insert') {
-        if (write.doc) {
-          modifiedDocs.set(idStr, write.doc);
-        }
-      }
-    }
-
-    // Add existing documents (not deleted, possibly modified)
-    for (const doc of snapshot) {
-      const idStr = doc._id.toHexString();
-      if (deletedIds.has(idStr)) {
-        continue;
-      }
-      if (modifiedDocs.has(idStr)) {
-        result.push(modifiedDocs.get(idStr)!);
-        modifiedDocs.delete(idStr);
-      } else {
-        result.push(doc);
-      }
-    }
-
-    // Add new documents (inserts)
-    for (const doc of modifiedDocs.values()) {
-      result.push(doc);
-    }
-
-    return result;
-  }
-
-  /**
-   * Record a read operation
-   */
-  recordRead(txnId: string, dbName: string, collName: string, docIds: string[]): void {
-    const txn = this.transactions.get(txnId);
-    if (!txn || txn.status !== 'active') return;
-
-    const ns = `${dbName}.${collName}`;
-    if (!txn.readSet.has(ns)) {
-      txn.readSet.set(ns, new Set());
-    }
-
-    const readSet = txn.readSet.get(ns)!;
-    for (const id of docIds) {
-      readSet.add(id);
-    }
-  }
-
-  /**
-   * Record a write operation (insert)
-   */
-  recordInsert(txnId: string, dbName: string, collName: string, doc: IStoredDocument): void {
-    const txn = this.transactions.get(txnId);
-    if (!txn || txn.status !== 'active') {
-      throw new TsmdbTransactionError('Transaction is not active');
-    }
-
-    const ns = `${dbName}.${collName}`;
-    if (!txn.writeSet.has(ns)) {
-      txn.writeSet.set(ns, new Map());
-    }
-
-    txn.writeSet.get(ns)!.set(doc._id.toHexString(), {
-      op: 'insert',
-      doc,
-    });
-  }
-
-  /**
-   * Record a write operation (update)
-   */
-  recordUpdate(
-    txnId: string,
-    dbName: string,
-    collName: string,
-    originalDoc: IStoredDocument,
-    updatedDoc: IStoredDocument
-  ): void {
-    const txn = this.transactions.get(txnId);
-    if (!txn || txn.status !== 'active') {
-      throw new TsmdbTransactionError('Transaction is not active');
-    }
-
-    const ns = `${dbName}.${collName}`;
-    if (!txn.writeSet.has(ns)) {
-      txn.writeSet.set(ns, new Map());
-    }
-
-    const idStr = originalDoc._id.toHexString();
-    const existing = txn.writeSet.get(ns)!.get(idStr);
-
-    // If we already have a write for this document, update it
-    if (existing) {
-      existing.doc = updatedDoc;
-    } else {
-      txn.writeSet.get(ns)!.set(idStr, {
-        op: 'update',
-        doc: updatedDoc,
-        originalDoc,
-      });
-    }
-  }
-
-  /**
-   * Record a write operation (delete)
-   */
-  recordDelete(txnId: string, dbName: string, collName: string, doc: IStoredDocument): void {
-    const txn = this.transactions.get(txnId);
-    if (!txn || txn.status !== 'active') {
-      throw new TsmdbTransactionError('Transaction is not active');
-    }
-
-    const ns = `${dbName}.${collName}`;
-    if (!txn.writeSet.has(ns)) {
-      txn.writeSet.set(ns, new Map());
-    }
-
-    const idStr = doc._id.toHexString();
-    const existing = txn.writeSet.get(ns)!.get(idStr);
-
-    if (existing && existing.op === 'insert') {
-      // If we inserted and then deleted, just remove the write
-      txn.writeSet.get(ns)!.delete(idStr);
-    } else {
-      txn.writeSet.get(ns)!.set(idStr, {
-        op: 'delete',
-        originalDoc: doc,
-      });
-    }
-  }
-
-  /**
-   * Commit a transaction
-   */
-  async commitTransaction(txnId: string): Promise<void> {
-    const txn = this.transactions.get(txnId);
-    if (!txn) {
-      throw new TsmdbTransactionError('Transaction not found');
-    }
-    if (txn.status !== 'active') {
-      throw new TsmdbTransactionError(`Cannot commit transaction in state: ${txn.status}`);
-    }
-
-    // Check for write conflicts
-    for (const [ns, writes] of txn.writeSet) {
-      const [dbName, collName] = ns.split('.');
-      const ids = Array.from(writes.keys()).map(id => new plugins.bson.ObjectId(id));
-
-      const hasConflicts = await this.storage.hasConflicts(dbName, collName, ids, txn.startTime);
-      if (hasConflicts) {
-        txn.status = 'aborted';
-        throw new TsmdbWriteConflictError();
-      }
-    }
-
-    // Apply all writes
-    for (const [ns, writes] of txn.writeSet) {
-      const [dbName, collName] = ns.split('.');
-
-      for (const [idStr, write] of writes) {
-        switch (write.op) {
-          case 'insert':
-            if (write.doc) {
-              await this.storage.insertOne(dbName, collName, write.doc);
-            }
-            break;
-          case 'update':
-            if (write.doc) {
-              await this.storage.updateById(dbName, collName, new plugins.bson.ObjectId(idStr), write.doc);
-            }
-            break;
-          case 'delete':
-            await this.storage.deleteById(dbName, collName, new plugins.bson.ObjectId(idStr));
-            break;
-        }
-      }
-    }
-
-    txn.status = 'committed';
-  }
-
-  /**
-   * Abort a transaction
-   */
-  async abortTransaction(txnId: string): Promise<void> {
-    const txn = this.transactions.get(txnId);
-    if (!txn) {
-      throw new TsmdbTransactionError('Transaction not found');
-    }
-    if (txn.status !== 'active') {
-      // Already committed or aborted, just return
-      return;
-    }
-
-    // Simply discard all buffered writes
-    txn.writeSet.clear();
-    txn.readSet.clear();
-    txn.snapshots.clear();
-    txn.status = 'aborted';
-  }
-
-  /**
-   * End a transaction (cleanup)
-   */
-  endTransaction(txnId: string): void {
-    this.transactions.delete(txnId);
-  }
-
-  /**
-   * Get all pending writes for a namespace
-   */
-  getPendingWrites(txnId: string, dbName: string, collName: string): Map<string, { op: 'insert' | 'update' | 'delete'; doc?: IStoredDocument }> | undefined {
-    const txn = this.transactions.get(txnId);
-    if (!txn) return undefined;
-
-    const ns = `${dbName}.${collName}`;
-    return txn.writeSet.get(ns);
-  }
-
-  /**
-   * Execute a callback within a transaction, with automatic retry on conflict
-   */
-  async withTransaction<T>(
-    sessionId: string,
-    callback: (txnId: string) => Promise<T>,
-    options?: ITransactionOptions & { maxRetries?: number }
-  ): Promise<T> {
-    const maxRetries = options?.maxRetries ?? 3;
-    let lastError: Error | undefined;
-
-    for (let attempt = 0; attempt < maxRetries; attempt++) {
-      const txnId = this.startTransaction(sessionId, options);
-
-      try {
-        const result = await callback(txnId);
-        await this.commitTransaction(txnId);
-        this.endTransaction(txnId);
-        return result;
-      } catch (error: any) {
-        await this.abortTransaction(txnId);
-        this.endTransaction(txnId);
-
-        if (error instanceof TsmdbWriteConflictError && attempt < maxRetries - 1) {
-          // Retry on write conflict
-          lastError = error;
-          continue;
-        }
-
-        throw error;
-      }
-    }
-
-    throw lastError || new TsmdbTransactionError('Transaction failed after max retries');
-  }
-}

ts/ts_tsmdb/engine/UpdateEngine.ts

@@ -1,506 +0,0 @@
-import * as plugins from '../plugins.js';
-import type { Document, IStoredDocument } from '../types/interfaces.js';
-import { QueryEngine } from './QueryEngine.js';
-
-/**
- * Update engine for MongoDB-compatible update operations
- */
-export class UpdateEngine {
-  /**
-   * Apply an update specification to a document
-   * Returns the updated document or null if no update was applied
-   */
-  static applyUpdate(document: IStoredDocument, update: Document, arrayFilters?: Document[]): IStoredDocument {
-    // Check if this is an aggregation pipeline update
-    if (Array.isArray(update)) {
-      // Aggregation pipeline updates are not yet supported
-      throw new Error('Aggregation pipeline updates are not yet supported');
-    }
-
-    // Check if this is a replacement (no $ operators at top level)
-    const hasOperators = Object.keys(update).some(k => k.startsWith('$'));
-
-    if (!hasOperators) {
-      // This is a replacement - preserve _id
-      return {
-        _id: document._id,
-        ...update,
-      };
-    }
-
-    // Apply update operators
-    const result = this.deepClone(document);
-
-    for (const [operator, operand] of Object.entries(update)) {
-      switch (operator) {
-        case '$set':
-          this.applySet(result, operand);
-          break;
-        case '$unset':
-          this.applyUnset(result, operand);
-          break;
-        case '$inc':
-          this.applyInc(result, operand);
-          break;
-        case '$mul':
-          this.applyMul(result, operand);
-          break;
-        case '$min':
-          this.applyMin(result, operand);
-          break;
-        case '$max':
-          this.applyMax(result, operand);
-          break;
-        case '$rename':
-          this.applyRename(result, operand);
-          break;
-        case '$currentDate':
-          this.applyCurrentDate(result, operand);
-          break;
-        case '$setOnInsert':
-          // Only applied during upsert insert, handled elsewhere
-          break;
-        case '$push':
-          this.applyPush(result, operand, arrayFilters);
-          break;
-        case '$pop':
-          this.applyPop(result, operand);
-          break;
-        case '$pull':
-          this.applyPull(result, operand, arrayFilters);
-          break;
-        case '$pullAll':
-          this.applyPullAll(result, operand);
-          break;
-        case '$addToSet':
-          this.applyAddToSet(result, operand);
-          break;
-        case '$bit':
-          this.applyBit(result, operand);
-          break;
-        default:
-          throw new Error(`Unknown update operator: ${operator}`);
-      }
-    }
-
-    return result;
-  }
-
-  /**
-   * Apply $setOnInsert for upsert operations
-   */
-  static applySetOnInsert(document: IStoredDocument, setOnInsert: Document): IStoredDocument {
-    const result = this.deepClone(document);
-    this.applySet(result, setOnInsert);
-    return result;
-  }
-
-  /**
-   * Deep clone a document
-   */
-  private static deepClone(obj: any): any {
-    if (obj === null || typeof obj !== 'object') {
-      return obj;
-    }
-
-    if (obj instanceof plugins.bson.ObjectId) {
-      return new plugins.bson.ObjectId(obj.toHexString());
-    }
-
-    if (obj instanceof Date) {
-      return new Date(obj.getTime());
-    }
-
-    if (obj instanceof plugins.bson.Timestamp) {
-      return new plugins.bson.Timestamp({ t: obj.high, i: obj.low });
-    }
-
-    if (Array.isArray(obj)) {
-      return obj.map(item => this.deepClone(item));
-    }
-
-    const cloned: any = {};
-    for (const key of Object.keys(obj)) {
-      cloned[key] = this.deepClone(obj[key]);
-    }
-    return cloned;
-  }
-
-  /**
-   * Set a nested value
-   */
-  private static setNestedValue(obj: any, path: string, value: any): void {
-    const parts = path.split('.');
-    let current = obj;
-
-    for (let i = 0; i < parts.length - 1; i++) {
-      const part = parts[i];
-
-      // Handle array index notation
-      const arrayMatch = part.match(/^(\w+)\[(\d+)\]$/);
-      if (arrayMatch) {
-        const [, fieldName, indexStr] = arrayMatch;
-        const index = parseInt(indexStr, 10);
-        if (!(fieldName in current)) {
-          current[fieldName] = [];
-        }
-        if (!current[fieldName][index]) {
-          current[fieldName][index] = {};
-        }
-        current = current[fieldName][index];
-        continue;
-      }
-
-      // Handle numeric index (array positional)
-      const numIndex = parseInt(part, 10);
-      if (!isNaN(numIndex) && Array.isArray(current)) {
-        if (!current[numIndex]) {
-          current[numIndex] = {};
-        }
-        current = current[numIndex];
-        continue;
-      }
-
-      if (!(part in current) || current[part] === null) {
-        current[part] = {};
-      }
-      current = current[part];
-    }
-
-    const lastPart = parts[parts.length - 1];
-    const numIndex = parseInt(lastPart, 10);
-    if (!isNaN(numIndex) && Array.isArray(current)) {
-      current[numIndex] = value;
-    } else {
-      current[lastPart] = value;
-    }
-  }
-
-  /**
-   * Get a nested value
-   */
-  private static getNestedValue(obj: any, path: string): any {
-    return QueryEngine.getNestedValue(obj, path);
-  }
-
-  /**
-   * Delete a nested value
-   */
-  private static deleteNestedValue(obj: any, path: string): void {
-    const parts = path.split('.');
-    let current = obj;
-
-    for (let i = 0; i < parts.length - 1; i++) {
-      const part = parts[i];
-      if (!(part in current)) {
-        return;
-      }
-      current = current[part];
-    }
-
-    delete current[parts[parts.length - 1]];
-  }
-
-  // ============================================================================
-  // Field Update Operators
-  // ============================================================================
-
-  private static applySet(doc: any, fields: Document): void {
-    for (const [path, value] of Object.entries(fields)) {
-      this.setNestedValue(doc, path, this.deepClone(value));
-    }
-  }
-
-  private static applyUnset(doc: any, fields: Document): void {
-    for (const path of Object.keys(fields)) {
-      this.deleteNestedValue(doc, path);
-    }
-  }
-
-  private static applyInc(doc: any, fields: Document): void {
-    for (const [path, value] of Object.entries(fields)) {
-      const current = this.getNestedValue(doc, path) || 0;
-      if (typeof current !== 'number') {
-        throw new Error(`Cannot apply $inc to non-numeric field: ${path}`);
-      }
-      this.setNestedValue(doc, path, current + (value as number));
-    }
-  }
-
-  private static applyMul(doc: any, fields: Document): void {
-    for (const [path, value] of Object.entries(fields)) {
-      const current = this.getNestedValue(doc, path) || 0;
-      if (typeof current !== 'number') {
-        throw new Error(`Cannot apply $mul to non-numeric field: ${path}`);
-      }
-      this.setNestedValue(doc, path, current * (value as number));
-    }
-  }
-
-  private static applyMin(doc: any, fields: Document): void {
-    for (const [path, value] of Object.entries(fields)) {
-      const current = this.getNestedValue(doc, path);
-      if (current === undefined || this.compareValues(value, current) < 0) {
-        this.setNestedValue(doc, path, this.deepClone(value));
-      }
-    }
-  }
-
-  private static applyMax(doc: any, fields: Document): void {
-    for (const [path, value] of Object.entries(fields)) {
-      const current = this.getNestedValue(doc, path);
-      if (current === undefined || this.compareValues(value, current) > 0) {
-        this.setNestedValue(doc, path, this.deepClone(value));
-      }
-    }
-  }
-
-  private static applyRename(doc: any, fields: Document): void {
-    for (const [oldPath, newPath] of Object.entries(fields)) {
-      const value = this.getNestedValue(doc, oldPath);
-      if (value !== undefined) {
-        this.deleteNestedValue(doc, oldPath);
-        this.setNestedValue(doc, newPath as string, value);
-      }
-    }
-  }
-
-  private static applyCurrentDate(doc: any, fields: Document): void {
-    for (const [path, spec] of Object.entries(fields)) {
-      if (spec === true) {
-        this.setNestedValue(doc, path, new Date());
-      } else if (typeof spec === 'object' && spec.$type === 'date') {
-        this.setNestedValue(doc, path, new Date());
-      } else if (typeof spec === 'object' && spec.$type === 'timestamp') {
-        this.setNestedValue(doc, path, new plugins.bson.Timestamp({ t: Math.floor(Date.now() / 1000), i: 0 }));
-      }
-    }
-  }
-
-  // ============================================================================
-  // Array Update Operators
-  // ============================================================================
-
-  private static applyPush(doc: any, fields: Document, arrayFilters?: Document[]): void {
-    for (const [path, spec] of Object.entries(fields)) {
-      let arr = this.getNestedValue(doc, path);
-      if (arr === undefined) {
-        arr = [];
-        this.setNestedValue(doc, path, arr);
-      }
-      if (!Array.isArray(arr)) {
-        throw new Error(`Cannot apply $push to non-array field: ${path}`);
-      }
-
-      if (spec && typeof spec === 'object' && '$each' in spec) {
-        // $push with modifiers
-        let elements = (spec.$each as any[]).map(e => this.deepClone(e));
-        const position = spec.$position as number | undefined;
-        const slice = spec.$slice as number | undefined;
-        const sortSpec = spec.$sort;
-
-        if (position !== undefined) {
-          arr.splice(position, 0, ...elements);
-        } else {
-          arr.push(...elements);
-        }
-
-        if (sortSpec !== undefined) {
-          if (typeof sortSpec === 'number') {
-            arr.sort((a, b) => (a - b) * sortSpec);
-          } else {
-            // Sort by field(s)
-            const entries = Object.entries(sortSpec as Document);
-            arr.sort((a, b) => {
-              for (const [field, dir] of entries) {
-                const av = this.getNestedValue(a, field);
-                const bv = this.getNestedValue(b, field);
-                const cmp = this.compareValues(av, bv) * (dir as number);
-                if (cmp !== 0) return cmp;
-              }
-              return 0;
-            });
-          }
-        }
-
-        if (slice !== undefined) {
-          if (slice >= 0) {
-            arr.splice(slice);
-          } else {
-            arr.splice(0, arr.length + slice);
-          }
-        }
-      } else {
-        // Simple push
-        arr.push(this.deepClone(spec));
-      }
-    }
-  }
-
-  private static applyPop(doc: any, fields: Document): void {
-    for (const [path, direction] of Object.entries(fields)) {
-      const arr = this.getNestedValue(doc, path);
-      if (!Array.isArray(arr)) {
-        throw new Error(`Cannot apply $pop to non-array field: ${path}`);
-      }
-
-      if ((direction as number) === 1) {
-        arr.pop();
-      } else {
-        arr.shift();
-      }
-    }
-  }
-
-  private static applyPull(doc: any, fields: Document, arrayFilters?: Document[]): void {
-    for (const [path, condition] of Object.entries(fields)) {
-      const arr = this.getNestedValue(doc, path);
-      if (!Array.isArray(arr)) {
-        continue; // Skip if not an array
-      }
-
-      if (typeof condition === 'object' && condition !== null && !Array.isArray(condition)) {
-        // Condition is a query filter
-        const hasOperators = Object.keys(condition).some(k => k.startsWith('$'));
-        if (hasOperators) {
-          // Filter using query operators
-          const remaining = arr.filter(item => !QueryEngine.matches(item, condition));
-          arr.length = 0;
-          arr.push(...remaining);
-        } else {
-          // Match documents with all specified fields
-          const remaining = arr.filter(item => {
-            if (typeof item !== 'object' || item === null) {
-              return true;
-            }
-            return !Object.entries(condition).every(([k, v]) => {
-              const itemVal = this.getNestedValue(item, k);
-              return this.valuesEqual(itemVal, v);
-            });
-          });
-          arr.length = 0;
-          arr.push(...remaining);
-        }
-      } else {
-        // Direct value match
-        const remaining = arr.filter(item => !this.valuesEqual(item, condition));
-        arr.length = 0;
-        arr.push(...remaining);
-      }
-    }
-  }
-
-  private static applyPullAll(doc: any, fields: Document): void {
-    for (const [path, values] of Object.entries(fields)) {
-      const arr = this.getNestedValue(doc, path);
-      if (!Array.isArray(arr)) {
-        continue;
-      }
-      if (!Array.isArray(values)) {
-        throw new Error(`$pullAll requires an array argument`);
-      }
-
-      const valueSet = new Set(values.map(v => JSON.stringify(v)));
-      const remaining = arr.filter(item => !valueSet.has(JSON.stringify(item)));
-      arr.length = 0;
-      arr.push(...remaining);
-    }
-  }
-
-  private static applyAddToSet(doc: any, fields: Document): void {
-    for (const [path, spec] of Object.entries(fields)) {
-      let arr = this.getNestedValue(doc, path);
-      if (arr === undefined) {
-        arr = [];
-        this.setNestedValue(doc, path, arr);
-      }
-      if (!Array.isArray(arr)) {
-        throw new Error(`Cannot apply $addToSet to non-array field: ${path}`);
-      }
-
-      const existingSet = new Set(arr.map(v => JSON.stringify(v)));
-
-      if (spec && typeof spec === 'object' && '$each' in spec) {
-        for (const item of spec.$each as any[]) {
-          const key = JSON.stringify(item);
-          if (!existingSet.has(key)) {
-            arr.push(this.deepClone(item));
-            existingSet.add(key);
-          }
-        }
-      } else {
-        const key = JSON.stringify(spec);
-        if (!existingSet.has(key)) {
-          arr.push(this.deepClone(spec));
-        }
-      }
-    }
-  }
-
-  private static applyBit(doc: any, fields: Document): void {
-    for (const [path, operations] of Object.entries(fields)) {
-      let current = this.getNestedValue(doc, path) || 0;
-      if (typeof current !== 'number') {
-        throw new Error(`Cannot apply $bit to non-numeric field: ${path}`);
-      }
-
-      for (const [op, value] of Object.entries(operations as Document)) {
-        switch (op) {
-          case 'and':
-            current = current & (value as number);
-            break;
-          case 'or':
-            current = current | (value as number);
-            break;
-          case 'xor':
-            current = current ^ (value as number);
-            break;
-        }
-      }
-
-      this.setNestedValue(doc, path, current);
-    }
-  }
-
-  // ============================================================================
-  // Helper Methods
-  // ============================================================================
-
-  private static compareValues(a: any, b: any): number {
-    if (a === b) return 0;
-    if (a === null || a === undefined) return -1;
-    if (b === null || b === undefined) return 1;
-
-    if (typeof a === 'number' && typeof b === 'number') {
-      return a - b;
-    }
-
-    if (a instanceof Date && b instanceof Date) {
-      return a.getTime() - b.getTime();
-    }
-
-    if (typeof a === 'string' && typeof b === 'string') {
-      return a.localeCompare(b);
-    }
-
-    return String(a).localeCompare(String(b));
-  }
-
-  private static valuesEqual(a: any, b: any): boolean {
-    if (a === b) return true;
-
-    if (a instanceof plugins.bson.ObjectId && b instanceof plugins.bson.ObjectId) {
-      return a.equals(b);
-    }
-
-    if (a instanceof Date && b instanceof Date) {
-      return a.getTime() === b.getTime();
-    }
-
-    if (typeof a === 'object' && typeof b === 'object' && a !== null && b !== null) {
-      return JSON.stringify(a) === JSON.stringify(b);
-    }
-
-    return false;
-  }
-}

ts/ts_tsmdb/errors/TsmdbErrors.ts

@@ -1,181 +0,0 @@
-/**
- * Base error class for all TsmDB errors
- * Mirrors MongoDB driver error hierarchy
- */
-export class TsmdbError extends Error {
-  public code?: number;
-  public codeName?: string;
-
-  constructor(message: string, code?: number, codeName?: string) {
-    super(message);
-    this.name = 'TsmdbError';
-    this.code = code;
-    this.codeName = codeName;
-    Object.setPrototypeOf(this, new.target.prototype);
-  }
-}
-
-/**
- * Error thrown during connection issues
- */
-export class TsmdbConnectionError extends TsmdbError {
-  constructor(message: string) {
-    super(message);
-    this.name = 'TsmdbConnectionError';
-  }
-}
-
-/**
- * Error thrown when an operation times out
- */
-export class TsmdbTimeoutError extends TsmdbError {
-  constructor(message: string) {
-    super(message, 50, 'MaxTimeMSExpired');
-    this.name = 'TsmdbTimeoutError';
-  }
-}
-
-/**
- * Error thrown during write operations
- */
-export class TsmdbWriteError extends TsmdbError {
-  public writeErrors?: IWriteError[];
-  public result?: any;
-
-  constructor(message: string, code?: number, writeErrors?: IWriteError[]) {
-    super(message, code);
-    this.name = 'TsmdbWriteError';
-    this.writeErrors = writeErrors;
-  }
-}
-
-/**
- * Error thrown for duplicate key violations
- */
-export class TsmdbDuplicateKeyError extends TsmdbWriteError {
-  public keyPattern?: Record<string, 1>;
-  public keyValue?: Record<string, any>;
-
-  constructor(message: string, keyPattern?: Record<string, 1>, keyValue?: Record<string, any>) {
-    super(message, 11000);
-    this.name = 'TsmdbDuplicateKeyError';
-    this.codeName = 'DuplicateKey';
-    this.keyPattern = keyPattern;
-    this.keyValue = keyValue;
-  }
-}
-
-/**
- * Error thrown for bulk write failures
- */
-export class TsmdbBulkWriteError extends TsmdbError {
-  public writeErrors: IWriteError[];
-  public result: any;
-
-  constructor(message: string, writeErrors: IWriteError[], result: any) {
-    super(message, 65);
-    this.name = 'TsmdbBulkWriteError';
-    this.writeErrors = writeErrors;
-    this.result = result;
-  }
-}
-
-/**
- * Error thrown during transaction operations
- */
-export class TsmdbTransactionError extends TsmdbError {
-  constructor(message: string, code?: number) {
-    super(message, code);
-    this.name = 'TsmdbTransactionError';
-  }
-}
-
-/**
- * Error thrown when a transaction is aborted due to conflict
- */
-export class TsmdbWriteConflictError extends TsmdbTransactionError {
-  constructor(message: string = 'Write conflict during transaction') {
-    super(message, 112);
-    this.name = 'TsmdbWriteConflictError';
-    this.codeName = 'WriteConflict';
-  }
-}
-
-/**
- * Error thrown for invalid arguments
- */
-export class TsmdbArgumentError extends TsmdbError {
-  constructor(message: string) {
-    super(message);
-    this.name = 'TsmdbArgumentError';
-  }
-}
-
-/**
- * Error thrown when an operation is not supported
- */
-export class TsmdbNotSupportedError extends TsmdbError {
-  constructor(message: string) {
-    super(message, 115);
-    this.name = 'TsmdbNotSupportedError';
-    this.codeName = 'CommandNotSupported';
-  }
-}
-
-/**
- * Error thrown when cursor is exhausted or closed
- */
-export class TsmdbCursorError extends TsmdbError {
-  constructor(message: string) {
-    super(message);
-    this.name = 'TsmdbCursorError';
-  }
-}
-
-/**
- * Error thrown when a namespace (database.collection) is invalid
- */
-export class TsmdbNamespaceError extends TsmdbError {
-  constructor(message: string) {
-    super(message, 73);
-    this.name = 'TsmdbNamespaceError';
-    this.codeName = 'InvalidNamespace';
-  }
-}
-
-/**
- * Error thrown when an index operation fails
- */
-export class TsmdbIndexError extends TsmdbError {
-  constructor(message: string, code?: number) {
-    super(message, code || 86);
-    this.name = 'TsmdbIndexError';
-  }
-}
-
-/**
- * Write error detail for bulk operations
- */
-export interface IWriteError {
-  index: number;
-  code: number;
-  errmsg: string;
-  op: any;
-}
-
-/**
- * Convert any error to a TsmdbError
- */
-export function toTsmdbError(error: any): TsmdbError {
-  if (error instanceof TsmdbError) {
-    return error;
-  }
-  const tsmdbError = new TsmdbError(error.message || String(error));
-  if (error.code) {
-    tsmdbError.code = error.code;
-  }
-  if (error.codeName) {
-    tsmdbError.codeName = error.codeName;
-  }
-  return tsmdbError;
-}

ts/ts_tsmdb/index.ts

@@ -1,46 +0,0 @@
-// TsmDB - MongoDB Wire Protocol compatible in-memory database server
-// Use the official MongoDB driver to connect to TsmdbServer
-
-// Re-export plugins for external use
-import * as plugins from './plugins.js';
-export { plugins };
-
-// Export BSON types for convenience
-export { ObjectId, Binary, Timestamp, Long, Decimal128, UUID } from 'bson';
-
-// Export all types
-export * from './types/interfaces.js';
-
-// Export errors
-export * from './errors/TsmdbErrors.js';
-
-// Export storage adapters
-export type { IStorageAdapter } from './storage/IStorageAdapter.js';
-export { MemoryStorageAdapter } from './storage/MemoryStorageAdapter.js';
-export { FileStorageAdapter } from './storage/FileStorageAdapter.js';
-export { OpLog } from './storage/OpLog.js';
-export { WAL } from './storage/WAL.js';
-export type { IWalEntry, TWalOperation } from './storage/WAL.js';
-
-// Export engines
-export { QueryEngine } from './engine/QueryEngine.js';
-export { UpdateEngine } from './engine/UpdateEngine.js';
-export { AggregationEngine } from './engine/AggregationEngine.js';
-export { IndexEngine } from './engine/IndexEngine.js';
-export { TransactionEngine } from './engine/TransactionEngine.js';
-export { QueryPlanner } from './engine/QueryPlanner.js';
-export type { IQueryPlan, TQueryPlanType } from './engine/QueryPlanner.js';
-export { SessionEngine } from './engine/SessionEngine.js';
-export type { ISession, ISessionEngineOptions } from './engine/SessionEngine.js';
-
-// Export server (the main entry point for using TsmDB)
-export { TsmdbServer } from './server/TsmdbServer.js';
-export type { ITsmdbServerOptions } from './server/TsmdbServer.js';
-
-// Export wire protocol utilities (for advanced usage)
-export { WireProtocol } from './server/WireProtocol.js';
-export { CommandRouter } from './server/CommandRouter.js';
-export type { ICommandHandler, IHandlerContext, ICursorState } from './server/CommandRouter.js';
-
-// Export utilities
-export * from './utils/checksum.js';

ts/ts_tsmdb/plugins.ts

@@ -1,17 +0,0 @@
-// @push.rocks scope
-import * as smartfs from '@push.rocks/smartfs';
-import * as smartpath from '@push.rocks/smartpath';
-import * as smartpromise from '@push.rocks/smartpromise';
-import * as smartrx from '@push.rocks/smartrx';
-
-export { smartfs, smartpath, smartpromise, smartrx };
-
-// thirdparty
-import * as bson from 'bson';
-import * as mingo from 'mingo';
-
-export { bson, mingo };
-
-// Re-export commonly used mingo classes
-export { Query } from 'mingo';
-export { Aggregator } from 'mingo';

ts/ts_tsmdb/server/CommandRouter.ts

@@ -1,289 +0,0 @@
-import * as plugins from '../plugins.js';
-import type { IStorageAdapter } from '../storage/IStorageAdapter.js';
-import type { IParsedCommand } from './WireProtocol.js';
-import type { TsmdbServer } from './TsmdbServer.js';
-import { IndexEngine } from '../engine/IndexEngine.js';
-import { TransactionEngine } from '../engine/TransactionEngine.js';
-import { SessionEngine } from '../engine/SessionEngine.js';
-
-// Import handlers
-import { HelloHandler } from './handlers/HelloHandler.js';
-import { InsertHandler } from './handlers/InsertHandler.js';
-import { FindHandler } from './handlers/FindHandler.js';
-import { UpdateHandler } from './handlers/UpdateHandler.js';
-import { DeleteHandler } from './handlers/DeleteHandler.js';
-import { AggregateHandler } from './handlers/AggregateHandler.js';
-import { IndexHandler } from './handlers/IndexHandler.js';
-import { AdminHandler } from './handlers/AdminHandler.js';
-
-/**
- * Handler context passed to command handlers
- */
-export interface IHandlerContext {
-  storage: IStorageAdapter;
-  server: TsmdbServer;
-  database: string;
-  command: plugins.bson.Document;
-  documentSequences?: Map<string, plugins.bson.Document[]>;
-  /** Get or create an IndexEngine for a collection */
-  getIndexEngine: (collName: string) => IndexEngine;
-  /** Transaction engine instance */
-  transactionEngine: TransactionEngine;
-  /** Current transaction ID (if in a transaction) */
-  txnId?: string;
-  /** Session ID (from lsid) */
-  sessionId?: string;
-  /** Session engine instance */
-  sessionEngine: SessionEngine;
-}
-
-/**
- * Command handler interface
- */
-export interface ICommandHandler {
-  handle(context: IHandlerContext): Promise<plugins.bson.Document>;
-}
-
-/**
- * CommandRouter - Routes incoming commands to appropriate handlers
- */
-export class CommandRouter {
-  private storage: IStorageAdapter;
-  private server: TsmdbServer;
-  private handlers: Map<string, ICommandHandler> = new Map();
-
-  // Cursor state for getMore operations
-  private cursors: Map<bigint, ICursorState> = new Map();
-  private cursorIdCounter: bigint = BigInt(1);
-
-  // Index engine cache: db.collection -> IndexEngine
-  private indexEngines: Map<string, IndexEngine> = new Map();
-
-  // Transaction engine (shared across all handlers)
-  private transactionEngine: TransactionEngine;
-
-  // Session engine (shared across all handlers)
-  private sessionEngine: SessionEngine;
-
-  constructor(storage: IStorageAdapter, server: TsmdbServer) {
-    this.storage = storage;
-    this.server = server;
-    this.transactionEngine = new TransactionEngine(storage);
-    this.sessionEngine = new SessionEngine();
-    // Link session engine to transaction engine for auto-abort on session expiry
-    this.sessionEngine.setTransactionEngine(this.transactionEngine);
-    this.registerHandlers();
-  }
-
-  /**
-   * Get or create an IndexEngine for a database.collection
-   */
-  getIndexEngine(dbName: string, collName: string): IndexEngine {
-    const key = `${dbName}.${collName}`;
-    let engine = this.indexEngines.get(key);
-    if (!engine) {
-      engine = new IndexEngine(dbName, collName, this.storage);
-      this.indexEngines.set(key, engine);
-    }
-    return engine;
-  }
-
-  /**
-   * Clear index engine cache for a collection (used when collection is dropped)
-   */
-  clearIndexEngineCache(dbName: string, collName?: string): void {
-    if (collName) {
-      this.indexEngines.delete(`${dbName}.${collName}`);
-    } else {
-      // Clear all engines for the database
-      for (const key of this.indexEngines.keys()) {
-        if (key.startsWith(`${dbName}.`)) {
-          this.indexEngines.delete(key);
-        }
-      }
-    }
-  }
-
-  /**
-   * Register all command handlers
-   */
-  private registerHandlers(): void {
-    // Create handler instances with shared state
-    const helloHandler = new HelloHandler();
-    const findHandler = new FindHandler(this.cursors, () => this.cursorIdCounter++);
-    const insertHandler = new InsertHandler();
-    const updateHandler = new UpdateHandler();
-    const deleteHandler = new DeleteHandler();
-    const aggregateHandler = new AggregateHandler(this.cursors, () => this.cursorIdCounter++);
-    const indexHandler = new IndexHandler();
-    const adminHandler = new AdminHandler();
-
-    // Handshake commands
-    this.handlers.set('hello', helloHandler);
-    this.handlers.set('ismaster', helloHandler);
-    this.handlers.set('isMaster', helloHandler);
-
-    // CRUD commands
-    this.handlers.set('find', findHandler);
-    this.handlers.set('insert', insertHandler);
-    this.handlers.set('update', updateHandler);
-    this.handlers.set('delete', deleteHandler);
-    this.handlers.set('findAndModify', updateHandler);
-    this.handlers.set('getMore', findHandler);
-    this.handlers.set('killCursors', findHandler);
-
-    // Aggregation
-    this.handlers.set('aggregate', aggregateHandler);
-    this.handlers.set('count', findHandler);
-    this.handlers.set('distinct', findHandler);
-
-    // Index operations
-    this.handlers.set('createIndexes', indexHandler);
-    this.handlers.set('dropIndexes', indexHandler);
-    this.handlers.set('listIndexes', indexHandler);
-
-    // Admin/Database operations
-    this.handlers.set('ping', adminHandler);
-    this.handlers.set('listDatabases', adminHandler);
-    this.handlers.set('listCollections', adminHandler);
-    this.handlers.set('drop', adminHandler);
-    this.handlers.set('dropDatabase', adminHandler);
-    this.handlers.set('create', adminHandler);
-    this.handlers.set('serverStatus', adminHandler);
-    this.handlers.set('buildInfo', adminHandler);
-    this.handlers.set('whatsmyuri', adminHandler);
-    this.handlers.set('getLog', adminHandler);
-    this.handlers.set('hostInfo', adminHandler);
-    this.handlers.set('replSetGetStatus', adminHandler);
-    this.handlers.set('isMaster', helloHandler);
-    this.handlers.set('saslStart', adminHandler);
-    this.handlers.set('saslContinue', adminHandler);
-    this.handlers.set('endSessions', adminHandler);
-    this.handlers.set('abortTransaction', adminHandler);
-    this.handlers.set('commitTransaction', adminHandler);
-    this.handlers.set('collStats', adminHandler);
-    this.handlers.set('dbStats', adminHandler);
-    this.handlers.set('connectionStatus', adminHandler);
-    this.handlers.set('currentOp', adminHandler);
-    this.handlers.set('collMod', adminHandler);
-    this.handlers.set('renameCollection', adminHandler);
-  }
-
-  /**
-   * Route a command to its handler
-   */
-  async route(parsedCommand: IParsedCommand): Promise<plugins.bson.Document> {
-    const { commandName, command, database, documentSequences } = parsedCommand;
-
-    // Extract session ID from lsid using SessionEngine helper
-    let sessionId = SessionEngine.extractSessionId(command.lsid);
-    let txnId: string | undefined;
-
-    // If we have a session ID, register/touch the session
-    if (sessionId) {
-      this.sessionEngine.getOrCreateSession(sessionId);
-    }
-
-    // Check if this starts a new transaction
-    if (command.startTransaction && sessionId) {
-      txnId = this.transactionEngine.startTransaction(sessionId);
-      this.sessionEngine.startTransaction(sessionId, txnId, command.txnNumber);
-    } else if (sessionId && this.sessionEngine.isInTransaction(sessionId)) {
-      // Continue existing transaction
-      txnId = this.sessionEngine.getTransactionId(sessionId);
-      // Verify transaction is still active
-      if (txnId && !this.transactionEngine.isActive(txnId)) {
-        this.sessionEngine.endTransaction(sessionId);
-        txnId = undefined;
-      }
-    }
-
-    // Create handler context
-    const context: IHandlerContext = {
-      storage: this.storage,
-      server: this.server,
-      database,
-      command,
-      documentSequences,
-      getIndexEngine: (collName: string) => this.getIndexEngine(database, collName),
-      transactionEngine: this.transactionEngine,
-      sessionEngine: this.sessionEngine,
-      txnId,
-      sessionId,
-    };
-
-    // Find handler
-    const handler = this.handlers.get(commandName);
-
-    if (!handler) {
-      // Unknown command
-      return {
-        ok: 0,
-        errmsg: `no such command: '${commandName}'`,
-        code: 59,
-        codeName: 'CommandNotFound',
-      };
-    }
-
-    try {
-      return await handler.handle(context);
-    } catch (error: any) {
-      // Handle known error types
-      if (error.code) {
-        return {
-          ok: 0,
-          errmsg: error.message,
-          code: error.code,
-          codeName: error.codeName || 'UnknownError',
-        };
-      }
-
-      // Generic error
-      return {
-        ok: 0,
-        errmsg: error.message || 'Internal error',
-        code: 1,
-        codeName: 'InternalError',
-      };
-    }
-  }
-
-  /**
-   * Close the command router and cleanup resources
-   */
-  close(): void {
-    // Close session engine (stops cleanup interval, clears sessions)
-    this.sessionEngine.close();
-    // Clear cursors
-    this.cursors.clear();
-    // Clear index engine cache
-    this.indexEngines.clear();
-  }
-
-  /**
-   * Get session engine (for administrative purposes)
-   */
-  getSessionEngine(): SessionEngine {
-    return this.sessionEngine;
-  }
-
-  /**
-   * Get transaction engine (for administrative purposes)
-   */
-  getTransactionEngine(): TransactionEngine {
-    return this.transactionEngine;
-  }
-}
-
-/**
- * Cursor state for multi-batch queries
- */
-export interface ICursorState {
-  id: bigint;
-  database: string;
-  collection: string;
-  documents: plugins.bson.Document[];
-  position: number;
-  batchSize: number;
-  createdAt: Date;
-}

ts/ts_tsmdb/server/TsmdbServer.ts

@@ -1,301 +0,0 @@
-import * as net from 'net';
-import * as plugins from '../plugins.js';
-import { WireProtocol, OP_QUERY } from './WireProtocol.js';
-import { CommandRouter } from './CommandRouter.js';
-import { MemoryStorageAdapter } from '../storage/MemoryStorageAdapter.js';
-import { FileStorageAdapter } from '../storage/FileStorageAdapter.js';
-import type { IStorageAdapter } from '../storage/IStorageAdapter.js';
-
-/**
- * Server configuration options
- */
-export interface ITsmdbServerOptions {
-  /** Port to listen on (default: 27017) */
-  port?: number;
-  /** Host to bind to (default: 127.0.0.1) */
-  host?: string;
-  /** Storage type: 'memory' or 'file' (default: 'memory') */
-  storage?: 'memory' | 'file';
-  /** Path for file storage (required if storage is 'file') */
-  storagePath?: string;
-  /** Enable persistence for memory storage */
-  persistPath?: string;
-  /** Persistence interval in ms (default: 60000) */
-  persistIntervalMs?: number;
-}
-
-/**
- * Connection state for each client
- */
-interface IConnectionState {
-  id: number;
-  socket: net.Socket;
-  buffer: Buffer;
-  authenticated: boolean;
-  database: string;
-}
-
-/**
- * TsmdbServer - MongoDB Wire Protocol compatible server
- *
- * This server implements the MongoDB wire protocol (OP_MSG) to allow
- * official MongoDB drivers to connect and perform operations.
- *
- * @example
- * ```typescript
- * import { TsmdbServer } from '@push.rocks/smartmongo/tsmdb';
- * import { MongoClient } from 'mongodb';
- *
- * const server = new TsmdbServer({ port: 27017 });
- * await server.start();
- *
- * const client = new MongoClient('mongodb://127.0.0.1:27017');
- * await client.connect();
- * ```
- */
-export class TsmdbServer {
-  private options: Required<ITsmdbServerOptions>;
-  private server: net.Server | null = null;
-  private storage: IStorageAdapter;
-  private commandRouter: CommandRouter;
-  private connections: Map<number, IConnectionState> = new Map();
-  private connectionIdCounter = 0;
-  private isRunning = false;
-  private startTime: Date = new Date();
-
-  constructor(options: ITsmdbServerOptions = {}) {
-    this.options = {
-      port: options.port ?? 27017,
-      host: options.host ?? '127.0.0.1',
-      storage: options.storage ?? 'memory',
-      storagePath: options.storagePath ?? './data',
-      persistPath: options.persistPath ?? '',
-      persistIntervalMs: options.persistIntervalMs ?? 60000,
-    };
-
-    // Create storage adapter
-    if (this.options.storage === 'file') {
-      this.storage = new FileStorageAdapter(this.options.storagePath);
-    } else {
-      this.storage = new MemoryStorageAdapter({
-        persistPath: this.options.persistPath || undefined,
-        persistIntervalMs: this.options.persistPath ? this.options.persistIntervalMs : undefined,
-      });
-    }
-
-    // Create command router
-    this.commandRouter = new CommandRouter(this.storage, this);
-  }
-
-  /**
-   * Get the storage adapter (for testing/debugging)
-   */
-  getStorage(): IStorageAdapter {
-    return this.storage;
-  }
-
-  /**
-   * Get server uptime in seconds
-   */
-  getUptime(): number {
-    return Math.floor((Date.now() - this.startTime.getTime()) / 1000);
-  }
-
-  /**
-   * Get current connection count
-   */
-  getConnectionCount(): number {
-    return this.connections.size;
-  }
-
-  /**
-   * Start the server
-   */
-  async start(): Promise<void> {
-    if (this.isRunning) {
-      throw new Error('Server is already running');
-    }
-
-    // Initialize storage
-    await this.storage.initialize();
-
-    return new Promise((resolve, reject) => {
-      this.server = net.createServer((socket) => {
-        this.handleConnection(socket);
-      });
-
-      this.server.on('error', (err) => {
-        if (!this.isRunning) {
-          reject(err);
-        } else {
-          console.error('Server error:', err);
-        }
-      });
-
-      this.server.listen(this.options.port, this.options.host, () => {
-        this.isRunning = true;
-        this.startTime = new Date();
-        resolve();
-      });
-    });
-  }
-
-  /**
-   * Stop the server
-   */
-  async stop(): Promise<void> {
-    if (!this.isRunning || !this.server) {
-      return;
-    }
-
-    // Close all connections
-    for (const conn of this.connections.values()) {
-      conn.socket.destroy();
-    }
-    this.connections.clear();
-
-    // Close command router (cleans up session engine, cursors, etc.)
-    this.commandRouter.close();
-
-    // Close storage
-    await this.storage.close();
-
-    return new Promise((resolve) => {
-      this.server!.close(() => {
-        this.isRunning = false;
-        this.server = null;
-        resolve();
-      });
-    });
-  }
-
-  /**
-   * Handle a new client connection
-   */
-  private handleConnection(socket: net.Socket): void {
-    const connectionId = ++this.connectionIdCounter;
-
-    const state: IConnectionState = {
-      id: connectionId,
-      socket,
-      buffer: Buffer.alloc(0),
-      authenticated: true, // No auth required for now
-      database: 'test',
-    };
-
-    this.connections.set(connectionId, state);
-
-    socket.on('data', (data) => {
-      this.handleData(state, Buffer.isBuffer(data) ? data : Buffer.from(data));
-    });
-
-    socket.on('close', () => {
-      this.connections.delete(connectionId);
-    });
-
-    socket.on('error', (err) => {
-      // Connection errors are expected when clients disconnect
-      this.connections.delete(connectionId);
-    });
-  }
-
-  /**
-   * Handle incoming data from a client
-   */
-  private handleData(state: IConnectionState, data: Buffer): void {
-    // Append new data to buffer
-    state.buffer = Buffer.concat([state.buffer, data]);
-
-    // Process messages from buffer
-    this.processMessages(state);
-  }
-
-  /**
-   * Process complete messages from the buffer
-   */
-  private async processMessages(state: IConnectionState): Promise<void> {
-    while (state.buffer.length >= 16) {
-      try {
-        const result = WireProtocol.parseMessage(state.buffer);
-
-        if (!result) {
-          // Not enough data for a complete message
-          break;
-        }
-
-        const { command, bytesConsumed } = result;
-
-        // Remove processed bytes from buffer
-        state.buffer = state.buffer.subarray(bytesConsumed);
-
-        // Process the command
-        const response = await this.commandRouter.route(command);
-
-        // Encode and send response
-        let responseBuffer: Buffer;
-        if (command.opCode === OP_QUERY) {
-          // Legacy OP_QUERY gets OP_REPLY response
-          responseBuffer = WireProtocol.encodeOpReplyResponse(
-            command.requestID,
-            [response]
-          );
-        } else {
-          // OP_MSG gets OP_MSG response
-          responseBuffer = WireProtocol.encodeOpMsgResponse(
-            command.requestID,
-            response
-          );
-        }
-
-        if (!state.socket.destroyed) {
-          state.socket.write(responseBuffer);
-        }
-      } catch (error: any) {
-        // Send error response
-        const errorResponse = WireProtocol.encodeErrorResponse(
-          0, // We don't have the requestID at this point
-          1,
-          error.message || 'Internal error'
-        );
-
-        if (!state.socket.destroyed) {
-          state.socket.write(errorResponse);
-        }
-
-        // Clear buffer on parse errors to avoid infinite loops
-        if (error.message?.includes('opCode') || error.message?.includes('section')) {
-          state.buffer = Buffer.alloc(0);
-        }
-        break;
-      }
-    }
-  }
-
-  /**
-   * Get the connection URI for this server
-   */
-  getConnectionUri(): string {
-    return `mongodb://${this.options.host}:${this.options.port}`;
-  }
-
-  /**
-   * Check if the server is running
-   */
-  get running(): boolean {
-    return this.isRunning;
-  }
-
-  /**
-   * Get the port the server is listening on
-   */
-  get port(): number {
-    return this.options.port;
-  }
-
-  /**
-   * Get the host the server is bound to
-   */
-  get host(): string {
-    return this.options.host;
-  }
-}

ts/ts_tsmdb/server/WireProtocol.ts

@@ -1,416 +0,0 @@
-import * as plugins from '../plugins.js';
-
-/**
- * MongoDB Wire Protocol Implementation
- * Handles parsing and encoding of MongoDB wire protocol messages (OP_MSG primarily)
- *
- * Wire Protocol Message Format:
- * - Header (16 bytes): messageLength (4), requestID (4), responseTo (4), opCode (4)
- * - OP_MSG: flagBits (4), sections[], optional checksum (4)
- *
- * References:
- * - https://www.mongodb.com/docs/manual/reference/mongodb-wire-protocol/
- */
-
-// OpCodes
-export const OP_REPLY = 1;        // Legacy reply
-export const OP_UPDATE = 2001;    // Legacy update
-export const OP_INSERT = 2002;    // Legacy insert
-export const OP_QUERY = 2004;     // Legacy query (still used for initial handshake)
-export const OP_GET_MORE = 2005;  // Legacy getMore
-export const OP_DELETE = 2006;    // Legacy delete
-export const OP_KILL_CURSORS = 2007; // Legacy kill cursors
-export const OP_COMPRESSED = 2012;   // Compressed message
-export const OP_MSG = 2013;       // Modern protocol (MongoDB 3.6+)
-
-// OP_MSG Section Types
-export const SECTION_BODY = 0;           // Single BSON document
-export const SECTION_DOCUMENT_SEQUENCE = 1; // Document sequence for bulk operations
-
-// OP_MSG Flag Bits
-export const MSG_FLAG_CHECKSUM_PRESENT = 1 << 0;
-export const MSG_FLAG_MORE_TO_COME = 1 << 1;
-export const MSG_FLAG_EXHAUST_ALLOWED = 1 << 16;
-
-/**
- * Parsed message header
- */
-export interface IMessageHeader {
-  messageLength: number;
-  requestID: number;
-  responseTo: number;
-  opCode: number;
-}
-
-/**
- * Parsed OP_MSG message
- */
-export interface IOpMsgMessage {
-  header: IMessageHeader;
-  flagBits: number;
-  sections: IOpMsgSection[];
-  checksum?: number;
-}
-
-/**
- * OP_MSG section (either body or document sequence)
- */
-export interface IOpMsgSection {
-  type: number;
-  payload: plugins.bson.Document;
-  sequenceIdentifier?: string;
-  documents?: plugins.bson.Document[];
-}
-
-/**
- * Parsed OP_QUERY message (legacy, but used for initial handshake)
- */
-export interface IOpQueryMessage {
-  header: IMessageHeader;
-  flags: number;
-  fullCollectionName: string;
-  numberToSkip: number;
-  numberToReturn: number;
-  query: plugins.bson.Document;
-  returnFieldsSelector?: plugins.bson.Document;
-}
-
-/**
- * Parsed command from any message type
- */
-export interface IParsedCommand {
-  commandName: string;
-  command: plugins.bson.Document;
-  database: string;
-  requestID: number;
-  opCode: number;
-  documentSequences?: Map<string, plugins.bson.Document[]>;
-}
-
-/**
- * Wire Protocol parser and encoder
- */
-export class WireProtocol {
-  /**
-   * Parse a complete message from a buffer
-   * Returns the parsed command and the number of bytes consumed
-   */
-  static parseMessage(buffer: Buffer): { command: IParsedCommand; bytesConsumed: number } | null {
-    if (buffer.length < 16) {
-      return null; // Not enough data for header
-    }
-
-    const header = this.parseHeader(buffer);
-
-    if (buffer.length < header.messageLength) {
-      return null; // Not enough data for complete message
-    }
-
-    const messageBuffer = buffer.subarray(0, header.messageLength);
-
-    switch (header.opCode) {
-      case OP_MSG:
-        return this.parseOpMsg(messageBuffer, header);
-      case OP_QUERY:
-        return this.parseOpQuery(messageBuffer, header);
-      default:
-        throw new Error(`Unsupported opCode: ${header.opCode}`);
-    }
-  }
-
-  /**
-   * Parse message header (16 bytes)
-   */
-  private static parseHeader(buffer: Buffer): IMessageHeader {
-    return {
-      messageLength: buffer.readInt32LE(0),
-      requestID: buffer.readInt32LE(4),
-      responseTo: buffer.readInt32LE(8),
-      opCode: buffer.readInt32LE(12),
-    };
-  }
-
-  /**
-   * Parse OP_MSG message
-   */
-  private static parseOpMsg(buffer: Buffer, header: IMessageHeader): { command: IParsedCommand; bytesConsumed: number } {
-    let offset = 16; // Skip header
-
-    const flagBits = buffer.readUInt32LE(offset);
-    offset += 4;
-
-    const sections: IOpMsgSection[] = [];
-    const documentSequences = new Map<string, plugins.bson.Document[]>();
-
-    // Parse sections until we reach the end (or checksum)
-    const messageEnd = (flagBits & MSG_FLAG_CHECKSUM_PRESENT)
-      ? header.messageLength - 4
-      : header.messageLength;
-
-    while (offset < messageEnd) {
-      const sectionType = buffer.readUInt8(offset);
-      offset += 1;
-
-      if (sectionType === SECTION_BODY) {
-        // Single BSON document
-        const docSize = buffer.readInt32LE(offset);
-        const docBuffer = buffer.subarray(offset, offset + docSize);
-        const doc = plugins.bson.deserialize(docBuffer);
-        sections.push({ type: SECTION_BODY, payload: doc });
-        offset += docSize;
-      } else if (sectionType === SECTION_DOCUMENT_SEQUENCE) {
-        // Document sequence
-        const sectionSize = buffer.readInt32LE(offset);
-        const sectionEnd = offset + sectionSize;
-        offset += 4;
-
-        // Read sequence identifier (C string)
-        let identifierEnd = offset;
-        while (buffer[identifierEnd] !== 0 && identifierEnd < sectionEnd) {
-          identifierEnd++;
-        }
-        const identifier = buffer.subarray(offset, identifierEnd).toString('utf8');
-        offset = identifierEnd + 1; // Skip null terminator
-
-        // Read documents
-        const documents: plugins.bson.Document[] = [];
-        while (offset < sectionEnd) {
-          const docSize = buffer.readInt32LE(offset);
-          const docBuffer = buffer.subarray(offset, offset + docSize);
-          documents.push(plugins.bson.deserialize(docBuffer));
-          offset += docSize;
-        }
-
-        sections.push({
-          type: SECTION_DOCUMENT_SEQUENCE,
-          payload: {},
-          sequenceIdentifier: identifier,
-          documents
-        });
-        documentSequences.set(identifier, documents);
-      } else {
-        throw new Error(`Unknown section type: ${sectionType}`);
-      }
-    }
-
-    // The first section body contains the command
-    const commandSection = sections.find(s => s.type === SECTION_BODY);
-    if (!commandSection) {
-      throw new Error('OP_MSG missing command body section');
-    }
-
-    const command = commandSection.payload;
-    const commandName = Object.keys(command)[0];
-    const database = command.$db || 'admin';
-
-    return {
-      command: {
-        commandName,
-        command,
-        database,
-        requestID: header.requestID,
-        opCode: header.opCode,
-        documentSequences: documentSequences.size > 0 ? documentSequences : undefined,
-      },
-      bytesConsumed: header.messageLength,
-    };
-  }
-
-  /**
-   * Parse OP_QUERY message (legacy, used for initial handshake)
-   */
-  private static parseOpQuery(buffer: Buffer, header: IMessageHeader): { command: IParsedCommand; bytesConsumed: number } {
-    let offset = 16; // Skip header
-
-    const flags = buffer.readInt32LE(offset);
-    offset += 4;
-
-    // Read full collection name (C string)
-    let nameEnd = offset;
-    while (buffer[nameEnd] !== 0 && nameEnd < buffer.length) {
-      nameEnd++;
-    }
-    const fullCollectionName = buffer.subarray(offset, nameEnd).toString('utf8');
-    offset = nameEnd + 1;
-
-    const numberToSkip = buffer.readInt32LE(offset);
-    offset += 4;
-
-    const numberToReturn = buffer.readInt32LE(offset);
-    offset += 4;
-
-    // Read query document
-    const querySize = buffer.readInt32LE(offset);
-    const queryBuffer = buffer.subarray(offset, offset + querySize);
-    const query = plugins.bson.deserialize(queryBuffer);
-    offset += querySize;
-
-    // Extract database from collection name (format: "dbname.$cmd" or "dbname.collection")
-    const parts = fullCollectionName.split('.');
-    const database = parts[0];
-
-    // For OP_QUERY to .$cmd, the query IS the command
-    let commandName = 'find';
-    let command = query;
-
-    if (parts[1] === '$cmd') {
-      // This is a command
-      commandName = Object.keys(query)[0];
-      // Handle special commands like isMaster, hello
-      if (commandName === 'isMaster' || commandName === 'ismaster') {
-        commandName = 'hello';
-      }
-    }
-
-    return {
-      command: {
-        commandName,
-        command,
-        database,
-        requestID: header.requestID,
-        opCode: header.opCode,
-      },
-      bytesConsumed: header.messageLength,
-    };
-  }
-
-  /**
-   * Encode a response as OP_MSG
-   */
-  static encodeOpMsgResponse(
-    responseTo: number,
-    response: plugins.bson.Document,
-    requestID: number = Math.floor(Math.random() * 0x7FFFFFFF)
-  ): Buffer {
-    // Add $db if not present (optional in response)
-    const responseDoc = { ...response };
-
-    // Serialize the response document
-    const bodyBson = plugins.bson.serialize(responseDoc);
-
-    // Calculate message length
-    // Header (16) + flagBits (4) + section type (1) + body BSON
-    const messageLength = 16 + 4 + 1 + bodyBson.length;
-
-    const buffer = Buffer.alloc(messageLength);
-    let offset = 0;
-
-    // Write header
-    buffer.writeInt32LE(messageLength, offset);     // messageLength
-    offset += 4;
-    buffer.writeInt32LE(requestID, offset);         // requestID
-    offset += 4;
-    buffer.writeInt32LE(responseTo, offset);        // responseTo
-    offset += 4;
-    buffer.writeInt32LE(OP_MSG, offset);            // opCode
-    offset += 4;
-
-    // Write flagBits (0 = no flags)
-    buffer.writeUInt32LE(0, offset);
-    offset += 4;
-
-    // Write section type 0 (body)
-    buffer.writeUInt8(SECTION_BODY, offset);
-    offset += 1;
-
-    // Write body BSON
-    Buffer.from(bodyBson).copy(buffer, offset);
-
-    return buffer;
-  }
-
-  /**
-   * Encode a response as OP_REPLY (legacy, for OP_QUERY responses)
-   */
-  static encodeOpReplyResponse(
-    responseTo: number,
-    documents: plugins.bson.Document[],
-    requestID: number = Math.floor(Math.random() * 0x7FFFFFFF),
-    cursorId: bigint = BigInt(0)
-  ): Buffer {
-    // Serialize all documents
-    const docBuffers = documents.map(doc => plugins.bson.serialize(doc));
-    const totalDocsSize = docBuffers.reduce((sum, buf) => sum + buf.length, 0);
-
-    // Message format:
-    // Header (16) + responseFlags (4) + cursorID (8) + startingFrom (4) + numberReturned (4) + documents
-    const messageLength = 16 + 4 + 8 + 4 + 4 + totalDocsSize;
-
-    const buffer = Buffer.alloc(messageLength);
-    let offset = 0;
-
-    // Write header
-    buffer.writeInt32LE(messageLength, offset);     // messageLength
-    offset += 4;
-    buffer.writeInt32LE(requestID, offset);         // requestID
-    offset += 4;
-    buffer.writeInt32LE(responseTo, offset);        // responseTo
-    offset += 4;
-    buffer.writeInt32LE(OP_REPLY, offset);          // opCode
-    offset += 4;
-
-    // Write OP_REPLY fields
-    buffer.writeInt32LE(0, offset);                 // responseFlags (0 = no errors)
-    offset += 4;
-    buffer.writeBigInt64LE(cursorId, offset);       // cursorID
-    offset += 8;
-    buffer.writeInt32LE(0, offset);                 // startingFrom
-    offset += 4;
-    buffer.writeInt32LE(documents.length, offset);  // numberReturned
-    offset += 4;
-
-    // Write documents
-    for (const docBuffer of docBuffers) {
-      Buffer.from(docBuffer).copy(buffer, offset);
-      offset += docBuffer.length;
-    }
-
-    return buffer;
-  }
-
-  /**
-   * Encode an error response
-   */
-  static encodeErrorResponse(
-    responseTo: number,
-    errorCode: number,
-    errorMessage: string,
-    commandName?: string
-  ): Buffer {
-    const response: plugins.bson.Document = {
-      ok: 0,
-      errmsg: errorMessage,
-      code: errorCode,
-      codeName: this.getErrorCodeName(errorCode),
-    };
-
-    return this.encodeOpMsgResponse(responseTo, response);
-  }
-
-  /**
-   * Get error code name from error code
-   */
-  private static getErrorCodeName(code: number): string {
-    const errorNames: Record<number, string> = {
-      0: 'OK',
-      1: 'InternalError',
-      2: 'BadValue',
-      11000: 'DuplicateKey',
-      11001: 'DuplicateKeyValue',
-      13: 'Unauthorized',
-      26: 'NamespaceNotFound',
-      27: 'IndexNotFound',
-      48: 'NamespaceExists',
-      59: 'CommandNotFound',
-      66: 'ImmutableField',
-      73: 'InvalidNamespace',
-      85: 'IndexOptionsConflict',
-      112: 'WriteConflict',
-      121: 'DocumentValidationFailure',
-      211: 'KeyNotFound',
-      251: 'NoSuchTransaction',
-    };
-
-    return errorNames[code] || 'UnknownError';
-  }
-}

ts/ts_tsmdb/server/handlers/AdminHandler.ts

@@ -1,719 +0,0 @@
-import * as plugins from '../../plugins.js';
-import type { ICommandHandler, IHandlerContext } from '../CommandRouter.js';
-import { SessionEngine } from '../../engine/SessionEngine.js';
-
-/**
- * AdminHandler - Handles administrative commands
- */
-export class AdminHandler implements ICommandHandler {
-  async handle(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { command } = context;
-
-    // Determine which command to handle
-    if (command.ping !== undefined) {
-      return this.handlePing(context);
-    } else if (command.listDatabases !== undefined) {
-      return this.handleListDatabases(context);
-    } else if (command.listCollections !== undefined) {
-      return this.handleListCollections(context);
-    } else if (command.drop !== undefined) {
-      return this.handleDrop(context);
-    } else if (command.dropDatabase !== undefined) {
-      return this.handleDropDatabase(context);
-    } else if (command.create !== undefined) {
-      return this.handleCreate(context);
-    } else if (command.serverStatus !== undefined) {
-      return this.handleServerStatus(context);
-    } else if (command.buildInfo !== undefined) {
-      return this.handleBuildInfo(context);
-    } else if (command.whatsmyuri !== undefined) {
-      return this.handleWhatsMyUri(context);
-    } else if (command.getLog !== undefined) {
-      return this.handleGetLog(context);
-    } else if (command.hostInfo !== undefined) {
-      return this.handleHostInfo(context);
-    } else if (command.replSetGetStatus !== undefined) {
-      return this.handleReplSetGetStatus(context);
-    } else if (command.saslStart !== undefined) {
-      return this.handleSaslStart(context);
-    } else if (command.saslContinue !== undefined) {
-      return this.handleSaslContinue(context);
-    } else if (command.endSessions !== undefined) {
-      return this.handleEndSessions(context);
-    } else if (command.abortTransaction !== undefined) {
-      return this.handleAbortTransaction(context);
-    } else if (command.commitTransaction !== undefined) {
-      return this.handleCommitTransaction(context);
-    } else if (command.collStats !== undefined) {
-      return this.handleCollStats(context);
-    } else if (command.dbStats !== undefined) {
-      return this.handleDbStats(context);
-    } else if (command.connectionStatus !== undefined) {
-      return this.handleConnectionStatus(context);
-    } else if (command.currentOp !== undefined) {
-      return this.handleCurrentOp(context);
-    } else if (command.collMod !== undefined) {
-      return this.handleCollMod(context);
-    } else if (command.renameCollection !== undefined) {
-      return this.handleRenameCollection(context);
-    }
-
-    return {
-      ok: 0,
-      errmsg: 'Unknown admin command',
-      code: 59,
-      codeName: 'CommandNotFound',
-    };
-  }
-
-  /**
-   * Handle ping command
-   */
-  private async handlePing(context: IHandlerContext): Promise<plugins.bson.Document> {
-    return { ok: 1 };
-  }
-
-  /**
-   * Handle listDatabases command
-   */
-  private async handleListDatabases(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, command } = context;
-
-    const dbNames = await storage.listDatabases();
-    const nameOnly = command.nameOnly || false;
-
-    if (nameOnly) {
-      return {
-        ok: 1,
-        databases: dbNames.map(name => ({ name })),
-      };
-    }
-
-    // Build database list with sizes
-    const databases: plugins.bson.Document[] = [];
-    let totalSize = 0;
-
-    for (const name of dbNames) {
-      const collections = await storage.listCollections(name);
-      let dbSize = 0;
-
-      for (const collName of collections) {
-        const docs = await storage.findAll(name, collName);
-        // Estimate size (rough approximation)
-        dbSize += docs.reduce((sum, doc) => sum + JSON.stringify(doc).length, 0);
-      }
-
-      totalSize += dbSize;
-
-      databases.push({
-        name,
-        sizeOnDisk: dbSize,
-        empty: dbSize === 0,
-      });
-    }
-
-    return {
-      ok: 1,
-      databases,
-      totalSize,
-      totalSizeMb: totalSize / (1024 * 1024),
-    };
-  }
-
-  /**
-   * Handle listCollections command
-   */
-  private async handleListCollections(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database, command } = context;
-
-    const filter = command.filter || {};
-    const nameOnly = command.nameOnly || false;
-    const cursor = command.cursor || {};
-    const batchSize = cursor.batchSize || 101;
-
-    const collNames = await storage.listCollections(database);
-
-    let collections: plugins.bson.Document[] = [];
-
-    for (const name of collNames) {
-      // Apply name filter
-      if (filter.name && filter.name !== name) {
-        // Check regex
-        if (filter.name.$regex) {
-          const regex = new RegExp(filter.name.$regex, filter.name.$options);
-          if (!regex.test(name)) continue;
-        } else {
-          continue;
-        }
-      }
-
-      if (nameOnly) {
-        collections.push({ name });
-      } else {
-        collections.push({
-          name,
-          type: 'collection',
-          options: {},
-          info: {
-            readOnly: false,
-            uuid: new plugins.bson.UUID(),
-          },
-          idIndex: {
-            v: 2,
-            key: { _id: 1 },
-            name: '_id_',
-          },
-        });
-      }
-    }
-
-    return {
-      ok: 1,
-      cursor: {
-        id: plugins.bson.Long.fromNumber(0),
-        ns: `${database}.$cmd.listCollections`,
-        firstBatch: collections,
-      },
-    };
-  }
-
-  /**
-   * Handle drop command (drop collection)
-   */
-  private async handleDrop(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database, command } = context;
-
-    const collection = command.drop;
-
-    const existed = await storage.dropCollection(database, collection);
-
-    if (!existed) {
-      return {
-        ok: 0,
-        errmsg: `ns not found ${database}.${collection}`,
-        code: 26,
-        codeName: 'NamespaceNotFound',
-      };
-    }
-
-    return { ok: 1, ns: `${database}.${collection}` };
-  }
-
-  /**
-   * Handle dropDatabase command
-   */
-  private async handleDropDatabase(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database } = context;
-
-    await storage.dropDatabase(database);
-
-    return { ok: 1, dropped: database };
-  }
-
-  /**
-   * Handle create command (create collection)
-   */
-  private async handleCreate(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database, command } = context;
-
-    const collection = command.create;
-
-    // Check if already exists
-    const exists = await storage.collectionExists(database, collection);
-    if (exists) {
-      return {
-        ok: 0,
-        errmsg: `Collection ${database}.${collection} already exists.`,
-        code: 48,
-        codeName: 'NamespaceExists',
-      };
-    }
-
-    await storage.createCollection(database, collection);
-
-    return { ok: 1 };
-  }
-
-  /**
-   * Handle serverStatus command
-   */
-  private async handleServerStatus(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { server, sessionEngine } = context;
-
-    const uptime = server.getUptime();
-    const connections = server.getConnectionCount();
-    const sessions = sessionEngine.listSessions();
-    const sessionsWithTxn = sessionEngine.getSessionsWithTransactions();
-
-    return {
-      ok: 1,
-      host: `${server.host}:${server.port}`,
-      version: '7.0.0',
-      process: 'tsmdb',
-      pid: process.pid,
-      uptime,
-      uptimeMillis: uptime * 1000,
-      uptimeEstimate: uptime,
-      localTime: new Date(),
-      mem: {
-        resident: Math.floor(process.memoryUsage().rss / (1024 * 1024)),
-        virtual: Math.floor(process.memoryUsage().heapTotal / (1024 * 1024)),
-        supported: true,
-      },
-      connections: {
-        current: connections,
-        available: 1000 - connections,
-        totalCreated: connections,
-        active: connections,
-      },
-      logicalSessionRecordCache: {
-        activeSessionsCount: sessions.length,
-        sessionsCollectionJobCount: 0,
-        lastSessionsCollectionJobDurationMillis: 0,
-        lastSessionsCollectionJobTimestamp: new Date(),
-        transactionReaperJobCount: 0,
-        lastTransactionReaperJobDurationMillis: 0,
-        lastTransactionReaperJobTimestamp: new Date(),
-      },
-      transactions: {
-        retriedCommandsCount: 0,
-        retriedStatementsCount: 0,
-        transactionsCollectionWriteCount: 0,
-        currentActive: sessionsWithTxn.length,
-        currentInactive: 0,
-        currentOpen: sessionsWithTxn.length,
-        totalStarted: sessionsWithTxn.length,
-        totalCommitted: 0,
-        totalAborted: 0,
-      },
-      network: {
-        bytesIn: 0,
-        bytesOut: 0,
-        numRequests: 0,
-      },
-      storageEngine: {
-        name: 'tsmdb',
-        supportsCommittedReads: true,
-        persistent: false,
-      },
-    };
-  }
-
-  /**
-   * Handle buildInfo command
-   */
-  private async handleBuildInfo(context: IHandlerContext): Promise<plugins.bson.Document> {
-    return {
-      ok: 1,
-      version: '7.0.0',
-      gitVersion: 'tsmdb',
-      modules: [],
-      allocator: 'system',
-      javascriptEngine: 'none',
-      sysInfo: 'deprecated',
-      versionArray: [7, 0, 0, 0],
-      openssl: {
-        running: 'disabled',
-        compiled: 'disabled',
-      },
-      buildEnvironment: {
-        distmod: 'tsmdb',
-        distarch: process.arch,
-        cc: '',
-        ccflags: '',
-        cxx: '',
-        cxxflags: '',
-        linkflags: '',
-        target_arch: process.arch,
-        target_os: process.platform,
-      },
-      bits: 64,
-      debug: false,
-      maxBsonObjectSize: 16777216,
-      storageEngines: ['tsmdb'],
-    };
-  }
-
-  /**
-   * Handle whatsmyuri command
-   */
-  private async handleWhatsMyUri(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { server } = context;
-    return {
-      ok: 1,
-      you: `127.0.0.1:${server.port}`,
-    };
-  }
-
-  /**
-   * Handle getLog command
-   */
-  private async handleGetLog(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { command } = context;
-
-    if (command.getLog === '*') {
-      return {
-        ok: 1,
-        names: ['global', 'startupWarnings'],
-      };
-    }
-
-    return {
-      ok: 1,
-      totalLinesWritten: 0,
-      log: [],
-    };
-  }
-
-  /**
-   * Handle hostInfo command
-   */
-  private async handleHostInfo(context: IHandlerContext): Promise<plugins.bson.Document> {
-    return {
-      ok: 1,
-      system: {
-        currentTime: new Date(),
-        hostname: 'localhost',
-        cpuAddrSize: 64,
-        memSizeMB: Math.floor(process.memoryUsage().heapTotal / (1024 * 1024)),
-        numCores: 1,
-        cpuArch: process.arch,
-        numaEnabled: false,
-      },
-      os: {
-        type: process.platform,
-        name: process.platform,
-        version: process.version,
-      },
-      extra: {},
-    };
-  }
-
-  /**
-   * Handle replSetGetStatus command
-   */
-  private async handleReplSetGetStatus(context: IHandlerContext): Promise<plugins.bson.Document> {
-    // We're standalone, not a replica set
-    return {
-      ok: 0,
-      errmsg: 'not running with --replSet',
-      code: 76,
-      codeName: 'NoReplicationEnabled',
-    };
-  }
-
-  /**
-   * Handle saslStart command (authentication)
-   */
-  private async handleSaslStart(context: IHandlerContext): Promise<plugins.bson.Document> {
-    // We don't require authentication, but we need to respond properly
-    // to let drivers know auth is "successful"
-    return {
-      ok: 1,
-      conversationId: 1,
-      done: true,
-      payload: Buffer.from([]),
-    };
-  }
-
-  /**
-   * Handle saslContinue command
-   */
-  private async handleSaslContinue(context: IHandlerContext): Promise<plugins.bson.Document> {
-    return {
-      ok: 1,
-      conversationId: 1,
-      done: true,
-      payload: Buffer.from([]),
-    };
-  }
-
-  /**
-   * Handle endSessions command
-   */
-  private async handleEndSessions(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { command, sessionEngine } = context;
-
-    // End each session in the array
-    const sessions = command.endSessions || [];
-    for (const sessionSpec of sessions) {
-      const sessionId = SessionEngine.extractSessionId(sessionSpec);
-      if (sessionId) {
-        await sessionEngine.endSession(sessionId);
-      }
-    }
-
-    return { ok: 1 };
-  }
-
-  /**
-   * Handle abortTransaction command
-   */
-  private async handleAbortTransaction(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { transactionEngine, sessionEngine, txnId, sessionId } = context;
-
-    if (!txnId) {
-      return {
-        ok: 0,
-        errmsg: 'No transaction started',
-        code: 251,
-        codeName: 'NoSuchTransaction',
-      };
-    }
-
-    try {
-      await transactionEngine.abortTransaction(txnId);
-      transactionEngine.endTransaction(txnId);
-      // Update session state
-      if (sessionId) {
-        sessionEngine.endTransaction(sessionId);
-      }
-      return { ok: 1 };
-    } catch (error: any) {
-      return {
-        ok: 0,
-        errmsg: error.message || 'Abort transaction failed',
-        code: error.code || 1,
-        codeName: error.codeName || 'UnknownError',
-      };
-    }
-  }
-
-  /**
-   * Handle commitTransaction command
-   */
-  private async handleCommitTransaction(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { transactionEngine, sessionEngine, txnId, sessionId } = context;
-
-    if (!txnId) {
-      return {
-        ok: 0,
-        errmsg: 'No transaction started',
-        code: 251,
-        codeName: 'NoSuchTransaction',
-      };
-    }
-
-    try {
-      await transactionEngine.commitTransaction(txnId);
-      transactionEngine.endTransaction(txnId);
-      // Update session state
-      if (sessionId) {
-        sessionEngine.endTransaction(sessionId);
-      }
-      return { ok: 1 };
-    } catch (error: any) {
-      // If commit fails, transaction should be aborted
-      try {
-        await transactionEngine.abortTransaction(txnId);
-        transactionEngine.endTransaction(txnId);
-        if (sessionId) {
-          sessionEngine.endTransaction(sessionId);
-        }
-      } catch {
-        // Ignore abort errors
-      }
-
-      if (error.code === 112) {
-        // Write conflict
-        return {
-          ok: 0,
-          errmsg: error.message || 'Write conflict during commit',
-          code: 112,
-          codeName: 'WriteConflict',
-        };
-      }
-
-      return {
-        ok: 0,
-        errmsg: error.message || 'Commit transaction failed',
-        code: error.code || 1,
-        codeName: error.codeName || 'UnknownError',
-      };
-    }
-  }
-
-  /**
-   * Handle collStats command
-   */
-  private async handleCollStats(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database, command } = context;
-
-    const collection = command.collStats;
-
-    const exists = await storage.collectionExists(database, collection);
-    if (!exists) {
-      return {
-        ok: 0,
-        errmsg: `ns not found ${database}.${collection}`,
-        code: 26,
-        codeName: 'NamespaceNotFound',
-      };
-    }
-
-    const docs = await storage.findAll(database, collection);
-    const size = docs.reduce((sum, doc) => sum + JSON.stringify(doc).length, 0);
-    const count = docs.length;
-    const avgObjSize = count > 0 ? size / count : 0;
-
-    const indexes = await storage.getIndexes(database, collection);
-
-    return {
-      ok: 1,
-      ns: `${database}.${collection}`,
-      count,
-      size,
-      avgObjSize,
-      storageSize: size,
-      totalIndexSize: 0,
-      indexSizes: indexes.reduce((acc: any, idx: any) => {
-        acc[idx.name] = 0;
-        return acc;
-      }, {}),
-      nindexes: indexes.length,
-    };
-  }
-
-  /**
-   * Handle dbStats command
-   */
-  private async handleDbStats(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database } = context;
-
-    const collections = await storage.listCollections(database);
-    let totalSize = 0;
-    let totalObjects = 0;
-
-    for (const collName of collections) {
-      const docs = await storage.findAll(database, collName);
-      totalObjects += docs.length;
-      totalSize += docs.reduce((sum, doc) => sum + JSON.stringify(doc).length, 0);
-    }
-
-    return {
-      ok: 1,
-      db: database,
-      collections: collections.length,
-      views: 0,
-      objects: totalObjects,
-      avgObjSize: totalObjects > 0 ? totalSize / totalObjects : 0,
-      dataSize: totalSize,
-      storageSize: totalSize,
-      indexes: collections.length, // At least _id index per collection
-      indexSize: 0,
-      totalSize,
-    };
-  }
-
-  /**
-   * Handle connectionStatus command
-   */
-  private async handleConnectionStatus(context: IHandlerContext): Promise<plugins.bson.Document> {
-    return {
-      ok: 1,
-      authInfo: {
-        authenticatedUsers: [],
-        authenticatedUserRoles: [],
-      },
-    };
-  }
-
-  /**
-   * Handle currentOp command
-   */
-  private async handleCurrentOp(context: IHandlerContext): Promise<plugins.bson.Document> {
-    return {
-      ok: 1,
-      inprog: [],
-    };
-  }
-
-  /**
-   * Handle collMod command
-   */
-  private async handleCollMod(context: IHandlerContext): Promise<plugins.bson.Document> {
-    // We don't support modifying collection options, but acknowledge the command
-    return { ok: 1 };
-  }
-
-  /**
-   * Handle renameCollection command
-   */
-  private async handleRenameCollection(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, command } = context;
-
-    const from = command.renameCollection;
-    const to = command.to;
-    const dropTarget = command.dropTarget || false;
-
-    if (!from || !to) {
-      return {
-        ok: 0,
-        errmsg: 'renameCollection requires both source and target',
-        code: 2,
-        codeName: 'BadValue',
-      };
-    }
-
-    // Parse namespace (format: "db.collection")
-    const fromParts = from.split('.');
-    const toParts = to.split('.');
-
-    if (fromParts.length < 2 || toParts.length < 2) {
-      return {
-        ok: 0,
-        errmsg: 'Invalid namespace format',
-        code: 73,
-        codeName: 'InvalidNamespace',
-      };
-    }
-
-    const fromDb = fromParts[0];
-    const fromColl = fromParts.slice(1).join('.');
-    const toDb = toParts[0];
-    const toColl = toParts.slice(1).join('.');
-
-    // Check if source exists
-    const sourceExists = await storage.collectionExists(fromDb, fromColl);
-    if (!sourceExists) {
-      return {
-        ok: 0,
-        errmsg: `source namespace ${from} does not exist`,
-        code: 26,
-        codeName: 'NamespaceNotFound',
-      };
-    }
-
-    // Check if target exists
-    const targetExists = await storage.collectionExists(toDb, toColl);
-    if (targetExists) {
-      if (dropTarget) {
-        await storage.dropCollection(toDb, toColl);
-      } else {
-        return {
-          ok: 0,
-          errmsg: `target namespace ${to} already exists`,
-          code: 48,
-          codeName: 'NamespaceExists',
-        };
-      }
-    }
-
-    // Same database rename
-    if (fromDb === toDb) {
-      await storage.renameCollection(fromDb, fromColl, toColl);
-    } else {
-      // Cross-database rename: copy documents then drop source
-      await storage.createCollection(toDb, toColl);
-      const docs = await storage.findAll(fromDb, fromColl);
-
-      for (const doc of docs) {
-        await storage.insertOne(toDb, toColl, doc);
-      }
-
-      await storage.dropCollection(fromDb, fromColl);
-    }
-
-    return { ok: 1 };
-  }
-}

ts/ts_tsmdb/server/handlers/AggregateHandler.ts

@@ -1,342 +0,0 @@
-import * as plugins from '../../plugins.js';
-import type { ICommandHandler, IHandlerContext, ICursorState } from '../CommandRouter.js';
-import { AggregationEngine } from '../../engine/AggregationEngine.js';
-
-/**
- * AggregateHandler - Handles aggregate command
- */
-export class AggregateHandler implements ICommandHandler {
-  private cursors: Map<bigint, ICursorState>;
-  private nextCursorId: () => bigint;
-
-  constructor(
-    cursors: Map<bigint, ICursorState>,
-    nextCursorId: () => bigint
-  ) {
-    this.cursors = cursors;
-    this.nextCursorId = nextCursorId;
-  }
-
-  async handle(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database, command } = context;
-
-    const collection = command.aggregate;
-    const pipeline = command.pipeline || [];
-    const cursor = command.cursor || {};
-    const batchSize = cursor.batchSize || 101;
-
-    // Validate
-    if (typeof collection !== 'string' && collection !== 1) {
-      return {
-        ok: 0,
-        errmsg: 'aggregate command requires a collection name or 1',
-        code: 2,
-        codeName: 'BadValue',
-      };
-    }
-
-    if (!Array.isArray(pipeline)) {
-      return {
-        ok: 0,
-        errmsg: 'pipeline must be an array',
-        code: 2,
-        codeName: 'BadValue',
-      };
-    }
-
-    try {
-      // Get source documents
-      let documents: plugins.bson.Document[] = [];
-
-      if (collection === 1 || collection === '1') {
-        // Database-level aggregation (e.g., $listLocalSessions)
-        documents = [];
-      } else {
-        // Collection-level aggregation
-        const exists = await storage.collectionExists(database, collection);
-        if (exists) {
-          documents = await storage.findAll(database, collection);
-        }
-      }
-
-      // Handle $lookup and $graphLookup stages that reference other collections
-      const processedPipeline = await this.preprocessPipeline(
-        storage,
-        database,
-        pipeline,
-        documents
-      );
-
-      // Run aggregation
-      let results: plugins.bson.Document[];
-
-      // Check for special stages that we handle manually
-      if (this.hasSpecialStages(pipeline)) {
-        results = await this.executeWithSpecialStages(
-          storage,
-          database,
-          documents,
-          pipeline
-        );
-      } else {
-        results = AggregationEngine.aggregate(documents as any, processedPipeline);
-      }
-
-      // Handle $out and $merge stages
-      const lastStage = pipeline[pipeline.length - 1];
-      if (lastStage && lastStage.$out) {
-        await this.handleOut(storage, database, results, lastStage.$out);
-        return { ok: 1, cursor: { id: plugins.bson.Long.fromNumber(0), ns: `${database}.${collection}`, firstBatch: [] } };
-      }
-
-      if (lastStage && lastStage.$merge) {
-        await this.handleMerge(storage, database, results, lastStage.$merge);
-        return { ok: 1, cursor: { id: plugins.bson.Long.fromNumber(0), ns: `${database}.${collection}`, firstBatch: [] } };
-      }
-
-      // Build cursor response
-      const effectiveBatchSize = Math.min(batchSize, results.length);
-      const firstBatch = results.slice(0, effectiveBatchSize);
-      const remaining = results.slice(effectiveBatchSize);
-
-      let cursorId = BigInt(0);
-      if (remaining.length > 0) {
-        cursorId = this.nextCursorId();
-        this.cursors.set(cursorId, {
-          id: cursorId,
-          database,
-          collection: typeof collection === 'string' ? collection : '$cmd.aggregate',
-          documents: remaining,
-          position: 0,
-          batchSize,
-          createdAt: new Date(),
-        });
-      }
-
-      return {
-        ok: 1,
-        cursor: {
-          id: plugins.bson.Long.fromBigInt(cursorId),
-          ns: `${database}.${typeof collection === 'string' ? collection : '$cmd.aggregate'}`,
-          firstBatch,
-        },
-      };
-    } catch (error: any) {
-      return {
-        ok: 0,
-        errmsg: error.message || 'Aggregation failed',
-        code: 1,
-        codeName: 'InternalError',
-      };
-    }
-  }
-
-  /**
-   * Preprocess pipeline to handle cross-collection lookups
-   */
-  private async preprocessPipeline(
-    storage: any,
-    database: string,
-    pipeline: plugins.bson.Document[],
-    documents: plugins.bson.Document[]
-  ): Promise<plugins.bson.Document[]> {
-    // For now, return the pipeline as-is
-    // Cross-collection lookups are handled in executeWithSpecialStages
-    return pipeline;
-  }
-
-  /**
-   * Check if pipeline has stages that need special handling
-   */
-  private hasSpecialStages(pipeline: plugins.bson.Document[]): boolean {
-    return pipeline.some(stage =>
-      stage.$lookup ||
-      stage.$graphLookup ||
-      stage.$unionWith
-    );
-  }
-
-  /**
-   * Execute pipeline with special stage handling
-   */
-  private async executeWithSpecialStages(
-    storage: any,
-    database: string,
-    documents: plugins.bson.Document[],
-    pipeline: plugins.bson.Document[]
-  ): Promise<plugins.bson.Document[]> {
-    let results: plugins.bson.Document[] = [...documents];
-
-    for (const stage of pipeline) {
-      if (stage.$lookup) {
-        const lookupSpec = stage.$lookup;
-        const fromCollection = lookupSpec.from;
-
-        // Get foreign collection documents
-        const foreignExists = await storage.collectionExists(database, fromCollection);
-        const foreignDocs = foreignExists
-          ? await storage.findAll(database, fromCollection)
-          : [];
-
-        results = AggregationEngine.executeLookup(results as any, lookupSpec, foreignDocs);
-      } else if (stage.$graphLookup) {
-        const graphLookupSpec = stage.$graphLookup;
-        const fromCollection = graphLookupSpec.from;
-
-        const foreignExists = await storage.collectionExists(database, fromCollection);
-        const foreignDocs = foreignExists
-          ? await storage.findAll(database, fromCollection)
-          : [];
-
-        results = AggregationEngine.executeGraphLookup(results as any, graphLookupSpec, foreignDocs);
-      } else if (stage.$unionWith) {
-        let unionSpec = stage.$unionWith;
-        let unionColl: string;
-        let unionPipeline: plugins.bson.Document[] | undefined;
-
-        if (typeof unionSpec === 'string') {
-          unionColl = unionSpec;
-        } else {
-          unionColl = unionSpec.coll;
-          unionPipeline = unionSpec.pipeline;
-        }
-
-        const unionExists = await storage.collectionExists(database, unionColl);
-        const unionDocs = unionExists
-          ? await storage.findAll(database, unionColl)
-          : [];
-
-        results = AggregationEngine.executeUnionWith(results as any, unionDocs, unionPipeline);
-      } else if (stage.$facet) {
-        // Execute each facet pipeline separately
-        const facetResults: plugins.bson.Document = {};
-
-        for (const [facetName, facetPipeline] of Object.entries(stage.$facet)) {
-          const facetDocs = await this.executeWithSpecialStages(
-            storage,
-            database,
-            results,
-            facetPipeline as plugins.bson.Document[]
-          );
-          facetResults[facetName] = facetDocs;
-        }
-
-        results = [facetResults];
-      } else {
-        // Regular stage - pass to mingo
-        results = AggregationEngine.aggregate(results as any, [stage]);
-      }
-    }
-
-    return results;
-  }
-
-  /**
-   * Handle $out stage - write results to a collection
-   */
-  private async handleOut(
-    storage: any,
-    database: string,
-    results: plugins.bson.Document[],
-    outSpec: string | { db?: string; coll: string }
-  ): Promise<void> {
-    let targetDb = database;
-    let targetColl: string;
-
-    if (typeof outSpec === 'string') {
-      targetColl = outSpec;
-    } else {
-      targetDb = outSpec.db || database;
-      targetColl = outSpec.coll;
-    }
-
-    // Drop existing collection
-    await storage.dropCollection(targetDb, targetColl);
-
-    // Create new collection and insert results
-    await storage.createCollection(targetDb, targetColl);
-
-    for (const doc of results) {
-      if (!doc._id) {
-        doc._id = new plugins.bson.ObjectId();
-      }
-      await storage.insertOne(targetDb, targetColl, doc);
-    }
-  }
-
-  /**
-   * Handle $merge stage - merge results into a collection
-   */
-  private async handleMerge(
-    storage: any,
-    database: string,
-    results: plugins.bson.Document[],
-    mergeSpec: any
-  ): Promise<void> {
-    let targetDb = database;
-    let targetColl: string;
-
-    if (typeof mergeSpec === 'string') {
-      targetColl = mergeSpec;
-    } else if (typeof mergeSpec.into === 'string') {
-      targetColl = mergeSpec.into;
-    } else {
-      targetDb = mergeSpec.into.db || database;
-      targetColl = mergeSpec.into.coll;
-    }
-
-    const on = mergeSpec.on || '_id';
-    const whenMatched = mergeSpec.whenMatched || 'merge';
-    const whenNotMatched = mergeSpec.whenNotMatched || 'insert';
-
-    // Ensure target collection exists
-    await storage.createCollection(targetDb, targetColl);
-
-    for (const doc of results) {
-      // Find matching document
-      const existingDocs = await storage.findAll(targetDb, targetColl);
-      const onFields = Array.isArray(on) ? on : [on];
-
-      let matchingDoc = null;
-      for (const existing of existingDocs) {
-        let matches = true;
-        for (const field of onFields) {
-          if (JSON.stringify(existing[field]) !== JSON.stringify(doc[field])) {
-            matches = false;
-            break;
-          }
-        }
-        if (matches) {
-          matchingDoc = existing;
-          break;
-        }
-      }
-
-      if (matchingDoc) {
-        // Handle whenMatched
-        if (whenMatched === 'replace') {
-          await storage.updateById(targetDb, targetColl, matchingDoc._id, doc);
-        } else if (whenMatched === 'keepExisting') {
-          // Do nothing
-        } else if (whenMatched === 'merge') {
-          const merged = { ...matchingDoc, ...doc };
-          await storage.updateById(targetDb, targetColl, matchingDoc._id, merged);
-        } else if (whenMatched === 'fail') {
-          throw new Error('Document matched but whenMatched is fail');
-        }
-      } else {
-        // Handle whenNotMatched
-        if (whenNotMatched === 'insert') {
-          if (!doc._id) {
-            doc._id = new plugins.bson.ObjectId();
-          }
-          await storage.insertOne(targetDb, targetColl, doc);
-        } else if (whenNotMatched === 'discard') {
-          // Do nothing
-        } else if (whenNotMatched === 'fail') {
-          throw new Error('Document not matched but whenNotMatched is fail');
-        }
-      }
-    }
-  }
-}

ts/ts_tsmdb/server/handlers/DeleteHandler.ts

@@ -1,115 +0,0 @@
-import * as plugins from '../../plugins.js';
-import type { ICommandHandler, IHandlerContext } from '../CommandRouter.js';
-import type { IStoredDocument } from '../../types/interfaces.js';
-import { QueryEngine } from '../../engine/QueryEngine.js';
-
-/**
- * DeleteHandler - Handles delete commands
- */
-export class DeleteHandler implements ICommandHandler {
-  async handle(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database, command, documentSequences } = context;
-
-    const collection = command.delete;
-    if (typeof collection !== 'string') {
-      return {
-        ok: 0,
-        errmsg: 'delete command requires a collection name',
-        code: 2,
-        codeName: 'BadValue',
-      };
-    }
-
-    // Get deletes from command or document sequences
-    let deletes: plugins.bson.Document[] = command.deletes || [];
-
-    // Check for OP_MSG document sequences
-    if (documentSequences && documentSequences.has('deletes')) {
-      deletes = documentSequences.get('deletes')!;
-    }
-
-    if (!Array.isArray(deletes) || deletes.length === 0) {
-      return {
-        ok: 0,
-        errmsg: 'delete command requires deletes array',
-        code: 2,
-        codeName: 'BadValue',
-      };
-    }
-
-    const ordered = command.ordered !== false;
-    const writeErrors: plugins.bson.Document[] = [];
-    let totalDeleted = 0;
-
-    // Check if collection exists
-    const exists = await storage.collectionExists(database, collection);
-    if (!exists) {
-      // Collection doesn't exist, return success with 0 deleted
-      return { ok: 1, n: 0 };
-    }
-
-    const indexEngine = context.getIndexEngine(collection);
-
-    for (let i = 0; i < deletes.length; i++) {
-      const deleteSpec = deletes[i];
-      const filter = deleteSpec.q || deleteSpec.filter || {};
-      const limit = deleteSpec.limit;
-
-      // limit: 0 means delete all matching, limit: 1 means delete one
-      const deleteAll = limit === 0;
-
-      try {
-        // Try to use index-accelerated query
-        const candidateIds = await indexEngine.findCandidateIds(filter);
-
-        let documents: IStoredDocument[];
-        if (candidateIds !== null) {
-          documents = await storage.findByIds(database, collection, candidateIds);
-        } else {
-          documents = await storage.findAll(database, collection);
-        }
-
-        // Apply filter
-        const matchingDocs = QueryEngine.filter(documents, filter);
-
-        if (matchingDocs.length === 0) {
-          continue;
-        }
-
-        // Determine which documents to delete
-        const docsToDelete = deleteAll ? matchingDocs : matchingDocs.slice(0, 1);
-
-        // Update indexes for deleted documents
-        for (const doc of docsToDelete) {
-          await indexEngine.onDelete(doc as any);
-        }
-
-        // Delete the documents
-        const idsToDelete = docsToDelete.map(doc => doc._id);
-        const deleted = await storage.deleteByIds(database, collection, idsToDelete);
-        totalDeleted += deleted;
-      } catch (error: any) {
-        writeErrors.push({
-          index: i,
-          code: error.code || 1,
-          errmsg: error.message || 'Delete failed',
-        });
-
-        if (ordered) {
-          break;
-        }
-      }
-    }
-
-    const response: plugins.bson.Document = {
-      ok: 1,
-      n: totalDeleted,
-    };
-
-    if (writeErrors.length > 0) {
-      response.writeErrors = writeErrors;
-    }
-
-    return response;
-  }
-}

ts/ts_tsmdb/server/handlers/FindHandler.ts

@@ -1,330 +0,0 @@
-import * as plugins from '../../plugins.js';
-import type { ICommandHandler, IHandlerContext, ICursorState } from '../CommandRouter.js';
-import type { IStoredDocument } from '../../types/interfaces.js';
-import { QueryEngine } from '../../engine/QueryEngine.js';
-
-/**
- * FindHandler - Handles find, getMore, killCursors, count, distinct commands
- */
-export class FindHandler implements ICommandHandler {
-  private cursors: Map<bigint, ICursorState>;
-  private nextCursorId: () => bigint;
-
-  constructor(
-    cursors: Map<bigint, ICursorState>,
-    nextCursorId: () => bigint
-  ) {
-    this.cursors = cursors;
-    this.nextCursorId = nextCursorId;
-  }
-
-  async handle(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { command } = context;
-
-    // Determine which operation to perform
-    if (command.find) {
-      return this.handleFind(context);
-    } else if (command.getMore !== undefined) {
-      return this.handleGetMore(context);
-    } else if (command.killCursors) {
-      return this.handleKillCursors(context);
-    } else if (command.count) {
-      return this.handleCount(context);
-    } else if (command.distinct) {
-      return this.handleDistinct(context);
-    }
-
-    return {
-      ok: 0,
-      errmsg: 'Unknown find-related command',
-      code: 59,
-      codeName: 'CommandNotFound',
-    };
-  }
-
-  /**
-   * Handle find command
-   */
-  private async handleFind(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database, command, getIndexEngine } = context;
-
-    const collection = command.find;
-    const filter = command.filter || {};
-    const projection = command.projection;
-    const sort = command.sort;
-    const skip = command.skip || 0;
-    const limit = command.limit || 0;
-    const batchSize = command.batchSize || 101;
-    const singleBatch = command.singleBatch || false;
-
-    // Ensure collection exists
-    const exists = await storage.collectionExists(database, collection);
-    if (!exists) {
-      // Return empty cursor for non-existent collection
-      return {
-        ok: 1,
-        cursor: {
-          id: plugins.bson.Long.fromNumber(0),
-          ns: `${database}.${collection}`,
-          firstBatch: [],
-        },
-      };
-    }
-
-    // Try to use index-accelerated query
-    const indexEngine = getIndexEngine(collection);
-    const candidateIds = await indexEngine.findCandidateIds(filter);
-
-    let documents: IStoredDocument[];
-    if (candidateIds !== null) {
-      // Index hit - fetch only candidate documents
-      documents = await storage.findByIds(database, collection, candidateIds);
-      // Still apply filter for any conditions the index couldn't fully satisfy
-      documents = QueryEngine.filter(documents, filter);
-    } else {
-      // No suitable index - full collection scan
-      documents = await storage.findAll(database, collection);
-      // Apply filter
-      documents = QueryEngine.filter(documents, filter);
-    }
-
-    // Apply sort
-    if (sort) {
-      documents = QueryEngine.sort(documents, sort);
-    }
-
-    // Apply skip
-    if (skip > 0) {
-      documents = documents.slice(skip);
-    }
-
-    // Apply limit
-    if (limit > 0) {
-      documents = documents.slice(0, limit);
-    }
-
-    // Apply projection
-    if (projection) {
-      documents = QueryEngine.project(documents, projection) as any[];
-    }
-
-    // Determine how many documents to return in first batch
-    const effectiveBatchSize = Math.min(batchSize, documents.length);
-    const firstBatch = documents.slice(0, effectiveBatchSize);
-    const remaining = documents.slice(effectiveBatchSize);
-
-    // Create cursor if there are more documents
-    let cursorId = BigInt(0);
-    if (remaining.length > 0 && !singleBatch) {
-      cursorId = this.nextCursorId();
-      this.cursors.set(cursorId, {
-        id: cursorId,
-        database,
-        collection,
-        documents: remaining,
-        position: 0,
-        batchSize,
-        createdAt: new Date(),
-      });
-    }
-
-    return {
-      ok: 1,
-      cursor: {
-        id: plugins.bson.Long.fromBigInt(cursorId),
-        ns: `${database}.${collection}`,
-        firstBatch,
-      },
-    };
-  }
-
-  /**
-   * Handle getMore command
-   */
-  private async handleGetMore(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { database, command } = context;
-
-    const cursorIdInput = command.getMore;
-    const collection = command.collection;
-    const batchSize = command.batchSize || 101;
-
-    // Convert cursorId to bigint
-    let cursorId: bigint;
-    if (typeof cursorIdInput === 'bigint') {
-      cursorId = cursorIdInput;
-    } else if (cursorIdInput instanceof plugins.bson.Long) {
-      cursorId = cursorIdInput.toBigInt();
-    } else {
-      cursorId = BigInt(cursorIdInput);
-    }
-
-    const cursor = this.cursors.get(cursorId);
-    if (!cursor) {
-      return {
-        ok: 0,
-        errmsg: `cursor id ${cursorId} not found`,
-        code: 43,
-        codeName: 'CursorNotFound',
-      };
-    }
-
-    // Verify namespace
-    if (cursor.database !== database || cursor.collection !== collection) {
-      return {
-        ok: 0,
-        errmsg: 'cursor namespace mismatch',
-        code: 43,
-        codeName: 'CursorNotFound',
-      };
-    }
-
-    // Get next batch
-    const start = cursor.position;
-    const end = Math.min(start + batchSize, cursor.documents.length);
-    const nextBatch = cursor.documents.slice(start, end);
-    cursor.position = end;
-
-    // Check if cursor is exhausted
-    let returnCursorId = cursorId;
-    if (cursor.position >= cursor.documents.length) {
-      this.cursors.delete(cursorId);
-      returnCursorId = BigInt(0);
-    }
-
-    return {
-      ok: 1,
-      cursor: {
-        id: plugins.bson.Long.fromBigInt(returnCursorId),
-        ns: `${database}.${collection}`,
-        nextBatch,
-      },
-    };
-  }
-
-  /**
-   * Handle killCursors command
-   */
-  private async handleKillCursors(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { command } = context;
-
-    const collection = command.killCursors;
-    const cursorIds = command.cursors || [];
-
-    const cursorsKilled: plugins.bson.Long[] = [];
-    const cursorsNotFound: plugins.bson.Long[] = [];
-    const cursorsUnknown: plugins.bson.Long[] = [];
-
-    for (const idInput of cursorIds) {
-      let cursorId: bigint;
-      if (typeof idInput === 'bigint') {
-        cursorId = idInput;
-      } else if (idInput instanceof plugins.bson.Long) {
-        cursorId = idInput.toBigInt();
-      } else {
-        cursorId = BigInt(idInput);
-      }
-
-      if (this.cursors.has(cursorId)) {
-        this.cursors.delete(cursorId);
-        cursorsKilled.push(plugins.bson.Long.fromBigInt(cursorId));
-      } else {
-        cursorsNotFound.push(plugins.bson.Long.fromBigInt(cursorId));
-      }
-    }
-
-    return {
-      ok: 1,
-      cursorsKilled,
-      cursorsNotFound,
-      cursorsUnknown,
-      cursorsAlive: [],
-    };
-  }
-
-  /**
-   * Handle count command
-   */
-  private async handleCount(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database, command, getIndexEngine } = context;
-
-    const collection = command.count;
-    const query = command.query || {};
-    const skip = command.skip || 0;
-    const limit = command.limit || 0;
-
-    // Check if collection exists
-    const exists = await storage.collectionExists(database, collection);
-    if (!exists) {
-      return { ok: 1, n: 0 };
-    }
-
-    // Try to use index-accelerated query
-    const indexEngine = getIndexEngine(collection);
-    const candidateIds = await indexEngine.findCandidateIds(query);
-
-    let documents: IStoredDocument[];
-    if (candidateIds !== null) {
-      // Index hit - fetch only candidate documents
-      documents = await storage.findByIds(database, collection, candidateIds);
-      documents = QueryEngine.filter(documents, query);
-    } else {
-      // No suitable index - full collection scan
-      documents = await storage.findAll(database, collection);
-      documents = QueryEngine.filter(documents, query);
-    }
-
-    // Apply skip
-    if (skip > 0) {
-      documents = documents.slice(skip);
-    }
-
-    // Apply limit
-    if (limit > 0) {
-      documents = documents.slice(0, limit);
-    }
-
-    return { ok: 1, n: documents.length };
-  }
-
-  /**
-   * Handle distinct command
-   */
-  private async handleDistinct(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database, command, getIndexEngine } = context;
-
-    const collection = command.distinct;
-    const key = command.key;
-    const query = command.query || {};
-
-    if (!key) {
-      return {
-        ok: 0,
-        errmsg: 'distinct requires a key',
-        code: 2,
-        codeName: 'BadValue',
-      };
-    }
-
-    // Check if collection exists
-    const exists = await storage.collectionExists(database, collection);
-    if (!exists) {
-      return { ok: 1, values: [] };
-    }
-
-    // Try to use index-accelerated query
-    const indexEngine = getIndexEngine(collection);
-    const candidateIds = await indexEngine.findCandidateIds(query);
-
-    let documents: IStoredDocument[];
-    if (candidateIds !== null) {
-      documents = await storage.findByIds(database, collection, candidateIds);
-    } else {
-      documents = await storage.findAll(database, collection);
-    }
-
-    // Get distinct values
-    const values = QueryEngine.distinct(documents, key, query);
-
-    return { ok: 1, values };
-  }
-}

ts/ts_tsmdb/server/handlers/HelloHandler.ts

@@ -1,78 +0,0 @@
-import * as plugins from '../../plugins.js';
-import type { ICommandHandler, IHandlerContext } from '../CommandRouter.js';
-
-/**
- * HelloHandler - Handles hello/isMaster handshake commands
- *
- * This is the first command sent by MongoDB drivers to establish a connection.
- * It returns server capabilities and configuration.
- */
-export class HelloHandler implements ICommandHandler {
-  async handle(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { command, server } = context;
-
-    // Build response with server capabilities
-    const response: plugins.bson.Document = {
-      ismaster: true,
-      ok: 1,
-
-      // Maximum sizes
-      maxBsonObjectSize: 16777216,           // 16 MB
-      maxMessageSizeBytes: 48000000,         // 48 MB
-      maxWriteBatchSize: 100000,             // 100k documents per batch
-
-      // Timestamps
-      localTime: new Date(),
-
-      // Session support
-      logicalSessionTimeoutMinutes: 30,
-
-      // Connection info
-      connectionId: 1,
-
-      // Wire protocol versions (support MongoDB 3.6 through 7.0)
-      minWireVersion: 0,
-      maxWireVersion: 21,
-
-      // Server mode
-      readOnly: false,
-
-      // Topology info (standalone mode)
-      isWritablePrimary: true,
-
-      // Additional info
-      topologyVersion: {
-        processId: new plugins.bson.ObjectId(),
-        counter: plugins.bson.Long.fromNumber(0),
-      },
-    };
-
-    // Handle hello-specific fields
-    if (command.hello || command.hello === 1) {
-      response.helloOk = true;
-    }
-
-    // Handle client metadata
-    if (command.client) {
-      // Client is providing metadata about itself
-      // We just acknowledge it - no need to do anything special
-    }
-
-    // Handle SASL mechanisms query
-    if (command.saslSupportedMechs) {
-      response.saslSupportedMechs = [
-        // We don't actually support auth, but the driver needs to see this
-      ];
-    }
-
-    // Compression support (none for now)
-    if (command.compression) {
-      response.compression = [];
-    }
-
-    // Server version info
-    response.version = '7.0.0';
-
-    return response;
-  }
-}

ts/ts_tsmdb/server/handlers/IndexHandler.ts

@@ -1,207 +0,0 @@
-import * as plugins from '../../plugins.js';
-import type { ICommandHandler, IHandlerContext } from '../CommandRouter.js';
-import { IndexEngine } from '../../engine/IndexEngine.js';
-
-// Cache of index engines per collection
-const indexEngines: Map<string, IndexEngine> = new Map();
-
-/**
- * Get or create an IndexEngine for a collection
- */
-function getIndexEngine(storage: any, database: string, collection: string): IndexEngine {
-  const key = `${database}.${collection}`;
-  let engine = indexEngines.get(key);
-
-  if (!engine) {
-    engine = new IndexEngine(database, collection, storage);
-    indexEngines.set(key, engine);
-  }
-
-  return engine;
-}
-
-/**
- * IndexHandler - Handles createIndexes, dropIndexes, listIndexes commands
- */
-export class IndexHandler implements ICommandHandler {
-  async handle(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { command } = context;
-
-    if (command.createIndexes) {
-      return this.handleCreateIndexes(context);
-    } else if (command.dropIndexes) {
-      return this.handleDropIndexes(context);
-    } else if (command.listIndexes) {
-      return this.handleListIndexes(context);
-    }
-
-    return {
-      ok: 0,
-      errmsg: 'Unknown index command',
-      code: 59,
-      codeName: 'CommandNotFound',
-    };
-  }
-
-  /**
-   * Handle createIndexes command
-   */
-  private async handleCreateIndexes(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database, command } = context;
-
-    const collection = command.createIndexes;
-    const indexes = command.indexes || [];
-
-    if (!Array.isArray(indexes)) {
-      return {
-        ok: 0,
-        errmsg: 'indexes must be an array',
-        code: 2,
-        codeName: 'BadValue',
-      };
-    }
-
-    // Ensure collection exists
-    await storage.createCollection(database, collection);
-
-    const indexEngine = getIndexEngine(storage, database, collection);
-    const createdNames: string[] = [];
-    let numIndexesBefore = 0;
-    let numIndexesAfter = 0;
-
-    try {
-      const existingIndexes = await indexEngine.listIndexes();
-      numIndexesBefore = existingIndexes.length;
-
-      for (const indexSpec of indexes) {
-        const key = indexSpec.key;
-        const options = {
-          name: indexSpec.name,
-          unique: indexSpec.unique,
-          sparse: indexSpec.sparse,
-          expireAfterSeconds: indexSpec.expireAfterSeconds,
-          background: indexSpec.background,
-          partialFilterExpression: indexSpec.partialFilterExpression,
-        };
-
-        const name = await indexEngine.createIndex(key, options);
-        createdNames.push(name);
-      }
-
-      const finalIndexes = await indexEngine.listIndexes();
-      numIndexesAfter = finalIndexes.length;
-    } catch (error: any) {
-      return {
-        ok: 0,
-        errmsg: error.message || 'Failed to create index',
-        code: error.code || 1,
-        codeName: error.codeName || 'InternalError',
-      };
-    }
-
-    return {
-      ok: 1,
-      numIndexesBefore,
-      numIndexesAfter,
-      createdCollectionAutomatically: false,
-      commitQuorum: 'votingMembers',
-    };
-  }
-
-  /**
-   * Handle dropIndexes command
-   */
-  private async handleDropIndexes(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database, command } = context;
-
-    const collection = command.dropIndexes;
-    const indexName = command.index;
-
-    // Check if collection exists
-    const exists = await storage.collectionExists(database, collection);
-    if (!exists) {
-      return {
-        ok: 0,
-        errmsg: `ns not found ${database}.${collection}`,
-        code: 26,
-        codeName: 'NamespaceNotFound',
-      };
-    }
-
-    const indexEngine = getIndexEngine(storage, database, collection);
-
-    try {
-      if (indexName === '*') {
-        // Drop all indexes except _id
-        await indexEngine.dropAllIndexes();
-      } else if (typeof indexName === 'string') {
-        // Drop specific index by name
-        await indexEngine.dropIndex(indexName);
-      } else if (typeof indexName === 'object') {
-        // Drop index by key specification
-        const indexes = await indexEngine.listIndexes();
-        const keyStr = JSON.stringify(indexName);
-
-        for (const idx of indexes) {
-          if (JSON.stringify(idx.key) === keyStr) {
-            await indexEngine.dropIndex(idx.name);
-            break;
-          }
-        }
-      }
-
-      return { ok: 1, nIndexesWas: 1 };
-    } catch (error: any) {
-      return {
-        ok: 0,
-        errmsg: error.message || 'Failed to drop index',
-        code: error.code || 27,
-        codeName: error.codeName || 'IndexNotFound',
-      };
-    }
-  }
-
-  /**
-   * Handle listIndexes command
-   */
-  private async handleListIndexes(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database, command } = context;
-
-    const collection = command.listIndexes;
-    const cursor = command.cursor || {};
-    const batchSize = cursor.batchSize || 101;
-
-    // Check if collection exists
-    const exists = await storage.collectionExists(database, collection);
-    if (!exists) {
-      return {
-        ok: 0,
-        errmsg: `ns not found ${database}.${collection}`,
-        code: 26,
-        codeName: 'NamespaceNotFound',
-      };
-    }
-
-    const indexEngine = getIndexEngine(storage, database, collection);
-    const indexes = await indexEngine.listIndexes();
-
-    // Format indexes for response
-    const indexDocs = indexes.map(idx => ({
-      v: idx.v || 2,
-      key: idx.key,
-      name: idx.name,
-      ...(idx.unique ? { unique: idx.unique } : {}),
-      ...(idx.sparse ? { sparse: idx.sparse } : {}),
-      ...(idx.expireAfterSeconds !== undefined ? { expireAfterSeconds: idx.expireAfterSeconds } : {}),
-    }));
-
-    return {
-      ok: 1,
-      cursor: {
-        id: plugins.bson.Long.fromNumber(0),
-        ns: `${database}.${collection}`,
-        firstBatch: indexDocs,
-      },
-    };
-  }
-}

ts/ts_tsmdb/server/handlers/InsertHandler.ts

@@ -1,97 +0,0 @@
-import * as plugins from '../../plugins.js';
-import type { ICommandHandler, IHandlerContext } from '../CommandRouter.js';
-import type { IStoredDocument } from '../../types/interfaces.js';
-
-/**
- * InsertHandler - Handles insert commands
- */
-export class InsertHandler implements ICommandHandler {
-  async handle(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database, command, documentSequences } = context;
-
-    const collection = command.insert;
-    if (typeof collection !== 'string') {
-      return {
-        ok: 0,
-        errmsg: 'insert command requires a collection name',
-        code: 2,
-        codeName: 'BadValue',
-      };
-    }
-
-    // Get documents from command or document sequences
-    let documents: plugins.bson.Document[] = command.documents || [];
-
-    // Check for OP_MSG document sequences (for bulk inserts)
-    if (documentSequences && documentSequences.has('documents')) {
-      documents = documentSequences.get('documents')!;
-    }
-
-    if (!Array.isArray(documents) || documents.length === 0) {
-      return {
-        ok: 0,
-        errmsg: 'insert command requires documents array',
-        code: 2,
-        codeName: 'BadValue',
-      };
-    }
-
-    const ordered = command.ordered !== false;
-    const writeErrors: plugins.bson.Document[] = [];
-    let insertedCount = 0;
-
-    // Ensure collection exists
-    await storage.createCollection(database, collection);
-
-    const indexEngine = context.getIndexEngine(collection);
-
-    // Insert documents
-    for (let i = 0; i < documents.length; i++) {
-      const doc = documents[i];
-
-      try {
-        // Ensure _id exists
-        if (!doc._id) {
-          doc._id = new plugins.bson.ObjectId();
-        }
-
-        // Check index constraints before insert (doc now has _id)
-        await indexEngine.onInsert(doc as IStoredDocument);
-
-        await storage.insertOne(database, collection, doc);
-        insertedCount++;
-      } catch (error: any) {
-        const writeError: plugins.bson.Document = {
-          index: i,
-          code: error.code || 11000,
-          errmsg: error.message || 'Insert failed',
-        };
-
-        // Check for duplicate key error
-        if (error.message?.includes('Duplicate key')) {
-          writeError.code = 11000;
-          writeError.keyPattern = { _id: 1 };
-          writeError.keyValue = { _id: doc._id };
-        }
-
-        writeErrors.push(writeError);
-
-        if (ordered) {
-          // Stop on first error for ordered inserts
-          break;
-        }
-      }
-    }
-
-    const response: plugins.bson.Document = {
-      ok: 1,
-      n: insertedCount,
-    };
-
-    if (writeErrors.length > 0) {
-      response.writeErrors = writeErrors;
-    }
-
-    return response;
-  }
-}

ts/ts_tsmdb/server/handlers/UpdateHandler.ts

@@ -1,344 +0,0 @@
-import * as plugins from '../../plugins.js';
-import type { ICommandHandler, IHandlerContext } from '../CommandRouter.js';
-import type { IStoredDocument } from '../../types/interfaces.js';
-import { QueryEngine } from '../../engine/QueryEngine.js';
-import { UpdateEngine } from '../../engine/UpdateEngine.js';
-
-/**
- * UpdateHandler - Handles update, findAndModify commands
- */
-export class UpdateHandler implements ICommandHandler {
-  async handle(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { command } = context;
-
-    // Check findAndModify first since it also has an 'update' field
-    if (command.findAndModify) {
-      return this.handleFindAndModify(context);
-    } else if (command.update && typeof command.update === 'string') {
-      // 'update' command has collection name as the value
-      return this.handleUpdate(context);
-    }
-
-    return {
-      ok: 0,
-      errmsg: 'Unknown update-related command',
-      code: 59,
-      codeName: 'CommandNotFound',
-    };
-  }
-
-  /**
-   * Handle update command
-   */
-  private async handleUpdate(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database, command, documentSequences } = context;
-
-    const collection = command.update;
-    if (typeof collection !== 'string') {
-      return {
-        ok: 0,
-        errmsg: 'update command requires a collection name',
-        code: 2,
-        codeName: 'BadValue',
-      };
-    }
-
-    // Get updates from command or document sequences
-    let updates: plugins.bson.Document[] = command.updates || [];
-
-    // Check for OP_MSG document sequences
-    if (documentSequences && documentSequences.has('updates')) {
-      updates = documentSequences.get('updates')!;
-    }
-
-    if (!Array.isArray(updates) || updates.length === 0) {
-      return {
-        ok: 0,
-        errmsg: 'update command requires updates array',
-        code: 2,
-        codeName: 'BadValue',
-      };
-    }
-
-    const ordered = command.ordered !== false;
-    const writeErrors: plugins.bson.Document[] = [];
-    let totalMatched = 0;
-    let totalModified = 0;
-    let totalUpserted = 0;
-    const upserted: plugins.bson.Document[] = [];
-
-    // Ensure collection exists
-    await storage.createCollection(database, collection);
-
-    const indexEngine = context.getIndexEngine(collection);
-
-    for (let i = 0; i < updates.length; i++) {
-      const updateSpec = updates[i];
-      const filter = updateSpec.q || updateSpec.filter || {};
-      const update = updateSpec.u || updateSpec.update || {};
-      const multi = updateSpec.multi || false;
-      const upsert = updateSpec.upsert || false;
-      const arrayFilters = updateSpec.arrayFilters;
-
-      try {
-        // Try to use index-accelerated query
-        const candidateIds = await indexEngine.findCandidateIds(filter);
-
-        let documents: IStoredDocument[];
-        if (candidateIds !== null) {
-          documents = await storage.findByIds(database, collection, candidateIds);
-        } else {
-          documents = await storage.findAll(database, collection);
-        }
-
-        // Apply filter
-        let matchingDocs = QueryEngine.filter(documents, filter);
-
-        if (matchingDocs.length === 0 && upsert) {
-          // Upsert: create new document
-          const newDoc: plugins.bson.Document = { _id: new plugins.bson.ObjectId() };
-
-          // Apply filter fields to the new document
-          this.applyFilterToDoc(newDoc, filter);
-
-          // Apply update
-          const updatedDoc = UpdateEngine.applyUpdate(newDoc as any, update, arrayFilters);
-
-          // Handle $setOnInsert
-          if (update.$setOnInsert) {
-            Object.assign(updatedDoc, update.$setOnInsert);
-          }
-
-          // Update index for the new document
-          await indexEngine.onInsert(updatedDoc);
-          await storage.insertOne(database, collection, updatedDoc);
-          totalUpserted++;
-          upserted.push({ index: i, _id: updatedDoc._id });
-        } else {
-          // Update existing documents
-          const docsToUpdate = multi ? matchingDocs : matchingDocs.slice(0, 1);
-          totalMatched += docsToUpdate.length;
-
-          for (const doc of docsToUpdate) {
-            const updatedDoc = UpdateEngine.applyUpdate(doc, update, arrayFilters);
-
-            // Check if document actually changed
-            const changed = JSON.stringify(doc) !== JSON.stringify(updatedDoc);
-            if (changed) {
-              // Update index
-              await indexEngine.onUpdate(doc as any, updatedDoc);
-              await storage.updateById(database, collection, doc._id, updatedDoc);
-              totalModified++;
-            }
-          }
-        }
-      } catch (error: any) {
-        writeErrors.push({
-          index: i,
-          code: error.code || 1,
-          errmsg: error.message || 'Update failed',
-        });
-
-        if (ordered) {
-          break;
-        }
-      }
-    }
-
-    const response: plugins.bson.Document = {
-      ok: 1,
-      n: totalMatched + totalUpserted,
-      nModified: totalModified,
-    };
-
-    if (upserted.length > 0) {
-      response.upserted = upserted;
-    }
-
-    if (writeErrors.length > 0) {
-      response.writeErrors = writeErrors;
-    }
-
-    return response;
-  }
-
-  /**
-   * Handle findAndModify command
-   */
-  private async handleFindAndModify(context: IHandlerContext): Promise<plugins.bson.Document> {
-    const { storage, database, command } = context;
-
-    const collection = command.findAndModify;
-    const query = command.query || {};
-    const update = command.update;
-    const remove = command.remove || false;
-    const returnNew = command.new || false;
-    const upsert = command.upsert || false;
-    const sort = command.sort;
-    const fields = command.fields;
-    const arrayFilters = command.arrayFilters;
-
-    // Validate - either update or remove, not both
-    if (update && remove) {
-      return {
-        ok: 0,
-        errmsg: 'cannot specify both update and remove',
-        code: 2,
-        codeName: 'BadValue',
-      };
-    }
-
-    if (!update && !remove) {
-      return {
-        ok: 0,
-        errmsg: 'either update or remove is required',
-        code: 2,
-        codeName: 'BadValue',
-      };
-    }
-
-    // Ensure collection exists
-    await storage.createCollection(database, collection);
-
-    // Try to use index-accelerated query
-    const indexEngine = context.getIndexEngine(collection);
-    const candidateIds = await indexEngine.findCandidateIds(query);
-
-    let documents: IStoredDocument[];
-    if (candidateIds !== null) {
-      documents = await storage.findByIds(database, collection, candidateIds);
-    } else {
-      documents = await storage.findAll(database, collection);
-    }
-
-    let matchingDocs = QueryEngine.filter(documents, query);
-
-    // Apply sort if specified
-    if (sort) {
-      matchingDocs = QueryEngine.sort(matchingDocs, sort);
-    }
-
-    const doc = matchingDocs[0];
-
-    if (remove) {
-      // Delete operation
-      if (!doc) {
-        return { ok: 1, value: null };
-      }
-
-      // Update index for delete
-      await indexEngine.onDelete(doc as any);
-      await storage.deleteById(database, collection, doc._id);
-
-      let result = doc;
-      if (fields) {
-        result = QueryEngine.project([doc], fields)[0] as any;
-      }
-
-      return {
-        ok: 1,
-        value: result,
-        lastErrorObject: {
-          n: 1,
-        },
-      };
-    } else {
-      // Update operation
-      if (!doc && !upsert) {
-        return { ok: 1, value: null };
-      }
-
-      let resultDoc: plugins.bson.Document;
-      let originalDoc: plugins.bson.Document | null = null;
-      let isUpsert = false;
-
-      if (doc) {
-        // Update existing
-        originalDoc = { ...doc };
-        resultDoc = UpdateEngine.applyUpdate(doc, update, arrayFilters);
-        // Update index
-        await indexEngine.onUpdate(doc as any, resultDoc as any);
-        await storage.updateById(database, collection, doc._id, resultDoc as any);
-      } else {
-        // Upsert
-        isUpsert = true;
-        const newDoc: plugins.bson.Document = { _id: new plugins.bson.ObjectId() };
-        this.applyFilterToDoc(newDoc, query);
-        resultDoc = UpdateEngine.applyUpdate(newDoc as any, update, arrayFilters);
-
-        if (update.$setOnInsert) {
-          Object.assign(resultDoc, update.$setOnInsert);
-        }
-
-        // Update index for insert
-        await indexEngine.onInsert(resultDoc as any);
-        await storage.insertOne(database, collection, resultDoc);
-      }
-
-      // Apply projection
-      let returnValue = returnNew ? resultDoc : (originalDoc || null);
-      if (returnValue && fields) {
-        returnValue = QueryEngine.project([returnValue as any], fields)[0];
-      }
-
-      const response: plugins.bson.Document = {
-        ok: 1,
-        value: returnValue,
-        lastErrorObject: {
-          n: 1,
-          updatedExisting: !isUpsert && doc !== undefined,
-        },
-      };
-
-      if (isUpsert) {
-        response.lastErrorObject.upserted = resultDoc._id;
-      }
-
-      return response;
-    }
-  }
-
-  /**
-   * Apply filter equality conditions to a new document (for upsert)
-   */
-  private applyFilterToDoc(doc: plugins.bson.Document, filter: plugins.bson.Document): void {
-    for (const [key, value] of Object.entries(filter)) {
-      // Skip operators
-      if (key.startsWith('$')) continue;
-
-      // Handle nested paths
-      if (typeof value === 'object' && value !== null) {
-        // Check if it's an operator
-        const valueKeys = Object.keys(value);
-        if (valueKeys.some(k => k.startsWith('$'))) {
-          // Extract equality value from $eq if present
-          if ('$eq' in value) {
-            this.setNestedValue(doc, key, value.$eq);
-          }
-          continue;
-        }
-      }
-
-      // Direct value assignment
-      this.setNestedValue(doc, key, value);
-    }
-  }
-
-  /**
-   * Set a nested value using dot notation
-   */
-  private setNestedValue(obj: plugins.bson.Document, path: string, value: any): void {
-    const parts = path.split('.');
-    let current = obj;
-
-    for (let i = 0; i < parts.length - 1; i++) {
-      const part = parts[i];
-      if (!(part in current)) {
-        current[part] = {};
-      }
-      current = current[part];
-    }
-
-    current[parts[parts.length - 1]] = value;
-  }
-}

ts/ts_tsmdb/server/handlers/index.ts

@@ -1,10 +0,0 @@
-// Export all command handlers
-
-export { HelloHandler } from './HelloHandler.js';
-export { InsertHandler } from './InsertHandler.js';
-export { FindHandler } from './FindHandler.js';
-export { UpdateHandler } from './UpdateHandler.js';
-export { DeleteHandler } from './DeleteHandler.js';
-export { AggregateHandler } from './AggregateHandler.js';
-export { IndexHandler } from './IndexHandler.js';
-export { AdminHandler } from './AdminHandler.js';

ts/ts_tsmdb/server/index.ts

@@ -1,10 +0,0 @@
-// Server module exports
-
-export { TsmdbServer } from './TsmdbServer.js';
-export type { ITsmdbServerOptions } from './TsmdbServer.js';
-export { WireProtocol } from './WireProtocol.js';
-export { CommandRouter } from './CommandRouter.js';
-export type { ICommandHandler, IHandlerContext, ICursorState } from './CommandRouter.js';
-
-// Export handlers
-export * from './handlers/index.js';

ts/ts_tsmdb/storage/FileStorageAdapter.ts

@@ -1,562 +0,0 @@
-import * as plugins from '../plugins.js';
-import type { IStorageAdapter } from './IStorageAdapter.js';
-import type { IStoredDocument, IOpLogEntry, Document } from '../types/interfaces.js';
-import { calculateDocumentChecksum, verifyChecksum } from '../utils/checksum.js';
-
-/**
- * File storage adapter options
- */
-export interface IFileStorageAdapterOptions {
-  /** Enable checksum verification for data integrity */
-  enableChecksums?: boolean;
-  /** Throw error on checksum mismatch (default: false, just log warning) */
-  strictChecksums?: boolean;
-}
-
-/**
- * File-based storage adapter for TsmDB
- * Stores data in JSON files on disk for persistence
- */
-export class FileStorageAdapter implements IStorageAdapter {
-  private basePath: string;
-  private opLogCounter = 0;
-  private initialized = false;
-  private fs = new plugins.smartfs.SmartFs(new plugins.smartfs.SmartFsProviderNode());
-  private enableChecksums: boolean;
-  private strictChecksums: boolean;
-
-  constructor(basePath: string, options?: IFileStorageAdapterOptions) {
-    this.basePath = basePath;
-    this.enableChecksums = options?.enableChecksums ?? false;
-    this.strictChecksums = options?.strictChecksums ?? false;
-  }
-
-  // ============================================================================
-  // Helper Methods
-  // ============================================================================
-
-  private getDbPath(dbName: string): string {
-    return plugins.smartpath.join(this.basePath, dbName);
-  }
-
-  private getCollectionPath(dbName: string, collName: string): string {
-    return plugins.smartpath.join(this.basePath, dbName, `${collName}.json`);
-  }
-
-  private getIndexPath(dbName: string, collName: string): string {
-    return plugins.smartpath.join(this.basePath, dbName, `${collName}.indexes.json`);
-  }
-
-  private getOpLogPath(): string {
-    return plugins.smartpath.join(this.basePath, '_oplog.json');
-  }
-
-  private getMetaPath(): string {
-    return plugins.smartpath.join(this.basePath, '_meta.json');
-  }
-
-  private async readJsonFile<T>(filePath: string, defaultValue: T): Promise<T> {
-    try {
-      const exists = await this.fs.file(filePath).exists();
-      if (!exists) return defaultValue;
-      const content = await this.fs.file(filePath).encoding('utf8').read();
-      return JSON.parse(content as string);
-    } catch {
-      return defaultValue;
-    }
-  }
-
-  private async writeJsonFile(filePath: string, data: any): Promise<void> {
-    const dir = filePath.substring(0, filePath.lastIndexOf('/'));
-    await this.fs.directory(dir).recursive().create();
-    await this.fs.file(filePath).encoding('utf8').write(JSON.stringify(data, null, 2));
-  }
-
-  private restoreObjectIds(doc: any): IStoredDocument {
-    if (doc._id) {
-      if (typeof doc._id === 'string') {
-        doc._id = new plugins.bson.ObjectId(doc._id);
-      } else if (typeof doc._id === 'object' && doc._id.$oid) {
-        doc._id = new plugins.bson.ObjectId(doc._id.$oid);
-      }
-    }
-    return doc;
-  }
-
-  /**
-   * Verify document checksum and handle errors
-   */
-  private verifyDocumentChecksum(doc: any): boolean {
-    if (!this.enableChecksums || !doc._checksum) {
-      return true;
-    }
-
-    const isValid = verifyChecksum(doc);
-    if (!isValid) {
-      const errorMsg = `Checksum mismatch for document ${doc._id}`;
-      if (this.strictChecksums) {
-        throw new Error(errorMsg);
-      } else {
-        console.warn(`WARNING: ${errorMsg}`);
-      }
-    }
-    return isValid;
-  }
-
-  /**
-   * Add checksum to document before storing
-   */
-  private prepareDocumentForStorage(doc: any): any {
-    if (!this.enableChecksums) {
-      return doc;
-    }
-    const checksum = calculateDocumentChecksum(doc);
-    return { ...doc, _checksum: checksum };
-  }
-
-  /**
-   * Remove internal checksum field before returning to user
-   */
-  private cleanDocumentForReturn(doc: any): IStoredDocument {
-    const { _checksum, ...cleanDoc } = doc;
-    return this.restoreObjectIds(cleanDoc);
-  }
-
-  // ============================================================================
-  // Initialization
-  // ============================================================================
-
-  async initialize(): Promise<void> {
-    if (this.initialized) return;
-
-    await this.fs.directory(this.basePath).recursive().create();
-
-    // Load metadata
-    const meta = await this.readJsonFile(this.getMetaPath(), { opLogCounter: 0 });
-    this.opLogCounter = meta.opLogCounter || 0;
-
-    this.initialized = true;
-  }
-
-  async close(): Promise<void> {
-    // Save metadata
-    await this.writeJsonFile(this.getMetaPath(), { opLogCounter: this.opLogCounter });
-    this.initialized = false;
-  }
-
-  // ============================================================================
-  // Database Operations
-  // ============================================================================
-
-  async listDatabases(): Promise<string[]> {
-    await this.initialize();
-    try {
-      const entries = await this.fs.directory(this.basePath).list();
-      return entries
-        .filter(entry => entry.isDirectory && !entry.name.startsWith('_'))
-        .map(entry => entry.name);
-    } catch {
-      return [];
-    }
-  }
-
-  async createDatabase(dbName: string): Promise<void> {
-    await this.initialize();
-    const dbPath = this.getDbPath(dbName);
-    await this.fs.directory(dbPath).recursive().create();
-  }
-
-  async dropDatabase(dbName: string): Promise<boolean> {
-    await this.initialize();
-    const dbPath = this.getDbPath(dbName);
-    try {
-      const exists = await this.fs.directory(dbPath).exists();
-      if (exists) {
-        await this.fs.directory(dbPath).recursive().delete();
-        return true;
-      }
-      return false;
-    } catch {
-      return false;
-    }
-  }
-
-  async databaseExists(dbName: string): Promise<boolean> {
-    await this.initialize();
-    const dbPath = this.getDbPath(dbName);
-    return this.fs.directory(dbPath).exists();
-  }
-
-  // ============================================================================
-  // Collection Operations
-  // ============================================================================
-
-  async listCollections(dbName: string): Promise<string[]> {
-    await this.initialize();
-    const dbPath = this.getDbPath(dbName);
-    try {
-      const entries = await this.fs.directory(dbPath).list();
-      return entries
-        .filter(entry => entry.isFile && entry.name.endsWith('.json') && !entry.name.endsWith('.indexes.json'))
-        .map(entry => entry.name.replace('.json', ''));
-    } catch {
-      return [];
-    }
-  }
-
-  async createCollection(dbName: string, collName: string): Promise<void> {
-    await this.createDatabase(dbName);
-    const collPath = this.getCollectionPath(dbName, collName);
-    const exists = await this.fs.file(collPath).exists();
-    if (!exists) {
-      await this.writeJsonFile(collPath, []);
-      // Create default _id index
-      await this.writeJsonFile(this.getIndexPath(dbName, collName), [
-        { name: '_id_', key: { _id: 1 }, unique: true }
-      ]);
-    }
-  }
-
-  async dropCollection(dbName: string, collName: string): Promise<boolean> {
-    await this.initialize();
-    const collPath = this.getCollectionPath(dbName, collName);
-    const indexPath = this.getIndexPath(dbName, collName);
-    try {
-      const exists = await this.fs.file(collPath).exists();
-      if (exists) {
-        await this.fs.file(collPath).delete();
-        try {
-          await this.fs.file(indexPath).delete();
-        } catch {}
-        return true;
-      }
-      return false;
-    } catch {
-      return false;
-    }
-  }
-
-  async collectionExists(dbName: string, collName: string): Promise<boolean> {
-    await this.initialize();
-    const collPath = this.getCollectionPath(dbName, collName);
-    return this.fs.file(collPath).exists();
-  }
-
-  async renameCollection(dbName: string, oldName: string, newName: string): Promise<void> {
-    await this.initialize();
-    const oldPath = this.getCollectionPath(dbName, oldName);
-    const newPath = this.getCollectionPath(dbName, newName);
-    const oldIndexPath = this.getIndexPath(dbName, oldName);
-    const newIndexPath = this.getIndexPath(dbName, newName);
-
-    const exists = await this.fs.file(oldPath).exists();
-    if (!exists) {
-      throw new Error(`Collection ${oldName} not found`);
-    }
-
-    // Read, write to new, delete old
-    const docs = await this.readJsonFile<any[]>(oldPath, []);
-    await this.writeJsonFile(newPath, docs);
-    await this.fs.file(oldPath).delete();
-
-    // Handle indexes
-    const indexes = await this.readJsonFile<any[]>(oldIndexPath, []);
-    await this.writeJsonFile(newIndexPath, indexes);
-    try {
-      await this.fs.file(oldIndexPath).delete();
-    } catch {}
-  }
-
-  // ============================================================================
-  // Document Operations
-  // ============================================================================
-
-  async insertOne(dbName: string, collName: string, doc: Document): Promise<IStoredDocument> {
-    await this.createCollection(dbName, collName);
-    const collPath = this.getCollectionPath(dbName, collName);
-    const docs = await this.readJsonFile<any[]>(collPath, []);
-
-    const storedDoc: IStoredDocument = {
-      ...doc,
-      _id: doc._id ? (doc._id instanceof plugins.bson.ObjectId ? doc._id : new plugins.bson.ObjectId(doc._id)) : new plugins.bson.ObjectId(),
-    };
-
-    // Check for duplicate
-    const idStr = storedDoc._id.toHexString();
-    if (docs.some(d => d._id === idStr || (d._id && d._id.toString() === idStr))) {
-      throw new Error(`Duplicate key error: _id ${idStr}`);
-    }
-
-    // Add checksum if enabled
-    const docToStore = this.prepareDocumentForStorage(storedDoc);
-    docs.push(docToStore);
-    await this.writeJsonFile(collPath, docs);
-    return storedDoc;
-  }
-
-  async insertMany(dbName: string, collName: string, docsToInsert: Document[]): Promise<IStoredDocument[]> {
-    await this.createCollection(dbName, collName);
-    const collPath = this.getCollectionPath(dbName, collName);
-    const docs = await this.readJsonFile<any[]>(collPath, []);
-
-    const results: IStoredDocument[] = [];
-    const existingIds = new Set(docs.map(d => d._id?.toString?.() || d._id));
-
-    for (const doc of docsToInsert) {
-      const storedDoc: IStoredDocument = {
-        ...doc,
-        _id: doc._id ? (doc._id instanceof plugins.bson.ObjectId ? doc._id : new plugins.bson.ObjectId(doc._id)) : new plugins.bson.ObjectId(),
-      };
-
-      const idStr = storedDoc._id.toHexString();
-      if (existingIds.has(idStr)) {
-        throw new Error(`Duplicate key error: _id ${idStr}`);
-      }
-
-      existingIds.add(idStr);
-      // Add checksum if enabled
-      const docToStore = this.prepareDocumentForStorage(storedDoc);
-      docs.push(docToStore);
-      results.push(storedDoc);
-    }
-
-    await this.writeJsonFile(collPath, docs);
-    return results;
-  }
-
-  async findAll(dbName: string, collName: string): Promise<IStoredDocument[]> {
-    await this.createCollection(dbName, collName);
-    const collPath = this.getCollectionPath(dbName, collName);
-    const docs = await this.readJsonFile<any[]>(collPath, []);
-    return docs.map(doc => {
-      // Verify checksum if enabled
-      this.verifyDocumentChecksum(doc);
-      // Clean and return document without internal checksum field
-      return this.cleanDocumentForReturn(doc);
-    });
-  }
-
-  async findByIds(dbName: string, collName: string, ids: Set<string>): Promise<IStoredDocument[]> {
-    await this.createCollection(dbName, collName);
-    const collPath = this.getCollectionPath(dbName, collName);
-    const docs = await this.readJsonFile<any[]>(collPath, []);
-    const results: IStoredDocument[] = [];
-    for (const doc of docs) {
-      // Verify checksum if enabled
-      this.verifyDocumentChecksum(doc);
-      // Clean and restore document
-      const cleaned = this.cleanDocumentForReturn(doc);
-      if (ids.has(cleaned._id.toHexString())) {
-        results.push(cleaned);
-      }
-    }
-    return results;
-  }
-
-  async findById(dbName: string, collName: string, id: plugins.bson.ObjectId): Promise<IStoredDocument | null> {
-    // Use findAll which already handles checksum verification
-    const docs = await this.findAll(dbName, collName);
-    const idStr = id.toHexString();
-    return docs.find(d => d._id.toHexString() === idStr) || null;
-  }
-
-  async updateById(dbName: string, collName: string, id: plugins.bson.ObjectId, doc: IStoredDocument): Promise<boolean> {
-    const collPath = this.getCollectionPath(dbName, collName);
-    const docs = await this.readJsonFile<any[]>(collPath, []);
-    const idStr = id.toHexString();
-
-    const idx = docs.findIndex(d => {
-      const docId = d._id?.toHexString?.() || d._id?.toString?.() || d._id;
-      return docId === idStr;
-    });
-
-    if (idx === -1) return false;
-
-    // Add checksum if enabled
-    const docToStore = this.prepareDocumentForStorage(doc);
-    docs[idx] = docToStore;
-    await this.writeJsonFile(collPath, docs);
-    return true;
-  }
-
-  async deleteById(dbName: string, collName: string, id: plugins.bson.ObjectId): Promise<boolean> {
-    const collPath = this.getCollectionPath(dbName, collName);
-    const docs = await this.readJsonFile<any[]>(collPath, []);
-    const idStr = id.toHexString();
-
-    const idx = docs.findIndex(d => {
-      const docId = d._id?.toHexString?.() || d._id?.toString?.() || d._id;
-      return docId === idStr;
-    });
-
-    if (idx === -1) return false;
-
-    docs.splice(idx, 1);
-    await this.writeJsonFile(collPath, docs);
-    return true;
-  }
-
-  async deleteByIds(dbName: string, collName: string, ids: plugins.bson.ObjectId[]): Promise<number> {
-    const collPath = this.getCollectionPath(dbName, collName);
-    const docs = await this.readJsonFile<any[]>(collPath, []);
-    const idStrs = new Set(ids.map(id => id.toHexString()));
-
-    const originalLength = docs.length;
-    const filtered = docs.filter(d => {
-      const docId = d._id?.toHexString?.() || d._id?.toString?.() || d._id;
-      return !idStrs.has(docId);
-    });
-
-    await this.writeJsonFile(collPath, filtered);
-    return originalLength - filtered.length;
-  }
-
-  async count(dbName: string, collName: string): Promise<number> {
-    const collPath = this.getCollectionPath(dbName, collName);
-    const docs = await this.readJsonFile<any[]>(collPath, []);
-    return docs.length;
-  }
-
-  // ============================================================================
-  // Index Operations
-  // ============================================================================
-
-  async saveIndex(
-    dbName: string,
-    collName: string,
-    indexName: string,
-    indexSpec: { key: Record<string, any>; unique?: boolean; sparse?: boolean; expireAfterSeconds?: number }
-  ): Promise<void> {
-    await this.createCollection(dbName, collName);
-    const indexPath = this.getIndexPath(dbName, collName);
-    const indexes = await this.readJsonFile<any[]>(indexPath, [
-      { name: '_id_', key: { _id: 1 }, unique: true }
-    ]);
-
-    const existingIdx = indexes.findIndex(i => i.name === indexName);
-    if (existingIdx >= 0) {
-      indexes[existingIdx] = { name: indexName, ...indexSpec };
-    } else {
-      indexes.push({ name: indexName, ...indexSpec });
-    }
-
-    await this.writeJsonFile(indexPath, indexes);
-  }
-
-  async getIndexes(dbName: string, collName: string): Promise<Array<{
-    name: string;
-    key: Record<string, any>;
-    unique?: boolean;
-    sparse?: boolean;
-    expireAfterSeconds?: number;
-  }>> {
-    const indexPath = this.getIndexPath(dbName, collName);
-    return this.readJsonFile(indexPath, [{ name: '_id_', key: { _id: 1 }, unique: true }]);
-  }
-
-  async dropIndex(dbName: string, collName: string, indexName: string): Promise<boolean> {
-    if (indexName === '_id_') {
-      throw new Error('Cannot drop _id index');
-    }
-
-    const indexPath = this.getIndexPath(dbName, collName);
-    const indexes = await this.readJsonFile<any[]>(indexPath, []);
-
-    const idx = indexes.findIndex(i => i.name === indexName);
-    if (idx >= 0) {
-      indexes.splice(idx, 1);
-      await this.writeJsonFile(indexPath, indexes);
-      return true;
-    }
-    return false;
-  }
-
-  // ============================================================================
-  // OpLog Operations
-  // ============================================================================
-
-  async appendOpLog(entry: IOpLogEntry): Promise<void> {
-    const opLogPath = this.getOpLogPath();
-    const opLog = await this.readJsonFile<IOpLogEntry[]>(opLogPath, []);
-    opLog.push(entry);
-
-    // Trim oplog if it gets too large
-    if (opLog.length > 10000) {
-      opLog.splice(0, opLog.length - 10000);
-    }
-
-    await this.writeJsonFile(opLogPath, opLog);
-  }
-
-  async getOpLogAfter(ts: plugins.bson.Timestamp, limit: number = 1000): Promise<IOpLogEntry[]> {
-    const opLogPath = this.getOpLogPath();
-    const opLog = await this.readJsonFile<any[]>(opLogPath, []);
-    const tsValue = ts.toNumber();
-
-    const entries = opLog.filter(e => {
-      const entryTs = e.ts.toNumber ? e.ts.toNumber() : (e.ts.t * 4294967296 + e.ts.i);
-      return entryTs > tsValue;
-    });
-
-    return entries.slice(0, limit);
-  }
-
-  async getLatestOpLogTimestamp(): Promise<plugins.bson.Timestamp | null> {
-    const opLogPath = this.getOpLogPath();
-    const opLog = await this.readJsonFile<any[]>(opLogPath, []);
-    if (opLog.length === 0) return null;
-
-    const last = opLog[opLog.length - 1];
-    if (last.ts instanceof plugins.bson.Timestamp) {
-      return last.ts;
-    }
-    return new plugins.bson.Timestamp({ t: last.ts.t, i: last.ts.i });
-  }
-
-  generateTimestamp(): plugins.bson.Timestamp {
-    this.opLogCounter++;
-    return new plugins.bson.Timestamp({ t: Math.floor(Date.now() / 1000), i: this.opLogCounter });
-  }
-
-  // ============================================================================
-  // Transaction Support
-  // ============================================================================
-
-  async createSnapshot(dbName: string, collName: string): Promise<IStoredDocument[]> {
-    const docs = await this.findAll(dbName, collName);
-    return docs.map(doc => JSON.parse(JSON.stringify(doc)));
-  }
-
-  async hasConflicts(
-    dbName: string,
-    collName: string,
-    ids: plugins.bson.ObjectId[],
-    snapshotTime: plugins.bson.Timestamp
-  ): Promise<boolean> {
-    const opLogPath = this.getOpLogPath();
-    const opLog = await this.readJsonFile<any[]>(opLogPath, []);
-    const ns = `${dbName}.${collName}`;
-    const snapshotTs = snapshotTime.toNumber();
-    const modifiedIds = new Set<string>();
-
-    for (const entry of opLog) {
-      const entryTs = entry.ts.toNumber ? entry.ts.toNumber() : (entry.ts.t * 4294967296 + entry.ts.i);
-      if (entryTs > snapshotTs && entry.ns === ns) {
-        if (entry.o._id) {
-          modifiedIds.add(entry.o._id.toString());
-        }
-        if (entry.o2?._id) {
-          modifiedIds.add(entry.o2._id.toString());
-        }
-      }
-    }
-
-    for (const id of ids) {
-      if (modifiedIds.has(id.toString())) {
-        return true;
-      }
-    }
-
-    return false;
-  }
-}

ts/ts_tsmdb/storage/IStorageAdapter.ts

@@ -1,208 +0,0 @@
-import type * as plugins from '../plugins.js';
-import type { IStoredDocument, IOpLogEntry, Document } from '../types/interfaces.js';
-
-/**
- * Storage adapter interface for TsmDB
- * Implementations can provide different storage backends (memory, file, etc.)
- */
-export interface IStorageAdapter {
-  /**
-   * Initialize the storage adapter
-   */
-  initialize(): Promise<void>;
-
-  /**
-   * Close the storage adapter and release resources
-   */
-  close(): Promise<void>;
-
-  // ============================================================================
-  // Database Operations
-  // ============================================================================
-
-  /**
-   * List all database names
-   */
-  listDatabases(): Promise<string[]>;
-
-  /**
-   * Create a database (typically lazy - just marks it as existing)
-   */
-  createDatabase(dbName: string): Promise<void>;
-
-  /**
-   * Drop a database and all its collections
-   */
-  dropDatabase(dbName: string): Promise<boolean>;
-
-  /**
-   * Check if a database exists
-   */
-  databaseExists(dbName: string): Promise<boolean>;
-
-  // ============================================================================
-  // Collection Operations
-  // ============================================================================
-
-  /**
-   * List all collection names in a database
-   */
-  listCollections(dbName: string): Promise<string[]>;
-
-  /**
-   * Create a collection
-   */
-  createCollection(dbName: string, collName: string): Promise<void>;
-
-  /**
-   * Drop a collection
-   */
-  dropCollection(dbName: string, collName: string): Promise<boolean>;
-
-  /**
-   * Check if a collection exists
-   */
-  collectionExists(dbName: string, collName: string): Promise<boolean>;
-
-  /**
-   * Rename a collection
-   */
-  renameCollection(dbName: string, oldName: string, newName: string): Promise<void>;
-
-  // ============================================================================
-  // Document Operations
-  // ============================================================================
-
-  /**
-   * Insert a single document
-   * @returns The inserted document with _id
-   */
-  insertOne(dbName: string, collName: string, doc: Document): Promise<IStoredDocument>;
-
-  /**
-   * Insert multiple documents
-   * @returns Array of inserted documents with _ids
-   */
-  insertMany(dbName: string, collName: string, docs: Document[]): Promise<IStoredDocument[]>;
-
-  /**
-   * Find all documents in a collection
-   */
-  findAll(dbName: string, collName: string): Promise<IStoredDocument[]>;
-
-  /**
-   * Find documents by a set of _id strings (hex format)
-   * Used for index-accelerated queries
-   */
-  findByIds(dbName: string, collName: string, ids: Set<string>): Promise<IStoredDocument[]>;
-
-  /**
-   * Find a document by _id
-   */
-  findById(dbName: string, collName: string, id: plugins.bson.ObjectId): Promise<IStoredDocument | null>;
-
-  /**
-   * Update a document by _id
-   * @returns true if document was updated
-   */
-  updateById(dbName: string, collName: string, id: plugins.bson.ObjectId, doc: IStoredDocument): Promise<boolean>;
-
-  /**
-   * Delete a document by _id
-   * @returns true if document was deleted
-   */
-  deleteById(dbName: string, collName: string, id: plugins.bson.ObjectId): Promise<boolean>;
-
-  /**
-   * Delete multiple documents by _id
-   * @returns Number of deleted documents
-   */
-  deleteByIds(dbName: string, collName: string, ids: plugins.bson.ObjectId[]): Promise<number>;
-
-  /**
-   * Get the count of documents in a collection
-   */
-  count(dbName: string, collName: string): Promise<number>;
-
-  // ============================================================================
-  // Index Operations
-  // ============================================================================
-
-  /**
-   * Store index metadata
-   */
-  saveIndex(
-    dbName: string,
-    collName: string,
-    indexName: string,
-    indexSpec: { key: Record<string, any>; unique?: boolean; sparse?: boolean; expireAfterSeconds?: number }
-  ): Promise<void>;
-
-  /**
-   * Get all index metadata for a collection
-   */
-  getIndexes(dbName: string, collName: string): Promise<Array<{
-    name: string;
-    key: Record<string, any>;
-    unique?: boolean;
-    sparse?: boolean;
-    expireAfterSeconds?: number;
-  }>>;
-
-  /**
-   * Drop an index
-   */
-  dropIndex(dbName: string, collName: string, indexName: string): Promise<boolean>;
-
-  // ============================================================================
-  // OpLog Operations (for change streams)
-  // ============================================================================
-
-  /**
-   * Append an operation to the oplog
-   */
-  appendOpLog(entry: IOpLogEntry): Promise<void>;
-
-  /**
-   * Get oplog entries after a timestamp
-   */
-  getOpLogAfter(ts: plugins.bson.Timestamp, limit?: number): Promise<IOpLogEntry[]>;
-
-  /**
-   * Get the latest oplog timestamp
-   */
-  getLatestOpLogTimestamp(): Promise<plugins.bson.Timestamp | null>;
-
-  // ============================================================================
-  // Transaction Support
-  // ============================================================================
-
-  /**
-   * Create a snapshot of current data for transaction isolation
-   */
-  createSnapshot(dbName: string, collName: string): Promise<IStoredDocument[]>;
-
-  /**
-   * Check if any documents have been modified since the snapshot
-   */
-  hasConflicts(
-    dbName: string,
-    collName: string,
-    ids: plugins.bson.ObjectId[],
-    snapshotTime: plugins.bson.Timestamp
-  ): Promise<boolean>;
-
-  // ============================================================================
-  // Persistence (optional, for MemoryStorageAdapter with file backup)
-  // ============================================================================
-
-  /**
-   * Persist current state to disk (if supported)
-   */
-  persist?(): Promise<void>;
-
-  /**
-   * Load state from disk (if supported)
-   */
-  restore?(): Promise<void>;
-}

ts/ts_tsmdb/storage/MemoryStorageAdapter.ts

@@ -1,455 +0,0 @@
-import * as plugins from '../plugins.js';
-import type { IStorageAdapter } from './IStorageAdapter.js';
-import type { IStoredDocument, IOpLogEntry, Document } from '../types/interfaces.js';
-
-/**
- * In-memory storage adapter for TsmDB
- * Optionally supports persistence to a file
- */
-export class MemoryStorageAdapter implements IStorageAdapter {
-  // Database -> Collection -> Documents
-  private databases: Map<string, Map<string, Map<string, IStoredDocument>>> = new Map();
-
-  // Database -> Collection -> Indexes
-  private indexes: Map<string, Map<string, Array<{
-    name: string;
-    key: Record<string, any>;
-    unique?: boolean;
-    sparse?: boolean;
-    expireAfterSeconds?: number;
-  }>>> = new Map();
-
-  // OpLog entries
-  private opLog: IOpLogEntry[] = [];
-  private opLogCounter = 0;
-
-  // Persistence settings
-  private persistPath?: string;
-  private persistInterval?: ReturnType<typeof setInterval>;
-  private fs = new plugins.smartfs.SmartFs(new plugins.smartfs.SmartFsProviderNode());
-
-  constructor(options?: { persistPath?: string; persistIntervalMs?: number }) {
-    this.persistPath = options?.persistPath;
-    if (this.persistPath && options?.persistIntervalMs) {
-      this.persistInterval = setInterval(() => {
-        this.persist().catch(console.error);
-      }, options.persistIntervalMs);
-    }
-  }
-
-  async initialize(): Promise<void> {
-    if (this.persistPath) {
-      await this.restore();
-    }
-  }
-
-  async close(): Promise<void> {
-    if (this.persistInterval) {
-      clearInterval(this.persistInterval);
-    }
-    if (this.persistPath) {
-      await this.persist();
-    }
-  }
-
-  // ============================================================================
-  // Database Operations
-  // ============================================================================
-
-  async listDatabases(): Promise<string[]> {
-    return Array.from(this.databases.keys());
-  }
-
-  async createDatabase(dbName: string): Promise<void> {
-    if (!this.databases.has(dbName)) {
-      this.databases.set(dbName, new Map());
-      this.indexes.set(dbName, new Map());
-    }
-  }
-
-  async dropDatabase(dbName: string): Promise<boolean> {
-    const existed = this.databases.has(dbName);
-    this.databases.delete(dbName);
-    this.indexes.delete(dbName);
-    return existed;
-  }
-
-  async databaseExists(dbName: string): Promise<boolean> {
-    return this.databases.has(dbName);
-  }
-
-  // ============================================================================
-  // Collection Operations
-  // ============================================================================
-
-  async listCollections(dbName: string): Promise<string[]> {
-    const db = this.databases.get(dbName);
-    return db ? Array.from(db.keys()) : [];
-  }
-
-  async createCollection(dbName: string, collName: string): Promise<void> {
-    await this.createDatabase(dbName);
-    const db = this.databases.get(dbName)!;
-    if (!db.has(collName)) {
-      db.set(collName, new Map());
-      // Initialize default _id index
-      const dbIndexes = this.indexes.get(dbName)!;
-      dbIndexes.set(collName, [{ name: '_id_', key: { _id: 1 }, unique: true }]);
-    }
-  }
-
-  async dropCollection(dbName: string, collName: string): Promise<boolean> {
-    const db = this.databases.get(dbName);
-    if (!db) return false;
-    const existed = db.has(collName);
-    db.delete(collName);
-    const dbIndexes = this.indexes.get(dbName);
-    if (dbIndexes) {
-      dbIndexes.delete(collName);
-    }
-    return existed;
-  }
-
-  async collectionExists(dbName: string, collName: string): Promise<boolean> {
-    const db = this.databases.get(dbName);
-    return db ? db.has(collName) : false;
-  }
-
-  async renameCollection(dbName: string, oldName: string, newName: string): Promise<void> {
-    const db = this.databases.get(dbName);
-    if (!db || !db.has(oldName)) {
-      throw new Error(`Collection ${oldName} not found`);
-    }
-    const collection = db.get(oldName)!;
-    db.set(newName, collection);
-    db.delete(oldName);
-
-    // Also rename indexes
-    const dbIndexes = this.indexes.get(dbName);
-    if (dbIndexes && dbIndexes.has(oldName)) {
-      const collIndexes = dbIndexes.get(oldName)!;
-      dbIndexes.set(newName, collIndexes);
-      dbIndexes.delete(oldName);
-    }
-  }
-
-  // ============================================================================
-  // Document Operations
-  // ============================================================================
-
-  private getCollection(dbName: string, collName: string): Map<string, IStoredDocument> {
-    const db = this.databases.get(dbName);
-    if (!db) {
-      throw new Error(`Database ${dbName} not found`);
-    }
-    const collection = db.get(collName);
-    if (!collection) {
-      throw new Error(`Collection ${collName} not found`);
-    }
-    return collection;
-  }
-
-  private ensureCollection(dbName: string, collName: string): Map<string, IStoredDocument> {
-    if (!this.databases.has(dbName)) {
-      this.databases.set(dbName, new Map());
-      this.indexes.set(dbName, new Map());
-    }
-    const db = this.databases.get(dbName)!;
-    if (!db.has(collName)) {
-      db.set(collName, new Map());
-      const dbIndexes = this.indexes.get(dbName)!;
-      dbIndexes.set(collName, [{ name: '_id_', key: { _id: 1 }, unique: true }]);
-    }
-    return db.get(collName)!;
-  }
-
-  async insertOne(dbName: string, collName: string, doc: Document): Promise<IStoredDocument> {
-    const collection = this.ensureCollection(dbName, collName);
-    const storedDoc: IStoredDocument = {
-      ...doc,
-      _id: doc._id instanceof plugins.bson.ObjectId ? doc._id : new plugins.bson.ObjectId(doc._id),
-    };
-
-    if (!storedDoc._id) {
-      storedDoc._id = new plugins.bson.ObjectId();
-    }
-
-    const idStr = storedDoc._id.toHexString();
-    if (collection.has(idStr)) {
-      throw new Error(`Duplicate key error: _id ${idStr}`);
-    }
-
-    collection.set(idStr, storedDoc);
-    return storedDoc;
-  }
-
-  async insertMany(dbName: string, collName: string, docs: Document[]): Promise<IStoredDocument[]> {
-    const results: IStoredDocument[] = [];
-    for (const doc of docs) {
-      results.push(await this.insertOne(dbName, collName, doc));
-    }
-    return results;
-  }
-
-  async findAll(dbName: string, collName: string): Promise<IStoredDocument[]> {
-    const collection = this.ensureCollection(dbName, collName);
-    return Array.from(collection.values());
-  }
-
-  async findByIds(dbName: string, collName: string, ids: Set<string>): Promise<IStoredDocument[]> {
-    const collection = this.ensureCollection(dbName, collName);
-    const results: IStoredDocument[] = [];
-    for (const id of ids) {
-      const doc = collection.get(id);
-      if (doc) {
-        results.push(doc);
-      }
-    }
-    return results;
-  }
-
-  async findById(dbName: string, collName: string, id: plugins.bson.ObjectId): Promise<IStoredDocument | null> {
-    const collection = this.ensureCollection(dbName, collName);
-    return collection.get(id.toHexString()) || null;
-  }
-
-  async updateById(dbName: string, collName: string, id: plugins.bson.ObjectId, doc: IStoredDocument): Promise<boolean> {
-    const collection = this.ensureCollection(dbName, collName);
-    const idStr = id.toHexString();
-    if (!collection.has(idStr)) {
-      return false;
-    }
-    collection.set(idStr, doc);
-    return true;
-  }
-
-  async deleteById(dbName: string, collName: string, id: plugins.bson.ObjectId): Promise<boolean> {
-    const collection = this.ensureCollection(dbName, collName);
-    return collection.delete(id.toHexString());
-  }
-
-  async deleteByIds(dbName: string, collName: string, ids: plugins.bson.ObjectId[]): Promise<number> {
-    let count = 0;
-    for (const id of ids) {
-      if (await this.deleteById(dbName, collName, id)) {
-        count++;
-      }
-    }
-    return count;
-  }
-
-  async count(dbName: string, collName: string): Promise<number> {
-    const collection = this.ensureCollection(dbName, collName);
-    return collection.size;
-  }
-
-  // ============================================================================
-  // Index Operations
-  // ============================================================================
-
-  async saveIndex(
-    dbName: string,
-    collName: string,
-    indexName: string,
-    indexSpec: { key: Record<string, any>; unique?: boolean; sparse?: boolean; expireAfterSeconds?: number }
-  ): Promise<void> {
-    await this.createCollection(dbName, collName);
-    const dbIndexes = this.indexes.get(dbName)!;
-    let collIndexes = dbIndexes.get(collName);
-    if (!collIndexes) {
-      collIndexes = [{ name: '_id_', key: { _id: 1 }, unique: true }];
-      dbIndexes.set(collName, collIndexes);
-    }
-
-    // Check if index already exists
-    const existingIndex = collIndexes.findIndex(i => i.name === indexName);
-    if (existingIndex >= 0) {
-      collIndexes[existingIndex] = { name: indexName, ...indexSpec };
-    } else {
-      collIndexes.push({ name: indexName, ...indexSpec });
-    }
-  }
-
-  async getIndexes(dbName: string, collName: string): Promise<Array<{
-    name: string;
-    key: Record<string, any>;
-    unique?: boolean;
-    sparse?: boolean;
-    expireAfterSeconds?: number;
-  }>> {
-    const dbIndexes = this.indexes.get(dbName);
-    if (!dbIndexes) return [{ name: '_id_', key: { _id: 1 }, unique: true }];
-    const collIndexes = dbIndexes.get(collName);
-    return collIndexes || [{ name: '_id_', key: { _id: 1 }, unique: true }];
-  }
-
-  async dropIndex(dbName: string, collName: string, indexName: string): Promise<boolean> {
-    if (indexName === '_id_') {
-      throw new Error('Cannot drop _id index');
-    }
-    const dbIndexes = this.indexes.get(dbName);
-    if (!dbIndexes) return false;
-    const collIndexes = dbIndexes.get(collName);
-    if (!collIndexes) return false;
-
-    const idx = collIndexes.findIndex(i => i.name === indexName);
-    if (idx >= 0) {
-      collIndexes.splice(idx, 1);
-      return true;
-    }
-    return false;
-  }
-
-  // ============================================================================
-  // OpLog Operations
-  // ============================================================================
-
-  async appendOpLog(entry: IOpLogEntry): Promise<void> {
-    this.opLog.push(entry);
-    // Trim oplog if it gets too large (keep last 10000 entries)
-    if (this.opLog.length > 10000) {
-      this.opLog = this.opLog.slice(-10000);
-    }
-  }
-
-  async getOpLogAfter(ts: plugins.bson.Timestamp, limit: number = 1000): Promise<IOpLogEntry[]> {
-    const tsValue = ts.toNumber();
-    const entries = this.opLog.filter(e => e.ts.toNumber() > tsValue);
-    return entries.slice(0, limit);
-  }
-
-  async getLatestOpLogTimestamp(): Promise<plugins.bson.Timestamp | null> {
-    if (this.opLog.length === 0) return null;
-    return this.opLog[this.opLog.length - 1].ts;
-  }
-
-  /**
-   * Generate a new timestamp for oplog entries
-   */
-  generateTimestamp(): plugins.bson.Timestamp {
-    this.opLogCounter++;
-    return new plugins.bson.Timestamp({ t: Math.floor(Date.now() / 1000), i: this.opLogCounter });
-  }
-
-  // ============================================================================
-  // Transaction Support
-  // ============================================================================
-
-  async createSnapshot(dbName: string, collName: string): Promise<IStoredDocument[]> {
-    const docs = await this.findAll(dbName, collName);
-    // Deep clone the documents for snapshot isolation
-    return docs.map(doc => JSON.parse(JSON.stringify(doc)));
-  }
-
-  async hasConflicts(
-    dbName: string,
-    collName: string,
-    ids: plugins.bson.ObjectId[],
-    snapshotTime: plugins.bson.Timestamp
-  ): Promise<boolean> {
-    // Check if any of the given document IDs have been modified after snapshotTime
-    const ns = `${dbName}.${collName}`;
-    const modifiedIds = new Set<string>();
-
-    for (const entry of this.opLog) {
-      if (entry.ts.greaterThan(snapshotTime) && entry.ns === ns) {
-        if (entry.o._id) {
-          modifiedIds.add(entry.o._id.toString());
-        }
-        if (entry.o2?._id) {
-          modifiedIds.add(entry.o2._id.toString());
-        }
-      }
-    }
-
-    for (const id of ids) {
-      if (modifiedIds.has(id.toString())) {
-        return true;
-      }
-    }
-
-    return false;
-  }
-
-  // ============================================================================
-  // Persistence
-  // ============================================================================
-
-  async persist(): Promise<void> {
-    if (!this.persistPath) return;
-
-    const data = {
-      databases: {} as Record<string, Record<string, IStoredDocument[]>>,
-      indexes: {} as Record<string, Record<string, any[]>>,
-      opLogCounter: this.opLogCounter,
-    };
-
-    for (const [dbName, collections] of this.databases) {
-      data.databases[dbName] = {};
-      for (const [collName, docs] of collections) {
-        data.databases[dbName][collName] = Array.from(docs.values());
-      }
-    }
-
-    for (const [dbName, collIndexes] of this.indexes) {
-      data.indexes[dbName] = {};
-      for (const [collName, indexes] of collIndexes) {
-        data.indexes[dbName][collName] = indexes;
-      }
-    }
-
-    // Ensure parent directory exists
-    const dir = this.persistPath.substring(0, this.persistPath.lastIndexOf('/'));
-    if (dir) {
-      await this.fs.directory(dir).recursive().create();
-    }
-    await this.fs.file(this.persistPath).encoding('utf8').write(JSON.stringify(data, null, 2));
-  }
-
-  async restore(): Promise<void> {
-    if (!this.persistPath) return;
-
-    try {
-      const exists = await this.fs.file(this.persistPath).exists();
-      if (!exists) return;
-
-      const content = await this.fs.file(this.persistPath).encoding('utf8').read();
-      const data = JSON.parse(content as string);
-
-      this.databases.clear();
-      this.indexes.clear();
-
-      for (const [dbName, collections] of Object.entries(data.databases || {})) {
-        const dbMap = new Map<string, Map<string, IStoredDocument>>();
-        this.databases.set(dbName, dbMap);
-
-        for (const [collName, docs] of Object.entries(collections as Record<string, any[]>)) {
-          const collMap = new Map<string, IStoredDocument>();
-          for (const doc of docs) {
-            // Restore ObjectId
-            if (doc._id && typeof doc._id === 'string') {
-              doc._id = new plugins.bson.ObjectId(doc._id);
-            } else if (doc._id && typeof doc._id === 'object' && doc._id.$oid) {
-              doc._id = new plugins.bson.ObjectId(doc._id.$oid);
-            }
-            collMap.set(doc._id.toHexString(), doc);
-          }
-          dbMap.set(collName, collMap);
-        }
-      }
-
-      for (const [dbName, collIndexes] of Object.entries(data.indexes || {})) {
-        const indexMap = new Map<string, any[]>();
-        this.indexes.set(dbName, indexMap);
-        for (const [collName, indexes] of Object.entries(collIndexes as Record<string, any[]>)) {
-          indexMap.set(collName, indexes);
-        }
-      }
-
-      this.opLogCounter = data.opLogCounter || 0;
-    } catch (error) {
-      // If restore fails, start fresh
-      console.warn('Failed to restore from persistence:', error);
-    }
-  }
-}

ts/ts_tsmdb/storage/OpLog.ts

@@ -1,282 +0,0 @@
-import * as plugins from '../plugins.js';
-import type { IStorageAdapter } from './IStorageAdapter.js';
-import type { IOpLogEntry, Document, IResumeToken, ChangeStreamOperationType } from '../types/interfaces.js';
-
-/**
- * Operation Log for tracking all mutations
- * Used primarily for change stream support
- */
-export class OpLog {
-  private storage: IStorageAdapter;
-  private counter = 0;
-  private listeners: Array<(entry: IOpLogEntry) => void> = [];
-
-  constructor(storage: IStorageAdapter) {
-    this.storage = storage;
-  }
-
-  /**
-   * Generate a new timestamp for oplog entries
-   */
-  generateTimestamp(): plugins.bson.Timestamp {
-    this.counter++;
-    return new plugins.bson.Timestamp({ t: Math.floor(Date.now() / 1000), i: this.counter });
-  }
-
-  /**
-   * Generate a resume token from a timestamp
-   */
-  generateResumeToken(ts: plugins.bson.Timestamp): IResumeToken {
-    // Create a resume token similar to MongoDB's format
-    // It's a base64-encoded BSON document containing the timestamp
-    const tokenData = {
-      _data: Buffer.from(JSON.stringify({
-        ts: { t: ts.high, i: ts.low },
-        version: 1,
-      })).toString('base64'),
-    };
-    return tokenData;
-  }
-
-  /**
-   * Parse a resume token to get the timestamp
-   */
-  parseResumeToken(token: IResumeToken): plugins.bson.Timestamp {
-    try {
-      const data = JSON.parse(Buffer.from(token._data, 'base64').toString('utf-8'));
-      return new plugins.bson.Timestamp({ t: data.ts.t, i: data.ts.i });
-    } catch {
-      throw new Error('Invalid resume token');
-    }
-  }
-
-  /**
-   * Record an insert operation
-   */
-  async recordInsert(
-    dbName: string,
-    collName: string,
-    document: Document,
-    txnInfo?: { txnNumber?: number; lsid?: { id: plugins.bson.Binary } }
-  ): Promise<IOpLogEntry> {
-    const entry: IOpLogEntry = {
-      ts: this.generateTimestamp(),
-      op: 'i',
-      ns: `${dbName}.${collName}`,
-      o: document,
-      ...txnInfo,
-    };
-
-    await this.storage.appendOpLog(entry);
-    this.notifyListeners(entry);
-    return entry;
-  }
-
-  /**
-   * Record an update operation
-   */
-  async recordUpdate(
-    dbName: string,
-    collName: string,
-    filter: Document,
-    update: Document,
-    txnInfo?: { txnNumber?: number; lsid?: { id: plugins.bson.Binary } }
-  ): Promise<IOpLogEntry> {
-    const entry: IOpLogEntry = {
-      ts: this.generateTimestamp(),
-      op: 'u',
-      ns: `${dbName}.${collName}`,
-      o: update,
-      o2: filter,
-      ...txnInfo,
-    };
-
-    await this.storage.appendOpLog(entry);
-    this.notifyListeners(entry);
-    return entry;
-  }
-
-  /**
-   * Record a delete operation
-   */
-  async recordDelete(
-    dbName: string,
-    collName: string,
-    filter: Document,
-    txnInfo?: { txnNumber?: number; lsid?: { id: plugins.bson.Binary } }
-  ): Promise<IOpLogEntry> {
-    const entry: IOpLogEntry = {
-      ts: this.generateTimestamp(),
-      op: 'd',
-      ns: `${dbName}.${collName}`,
-      o: filter,
-      ...txnInfo,
-    };
-
-    await this.storage.appendOpLog(entry);
-    this.notifyListeners(entry);
-    return entry;
-  }
-
-  /**
-   * Record a command (drop, rename, etc.)
-   */
-  async recordCommand(
-    dbName: string,
-    command: Document
-  ): Promise<IOpLogEntry> {
-    const entry: IOpLogEntry = {
-      ts: this.generateTimestamp(),
-      op: 'c',
-      ns: `${dbName}.$cmd`,
-      o: command,
-    };
-
-    await this.storage.appendOpLog(entry);
-    this.notifyListeners(entry);
-    return entry;
-  }
-
-  /**
-   * Get oplog entries after a timestamp
-   */
-  async getEntriesAfter(ts: plugins.bson.Timestamp, limit?: number): Promise<IOpLogEntry[]> {
-    return this.storage.getOpLogAfter(ts, limit);
-  }
-
-  /**
-   * Get the latest timestamp
-   */
-  async getLatestTimestamp(): Promise<plugins.bson.Timestamp | null> {
-    return this.storage.getLatestOpLogTimestamp();
-  }
-
-  /**
-   * Subscribe to oplog changes (for change streams)
-   */
-  subscribe(listener: (entry: IOpLogEntry) => void): () => void {
-    this.listeners.push(listener);
-    return () => {
-      const idx = this.listeners.indexOf(listener);
-      if (idx >= 0) {
-        this.listeners.splice(idx, 1);
-      }
-    };
-  }
-
-  /**
-   * Notify all listeners of a new entry
-   */
-  private notifyListeners(entry: IOpLogEntry): void {
-    for (const listener of this.listeners) {
-      try {
-        listener(entry);
-      } catch (error) {
-        console.error('Error in oplog listener:', error);
-      }
-    }
-  }
-
-  /**
-   * Convert an oplog entry to a change stream document
-   */
-  opLogEntryToChangeEvent(
-    entry: IOpLogEntry,
-    fullDocument?: Document,
-    fullDocumentBeforeChange?: Document
-  ): {
-    _id: IResumeToken;
-    operationType: ChangeStreamOperationType;
-    fullDocument?: Document;
-    fullDocumentBeforeChange?: Document;
-    ns: { db: string; coll?: string };
-    documentKey?: { _id: plugins.bson.ObjectId };
-    updateDescription?: {
-      updatedFields?: Document;
-      removedFields?: string[];
-    };
-    clusterTime: plugins.bson.Timestamp;
-  } {
-    const [db, coll] = entry.ns.split('.');
-    const resumeToken = this.generateResumeToken(entry.ts);
-
-    const baseEvent = {
-      _id: resumeToken,
-      ns: { db, coll: coll === '$cmd' ? undefined : coll },
-      clusterTime: entry.ts,
-    };
-
-    switch (entry.op) {
-      case 'i':
-        return {
-          ...baseEvent,
-          operationType: 'insert' as ChangeStreamOperationType,
-          fullDocument: fullDocument || entry.o,
-          documentKey: entry.o._id ? { _id: entry.o._id } : undefined,
-        };
-
-      case 'u':
-        const updateEvent: any = {
-          ...baseEvent,
-          operationType: 'update' as ChangeStreamOperationType,
-          documentKey: entry.o2?._id ? { _id: entry.o2._id } : undefined,
-        };
-
-        if (fullDocument) {
-          updateEvent.fullDocument = fullDocument;
-        }
-        if (fullDocumentBeforeChange) {
-          updateEvent.fullDocumentBeforeChange = fullDocumentBeforeChange;
-        }
-
-        // Parse update description
-        if (entry.o.$set || entry.o.$unset) {
-          updateEvent.updateDescription = {
-            updatedFields: entry.o.$set || {},
-            removedFields: entry.o.$unset ? Object.keys(entry.o.$unset) : [],
-          };
-        }
-
-        return updateEvent;
-
-      case 'd':
-        return {
-          ...baseEvent,
-          operationType: 'delete' as ChangeStreamOperationType,
-          documentKey: entry.o._id ? { _id: entry.o._id } : undefined,
-          fullDocumentBeforeChange,
-        };
-
-      case 'c':
-        if (entry.o.drop) {
-          return {
-            ...baseEvent,
-            operationType: 'drop' as ChangeStreamOperationType,
-            ns: { db, coll: entry.o.drop },
-          };
-        }
-        if (entry.o.dropDatabase) {
-          return {
-            ...baseEvent,
-            operationType: 'dropDatabase' as ChangeStreamOperationType,
-          };
-        }
-        if (entry.o.renameCollection) {
-          return {
-            ...baseEvent,
-            operationType: 'rename' as ChangeStreamOperationType,
-          };
-        }
-        return {
-          ...baseEvent,
-          operationType: 'invalidate' as ChangeStreamOperationType,
-        };
-
-      default:
-        return {
-          ...baseEvent,
-          operationType: 'invalidate' as ChangeStreamOperationType,
-        };
-    }
-  }
-}

ts/ts_tsmdb/storage/WAL.ts

@@ -1,375 +0,0 @@
-import * as plugins from '../plugins.js';
-import type { Document, IStoredDocument } from '../types/interfaces.js';
-
-/**
- * WAL entry operation types
- */
-export type TWalOperation = 'insert' | 'update' | 'delete' | 'checkpoint' | 'begin' | 'commit' | 'abort';
-
-/**
- * WAL entry structure
- */
-export interface IWalEntry {
-  /** Log Sequence Number - monotonically increasing */
-  lsn: number;
-  /** Timestamp of the operation */
-  timestamp: number;
-  /** Operation type */
-  operation: TWalOperation;
-  /** Database name */
-  dbName: string;
-  /** Collection name */
-  collName: string;
-  /** Document ID (hex string) */
-  documentId: string;
-  /** Document data (BSON serialized, base64 encoded) */
-  data?: string;
-  /** Previous document data for updates (for rollback) */
-  previousData?: string;
-  /** Transaction ID if part of a transaction */
-  txnId?: string;
-  /** CRC32 checksum of the entry (excluding this field) */
-  checksum: number;
-}
-
-/**
- * Checkpoint record
- */
-interface ICheckpointRecord {
-  lsn: number;
-  timestamp: number;
-  lastCommittedLsn: number;
-}
-
-/**
- * Write-Ahead Log (WAL) for durability and crash recovery
- *
- * The WAL ensures durability by writing operations to a log file before
- * they are applied to the main storage. On crash recovery, uncommitted
- * operations can be replayed to restore the database to a consistent state.
- */
-export class WAL {
-  private walPath: string;
-  private currentLsn: number = 0;
-  private lastCheckpointLsn: number = 0;
-  private entries: IWalEntry[] = [];
-  private isInitialized: boolean = false;
-  private fs = new plugins.smartfs.SmartFs(new plugins.smartfs.SmartFsProviderNode());
-
-  // In-memory uncommitted entries per transaction
-  private uncommittedTxns: Map<string, IWalEntry[]> = new Map();
-
-  // Checkpoint interval (number of entries between checkpoints)
-  private checkpointInterval: number = 1000;
-
-  constructor(walPath: string, options?: { checkpointInterval?: number }) {
-    this.walPath = walPath;
-    if (options?.checkpointInterval) {
-      this.checkpointInterval = options.checkpointInterval;
-    }
-  }
-
-  /**
-   * Initialize the WAL, loading existing entries and recovering if needed
-   */
-  async initialize(): Promise<{ recoveredEntries: IWalEntry[] }> {
-    if (this.isInitialized) {
-      return { recoveredEntries: [] };
-    }
-
-    // Ensure WAL directory exists
-    const walDir = this.walPath.substring(0, this.walPath.lastIndexOf('/'));
-    if (walDir) {
-      await this.fs.directory(walDir).recursive().create();
-    }
-
-    // Try to load existing WAL
-    const exists = await this.fs.file(this.walPath).exists();
-    if (exists) {
-      const content = await this.fs.file(this.walPath).encoding('utf8').read();
-      const lines = (content as string).split('\n').filter(line => line.trim());
-
-      for (const line of lines) {
-        try {
-          const entry = JSON.parse(line) as IWalEntry;
-          // Verify checksum
-          if (this.verifyChecksum(entry)) {
-            this.entries.push(entry);
-            if (entry.lsn > this.currentLsn) {
-              this.currentLsn = entry.lsn;
-            }
-            if (entry.operation === 'checkpoint') {
-              this.lastCheckpointLsn = entry.lsn;
-            }
-          }
-        } catch {
-          // Skip corrupted entries
-          console.warn('Skipping corrupted WAL entry');
-        }
-      }
-    }
-
-    this.isInitialized = true;
-
-    // Return entries after last checkpoint that need recovery
-    const recoveredEntries = this.entries.filter(
-      e => e.lsn > this.lastCheckpointLsn &&
-           (e.operation === 'insert' || e.operation === 'update' || e.operation === 'delete')
-    );
-
-    return { recoveredEntries };
-  }
-
-  /**
-   * Log an insert operation
-   */
-  async logInsert(dbName: string, collName: string, doc: IStoredDocument, txnId?: string): Promise<number> {
-    return this.appendEntry({
-      operation: 'insert',
-      dbName,
-      collName,
-      documentId: doc._id.toHexString(),
-      data: this.serializeDocument(doc),
-      txnId,
-    });
-  }
-
-  /**
-   * Log an update operation
-   */
-  async logUpdate(
-    dbName: string,
-    collName: string,
-    oldDoc: IStoredDocument,
-    newDoc: IStoredDocument,
-    txnId?: string
-  ): Promise<number> {
-    return this.appendEntry({
-      operation: 'update',
-      dbName,
-      collName,
-      documentId: oldDoc._id.toHexString(),
-      data: this.serializeDocument(newDoc),
-      previousData: this.serializeDocument(oldDoc),
-      txnId,
-    });
-  }
-
-  /**
-   * Log a delete operation
-   */
-  async logDelete(dbName: string, collName: string, doc: IStoredDocument, txnId?: string): Promise<number> {
-    return this.appendEntry({
-      operation: 'delete',
-      dbName,
-      collName,
-      documentId: doc._id.toHexString(),
-      previousData: this.serializeDocument(doc),
-      txnId,
-    });
-  }
-
-  /**
-   * Log transaction begin
-   */
-  async logBeginTransaction(txnId: string): Promise<number> {
-    this.uncommittedTxns.set(txnId, []);
-    return this.appendEntry({
-      operation: 'begin',
-      dbName: '',
-      collName: '',
-      documentId: '',
-      txnId,
-    });
-  }
-
-  /**
-   * Log transaction commit
-   */
-  async logCommitTransaction(txnId: string): Promise<number> {
-    this.uncommittedTxns.delete(txnId);
-    return this.appendEntry({
-      operation: 'commit',
-      dbName: '',
-      collName: '',
-      documentId: '',
-      txnId,
-    });
-  }
-
-  /**
-   * Log transaction abort
-   */
-  async logAbortTransaction(txnId: string): Promise<number> {
-    this.uncommittedTxns.delete(txnId);
-    return this.appendEntry({
-      operation: 'abort',
-      dbName: '',
-      collName: '',
-      documentId: '',
-      txnId,
-    });
-  }
-
-  /**
-   * Get entries to roll back for an aborted transaction
-   */
-  getTransactionEntries(txnId: string): IWalEntry[] {
-    return this.entries.filter(e => e.txnId === txnId);
-  }
-
-  /**
-   * Create a checkpoint - marks a consistent point in the log
-   */
-  async checkpoint(): Promise<number> {
-    const lsn = await this.appendEntry({
-      operation: 'checkpoint',
-      dbName: '',
-      collName: '',
-      documentId: '',
-    });
-    this.lastCheckpointLsn = lsn;
-
-    // Truncate old entries (keep only entries after checkpoint)
-    await this.truncate();
-
-    return lsn;
-  }
-
-  /**
-   * Truncate the WAL file, removing entries before the last checkpoint
-   */
-  private async truncate(): Promise<void> {
-    // Keep entries after last checkpoint
-    const newEntries = this.entries.filter(e => e.lsn >= this.lastCheckpointLsn);
-    this.entries = newEntries;
-
-    // Rewrite the WAL file
-    const lines = this.entries.map(e => JSON.stringify(e)).join('\n');
-    await this.fs.file(this.walPath).encoding('utf8').write(lines);
-  }
-
-  /**
-   * Get current LSN
-   */
-  getCurrentLsn(): number {
-    return this.currentLsn;
-  }
-
-  /**
-   * Get entries after a specific LSN (for recovery)
-   */
-  getEntriesAfter(lsn: number): IWalEntry[] {
-    return this.entries.filter(e => e.lsn > lsn);
-  }
-
-  /**
-   * Close the WAL
-   */
-  async close(): Promise<void> {
-    if (this.isInitialized) {
-      // Final checkpoint before close
-      await this.checkpoint();
-    }
-    this.isInitialized = false;
-  }
-
-  // ============================================================================
-  // Private Methods
-  // ============================================================================
-
-  private async appendEntry(
-    partial: Omit<IWalEntry, 'lsn' | 'timestamp' | 'checksum'>
-  ): Promise<number> {
-    await this.initialize();
-
-    this.currentLsn++;
-    const entry: IWalEntry = {
-      ...partial,
-      lsn: this.currentLsn,
-      timestamp: Date.now(),
-      checksum: 0, // Will be calculated
-    };
-
-    // Calculate checksum
-    entry.checksum = this.calculateChecksum(entry);
-
-    // Track in transaction if applicable
-    if (partial.txnId && this.uncommittedTxns.has(partial.txnId)) {
-      this.uncommittedTxns.get(partial.txnId)!.push(entry);
-    }
-
-    // Add to in-memory log
-    this.entries.push(entry);
-
-    // Append to file (append mode for durability)
-    await this.fs.file(this.walPath).encoding('utf8').append(JSON.stringify(entry) + '\n');
-
-    // Check if we need a checkpoint
-    if (this.entries.length - this.lastCheckpointLsn >= this.checkpointInterval) {
-      await this.checkpoint();
-    }
-
-    return entry.lsn;
-  }
-
-  private serializeDocument(doc: Document): string {
-    // Serialize document to BSON and encode as base64
-    const bsonData = plugins.bson.serialize(doc);
-    return Buffer.from(bsonData).toString('base64');
-  }
-
-  private deserializeDocument(data: string): Document {
-    // Decode base64 and deserialize from BSON
-    const buffer = Buffer.from(data, 'base64');
-    return plugins.bson.deserialize(buffer);
-  }
-
-  private calculateChecksum(entry: IWalEntry): number {
-    // Simple CRC32-like checksum
-    const str = JSON.stringify({
-      lsn: entry.lsn,
-      timestamp: entry.timestamp,
-      operation: entry.operation,
-      dbName: entry.dbName,
-      collName: entry.collName,
-      documentId: entry.documentId,
-      data: entry.data,
-      previousData: entry.previousData,
-      txnId: entry.txnId,
-    });
-
-    let crc = 0xFFFFFFFF;
-    for (let i = 0; i < str.length; i++) {
-      crc ^= str.charCodeAt(i);
-      for (let j = 0; j < 8; j++) {
-        crc = (crc >>> 1) ^ (crc & 1 ? 0xEDB88320 : 0);
-      }
-    }
-    return (~crc) >>> 0;
-  }
-
-  private verifyChecksum(entry: IWalEntry): boolean {
-    const savedChecksum = entry.checksum;
-    entry.checksum = 0;
-    const calculatedChecksum = this.calculateChecksum(entry);
-    entry.checksum = savedChecksum;
-    return calculatedChecksum === savedChecksum;
-  }
-
-  /**
-   * Recover document from WAL entry
-   */
-  recoverDocument(entry: IWalEntry): IStoredDocument | null {
-    if (!entry.data) return null;
-    return this.deserializeDocument(entry.data) as IStoredDocument;
-  }
-
-  /**
-   * Recover previous document state from WAL entry (for rollback)
-   */
-  recoverPreviousDocument(entry: IWalEntry): IStoredDocument | null {
-    if (!entry.previousData) return null;
-    return this.deserializeDocument(entry.previousData) as IStoredDocument;
-  }
-}

ts/ts_tsmdb/types/interfaces.ts

@@ -1,433 +0,0 @@
-import type * as plugins from '../plugins.js';
-
-// ============================================================================
-// Document Types
-// ============================================================================
-
-export type Document = Record<string, any>;
-
-export interface WithId<TSchema> {
-  _id: plugins.bson.ObjectId;
-}
-
-// ============================================================================
-// Client Options
-// ============================================================================
-
-export interface ITsmdbClientOptions {
-  /** Storage adapter type: 'memory' or 'file' */
-  storageType?: 'memory' | 'file';
-  /** Path for file-based storage */
-  storagePath?: string;
-  /** Enable persistence for memory adapter */
-  persist?: boolean;
-  /** Path for persistence file when using memory adapter */
-  persistPath?: string;
-}
-
-// ============================================================================
-// Connection String Parsing
-// ============================================================================
-
-export interface IParsedConnectionString {
-  protocol: 'tsmdb';
-  storageType: 'memory' | 'file';
-  options: {
-    persist?: string;
-    path?: string;
-  };
-}
-
-// ============================================================================
-// CRUD Operation Options
-// ============================================================================
-
-export interface IInsertOneOptions {
-  /** Session for transaction support */
-  session?: IClientSession;
-  /** Custom write concern */
-  writeConcern?: IWriteConcern;
-}
-
-export interface IInsertManyOptions extends IInsertOneOptions {
-  /** If true, inserts are ordered and stop on first error */
-  ordered?: boolean;
-}
-
-export interface IFindOptions<TSchema = Document> {
-  /** Projection to apply */
-  projection?: Partial<Record<keyof TSchema | string, 0 | 1 | boolean>>;
-  /** Sort specification */
-  sort?: ISortSpecification;
-  /** Number of documents to skip */
-  skip?: number;
-  /** Maximum number of documents to return */
-  limit?: number;
-  /** Session for transaction support */
-  session?: IClientSession;
-  /** Hint for index usage */
-  hint?: string | Document;
-}
-
-export interface IUpdateOptions {
-  /** Create document if it doesn't exist */
-  upsert?: boolean;
-  /** Session for transaction support */
-  session?: IClientSession;
-  /** Array filters for positional updates */
-  arrayFilters?: Document[];
-  /** Custom write concern */
-  writeConcern?: IWriteConcern;
-  /** Hint for index usage */
-  hint?: string | Document;
-}
-
-export interface IReplaceOptions extends IUpdateOptions {}
-
-export interface IDeleteOptions {
-  /** Session for transaction support */
-  session?: IClientSession;
-  /** Custom write concern */
-  writeConcern?: IWriteConcern;
-  /** Hint for index usage */
-  hint?: string | Document;
-}
-
-export interface IFindOneAndUpdateOptions extends IUpdateOptions {
-  /** Return the document before or after the update */
-  returnDocument?: 'before' | 'after';
-  /** Projection to apply */
-  projection?: Document;
-  /** Sort specification to determine which document to modify */
-  sort?: ISortSpecification;
-}
-
-export interface IFindOneAndReplaceOptions extends IFindOneAndUpdateOptions {}
-
-export interface IFindOneAndDeleteOptions {
-  /** Projection to apply */
-  projection?: Document;
-  /** Sort specification to determine which document to delete */
-  sort?: ISortSpecification;
-  /** Session for transaction support */
-  session?: IClientSession;
-}
-
-// ============================================================================
-// CRUD Results
-// ============================================================================
-
-export interface IInsertOneResult {
-  acknowledged: boolean;
-  insertedId: plugins.bson.ObjectId;
-}
-
-export interface IInsertManyResult {
-  acknowledged: boolean;
-  insertedCount: number;
-  insertedIds: Record<number, plugins.bson.ObjectId>;
-}
-
-export interface IUpdateResult {
-  acknowledged: boolean;
-  matchedCount: number;
-  modifiedCount: number;
-  upsertedCount: number;
-  upsertedId: plugins.bson.ObjectId | null;
-}
-
-export interface IDeleteResult {
-  acknowledged: boolean;
-  deletedCount: number;
-}
-
-export interface IModifyResult<TSchema> {
-  value: TSchema | null;
-  ok: 1 | 0;
-  lastErrorObject?: {
-    n: number;
-    updatedExisting?: boolean;
-    upserted?: plugins.bson.ObjectId;
-  };
-}
-
-// ============================================================================
-// Sort and Index Types
-// ============================================================================
-
-export type ISortDirection = 1 | -1 | 'asc' | 'desc' | 'ascending' | 'descending';
-
-export type ISortSpecification = Record<string, ISortDirection> | [string, ISortDirection][];
-
-export interface IIndexSpecification {
-  key: Record<string, 1 | -1 | 'text' | '2dsphere'>;
-  name?: string;
-  unique?: boolean;
-  sparse?: boolean;
-  expireAfterSeconds?: number;
-  background?: boolean;
-  partialFilterExpression?: Document;
-}
-
-export interface IIndexInfo {
-  v: number;
-  key: Record<string, 1 | -1 | string>;
-  name: string;
-  unique?: boolean;
-  sparse?: boolean;
-  expireAfterSeconds?: number;
-}
-
-export interface ICreateIndexOptions {
-  unique?: boolean;
-  sparse?: boolean;
-  expireAfterSeconds?: number;
-  name?: string;
-  background?: boolean;
-  partialFilterExpression?: Document;
-}
-
-// ============================================================================
-// Write Concern
-// ============================================================================
-
-export interface IWriteConcern {
-  w?: number | 'majority';
-  j?: boolean;
-  wtimeout?: number;
-}
-
-// ============================================================================
-// Aggregation Types
-// ============================================================================
-
-export interface IAggregateOptions {
-  /** Allow disk use for large aggregations */
-  allowDiskUse?: boolean;
-  /** Maximum time in ms */
-  maxTimeMS?: number;
-  /** Session for transaction support */
-  session?: IClientSession;
-  /** Batch size for cursor */
-  batchSize?: number;
-  /** Collation settings */
-  collation?: ICollation;
-  /** Hint for index usage */
-  hint?: string | Document;
-  /** Comment for profiling */
-  comment?: string;
-}
-
-export interface ICollation {
-  locale: string;
-  caseLevel?: boolean;
-  caseFirst?: string;
-  strength?: number;
-  numericOrdering?: boolean;
-  alternate?: string;
-  maxVariable?: string;
-  backwards?: boolean;
-}
-
-// ============================================================================
-// Change Stream Types
-// ============================================================================
-
-export interface IChangeStreamOptions {
-  /** Resume after this token */
-  resumeAfter?: IResumeToken;
-  /** Start at this operation time */
-  startAtOperationTime?: plugins.bson.Timestamp;
-  /** Start after this token */
-  startAfter?: IResumeToken;
-  /** Full document lookup mode */
-  fullDocument?: 'default' | 'updateLookup' | 'whenAvailable' | 'required';
-  /** Full document before change */
-  fullDocumentBeforeChange?: 'off' | 'whenAvailable' | 'required';
-  /** Batch size */
-  batchSize?: number;
-  /** Maximum await time in ms */
-  maxAwaitTimeMS?: number;
-}
-
-export interface IResumeToken {
-  _data: string;
-}
-
-export type ChangeStreamOperationType =
-  | 'insert'
-  | 'update'
-  | 'replace'
-  | 'delete'
-  | 'drop'
-  | 'rename'
-  | 'dropDatabase'
-  | 'invalidate';
-
-export interface IChangeStreamDocument<TSchema = Document> {
-  _id: IResumeToken;
-  operationType: ChangeStreamOperationType;
-  fullDocument?: TSchema;
-  fullDocumentBeforeChange?: TSchema;
-  ns: {
-    db: string;
-    coll?: string;
-  };
-  documentKey?: { _id: plugins.bson.ObjectId };
-  updateDescription?: {
-    updatedFields?: Document;
-    removedFields?: string[];
-    truncatedArrays?: Array<{ field: string; newSize: number }>;
-  };
-  clusterTime?: plugins.bson.Timestamp;
-  txnNumber?: number;
-  lsid?: { id: plugins.bson.Binary; uid: plugins.bson.Binary };
-}
-
-// ============================================================================
-// Transaction Types
-// ============================================================================
-
-export interface IClientSession {
-  id: { id: plugins.bson.Binary };
-  inTransaction(): boolean;
-  startTransaction(options?: ITransactionOptions): void;
-  commitTransaction(): Promise<void>;
-  abortTransaction(): Promise<void>;
-  withTransaction<T>(fn: () => Promise<T>, options?: ITransactionOptions): Promise<T>;
-  endSession(): Promise<void>;
-}
-
-export interface ITransactionOptions {
-  readConcern?: IReadConcern;
-  writeConcern?: IWriteConcern;
-  readPreference?: string;
-  maxCommitTimeMS?: number;
-}
-
-export interface IReadConcern {
-  level: 'local' | 'available' | 'majority' | 'linearizable' | 'snapshot';
-}
-
-// ============================================================================
-// Bulk Operation Types
-// ============================================================================
-
-export interface IBulkWriteOptions {
-  ordered?: boolean;
-  session?: IClientSession;
-  writeConcern?: IWriteConcern;
-}
-
-export interface IBulkWriteOperation<TSchema = Document> {
-  insertOne?: { document: TSchema };
-  updateOne?: { filter: Document; update: Document; upsert?: boolean; arrayFilters?: Document[]; hint?: Document | string };
-  updateMany?: { filter: Document; update: Document; upsert?: boolean; arrayFilters?: Document[]; hint?: Document | string };
-  replaceOne?: { filter: Document; replacement: TSchema; upsert?: boolean; hint?: Document | string };
-  deleteOne?: { filter: Document; hint?: Document | string };
-  deleteMany?: { filter: Document; hint?: Document | string };
-}
-
-export interface IBulkWriteResult {
-  acknowledged: boolean;
-  insertedCount: number;
-  matchedCount: number;
-  modifiedCount: number;
-  deletedCount: number;
-  upsertedCount: number;
-  insertedIds: Record<number, plugins.bson.ObjectId>;
-  upsertedIds: Record<number, plugins.bson.ObjectId>;
-}
-
-// ============================================================================
-// Storage Types
-// ============================================================================
-
-export interface IStoredDocument extends Document {
-  _id: plugins.bson.ObjectId;
-}
-
-export interface IOpLogEntry {
-  ts: plugins.bson.Timestamp;
-  op: 'i' | 'u' | 'd' | 'c' | 'n';
-  ns: string;
-  o: Document;
-  o2?: Document;
-  txnNumber?: number;
-  lsid?: { id: plugins.bson.Binary };
-}
-
-// ============================================================================
-// Admin Types
-// ============================================================================
-
-export interface IDatabaseInfo {
-  name: string;
-  sizeOnDisk: number;
-  empty: boolean;
-}
-
-export interface ICollectionInfo {
-  name: string;
-  type: 'collection' | 'view';
-  options: Document;
-  info: {
-    readOnly: boolean;
-    uuid?: plugins.bson.Binary;
-  };
-  idIndex?: IIndexInfo;
-}
-
-export interface IServerStatus {
-  host: string;
-  version: string;
-  process: string;
-  pid: number;
-  uptime: number;
-  uptimeMillis: number;
-  uptimeEstimate: number;
-  localTime: Date;
-  mem: {
-    resident: number;
-    virtual: number;
-  };
-  connections: {
-    current: number;
-    available: number;
-    totalCreated: number;
-  };
-  ok: 1;
-}
-
-export interface ICollectionStats {
-  ns: string;
-  count: number;
-  size: number;
-  avgObjSize: number;
-  storageSize: number;
-  totalIndexSize: number;
-  indexSizes: Record<string, number>;
-  nindexes: number;
-  ok: 1;
-}
-
-// ============================================================================
-// Count Types
-// ============================================================================
-
-export interface ICountDocumentsOptions {
-  skip?: number;
-  limit?: number;
-  session?: IClientSession;
-  hint?: string | Document;
-  maxTimeMS?: number;
-}
-
-export interface IEstimatedDocumentCountOptions {
-  maxTimeMS?: number;
-}
-
-export interface IDistinctOptions {
-  session?: IClientSession;
-  maxTimeMS?: number;
-}

ts/ts_tsmdb/utils/checksum.ts

@@ -1,88 +0,0 @@
-/**
- * CRC32 checksum utilities for data integrity
- */
-
-// CRC32 lookup table
-const CRC32_TABLE: number[] = [];
-
-// Initialize the CRC32 table
-function initCRC32Table(): void {
-  if (CRC32_TABLE.length > 0) return;
-
-  for (let i = 0; i < 256; i++) {
-    let crc = i;
-    for (let j = 0; j < 8; j++) {
-      crc = (crc & 1) ? (0xEDB88320 ^ (crc >>> 1)) : (crc >>> 1);
-    }
-    CRC32_TABLE[i] = crc >>> 0;
-  }
-}
-
-/**
- * Calculate CRC32 checksum for a string
- */
-export function calculateCRC32(data: string): number {
-  initCRC32Table();
-
-  let crc = 0xFFFFFFFF;
-  for (let i = 0; i < data.length; i++) {
-    const byte = data.charCodeAt(i) & 0xFF;
-    crc = CRC32_TABLE[(crc ^ byte) & 0xFF] ^ (crc >>> 8);
-  }
-  return (~crc) >>> 0;
-}
-
-/**
- * Calculate CRC32 checksum for a Buffer
- */
-export function calculateCRC32Buffer(data: Buffer): number {
-  initCRC32Table();
-
-  let crc = 0xFFFFFFFF;
-  for (let i = 0; i < data.length; i++) {
-    crc = CRC32_TABLE[(crc ^ data[i]) & 0xFF] ^ (crc >>> 8);
-  }
-  return (~crc) >>> 0;
-}
-
-/**
- * Calculate checksum for a document (serialized as JSON)
- */
-export function calculateDocumentChecksum(doc: Record<string, any>): number {
-  // Exclude _checksum field from calculation
-  const { _checksum, ...docWithoutChecksum } = doc;
-  const json = JSON.stringify(docWithoutChecksum);
-  return calculateCRC32(json);
-}
-
-/**
- * Add checksum to a document
- */
-export function addChecksum<T extends Record<string, any>>(doc: T): T & { _checksum: number } {
-  const checksum = calculateDocumentChecksum(doc);
-  return { ...doc, _checksum: checksum };
-}
-
-/**
- * Verify checksum of a document
- * Returns true if checksum is valid or if document has no checksum
- */
-export function verifyChecksum(doc: Record<string, any>): boolean {
-  if (!('_checksum' in doc)) {
-    // No checksum to verify
-    return true;
-  }
-
-  const storedChecksum = doc._checksum;
-  const calculatedChecksum = calculateDocumentChecksum(doc);
-
-  return storedChecksum === calculatedChecksum;
-}
-
-/**
- * Remove checksum from a document
- */
-export function removeChecksum<T extends Record<string, any>>(doc: T): Omit<T, '_checksum'> {
-  const { _checksum, ...docWithoutChecksum } = doc;
-  return docWithoutChecksum as Omit<T, '_checksum'>;
-}

ts/ts_tsmdb/utils/index.ts

@@ -1 +0,0 @@
-export * from './checksum.js';