feat(core): introduced lucene style search

ts/classes.db.ts

@@ -0,0 +1,84 @@
+import * as plugins from './plugins.js';
+
+import { SmartdataCollection } from './classes.collection.js';
+import { EasyStore } from './classes.easystore.js';
+
+import { logger } from './logging.js';
+
+/**
+ * interface - indicates the connection status of the db
+ */
+export type TConnectionStatus = 'initial' | 'disconnected' | 'connected' | 'failed';
+
+export class SmartdataDb {
+  smartdataOptions: plugins.tsclass.database.IMongoDescriptor;
+  mongoDbClient: plugins.mongodb.MongoClient;
+  mongoDb: plugins.mongodb.Db;
+  status: TConnectionStatus;
+  statusConnectedDeferred = plugins.smartpromise.defer();
+  smartdataCollectionMap = new plugins.lik.ObjectMap<SmartdataCollection<any>>();
+
+  constructor(smartdataOptions: plugins.tsclass.database.IMongoDescriptor) {
+    this.smartdataOptions = smartdataOptions;
+    this.status = 'initial';
+  }
+
+  // easystore
+  public async createEasyStore(nameIdArg: string) {
+    const easyStore = new EasyStore(nameIdArg, this);
+    return easyStore;
+  }
+
+  // basic connection stuff ----------------------------------------------
+
+  /**
+   * connects to the database that was specified during instance creation
+   */
+  public async init(): Promise<any> {
+    const finalConnectionUrl = this.smartdataOptions.mongoDbUrl
+      .replace('<USERNAME>', this.smartdataOptions.mongoDbUser)
+      .replace('<username>', this.smartdataOptions.mongoDbUser)
+      .replace('<USER>', this.smartdataOptions.mongoDbUser)
+      .replace('<user>', this.smartdataOptions.mongoDbUser)
+      .replace('<PASSWORD>', this.smartdataOptions.mongoDbPass)
+      .replace('<password>', this.smartdataOptions.mongoDbPass)
+      .replace('<DBNAME>', this.smartdataOptions.mongoDbName)
+      .replace('<dbname>', this.smartdataOptions.mongoDbName);
+
+    this.mongoDbClient = await plugins.mongodb.MongoClient.connect(finalConnectionUrl, {
+      maxPoolSize: 100,
+      maxIdleTimeMS: 10,
+    });
+    this.mongoDb = this.mongoDbClient.db(this.smartdataOptions.mongoDbName);
+    this.status = 'connected';
+    this.statusConnectedDeferred.resolve();
+    console.log(`Connected to database ${this.smartdataOptions.mongoDbName}`);
+  }
+
+  /**
+   * closes the connection to the databse
+   */
+  public async close(): Promise<any> {
+    await this.mongoDbClient.close();
+    this.status = 'disconnected';
+    logger.log('info', `disconnected from database ${this.smartdataOptions.mongoDbName}`);
+  }
+
+  // handle table to class distribution
+
+  public addCollection(SmartdataCollectionArg: SmartdataCollection<any>) {
+    this.smartdataCollectionMap.add(SmartdataCollectionArg);
+  }
+
+  /**
+   * Gets a collection's name and returns a SmartdataCollection instance
+   * @param nameArg
+   * @returns DbTable
+   */
+  public async getSmartdataCollectionByName<T>(nameArg: string): Promise<SmartdataCollection<T>> {
+    const resultCollection = await this.smartdataCollectionMap.find(async (dbTableArg) => {
+      return dbTableArg.collectionName === nameArg;
+    });
+    return resultCollection;
+  }
+}