101 lines
2.3 KiB
TypeScript
101 lines
2.3 KiB
TypeScript
import * as plugins from './smartdata.plugins'
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import { Objectmap } from 'lik'
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import { Db } from './smartdata.classes.db'
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import { DbTable } from './smartdata.classes.dbcollection'
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export type TDocCreation = 'db' | 'new' | 'mixed'
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/**
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* saveable - saveable decorator to be used on class properties
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*/
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export function svDb() {
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return (target: DbDoc<any>, key: string) => {
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console.log('called sva')
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if (!target.saveableProperties) { target.saveableProperties = [] }
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target.saveableProperties.push(key)
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}
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}
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export class DbDoc<T> {
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/**
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* the collection object an Doc belongs to
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*/
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collection: DbTable<T>
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/**
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* how the Doc in memory was created, may prove useful later.
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*/
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creationStatus: TDocCreation = 'new'
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/**
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* an array of saveable properties of a doc
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*/
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saveableProperties: string[]
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/**
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* name
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*/
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name: string
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/**
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* primary id in the database
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*/
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dbId: string
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/**
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* class constructor
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*/
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constructor () {
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this.name = this.constructor['name']
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this.collection = this.constructor[ 'dbCollection' ]
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}
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/**
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* saves this instance but not any connected items
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* may lead to data inconsistencies, but is faster
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*/
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async save () {
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let self: any = this
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switch (this.creationStatus) {
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case 'db':
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await this.collection.update(self)
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break
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case 'new':
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let writeResult = await this.collection.insert(self)
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this.creationStatus = 'db'
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break;
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default:
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console.error('neither new nor in db?')
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}
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}
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/**
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* also store any referenced objects to DB
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* better for data consistency
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*/
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saveDeep (savedMapArg: Objectmap<DbDoc<any>> = null) {
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if (!savedMapArg) {
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savedMapArg = new Objectmap<DbDoc<any>>()
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}
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savedMapArg.add(this)
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this.save()
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for (let propertyKey in this) {
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let property: any = this[ propertyKey ]
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if (property instanceof DbDoc && !savedMapArg.checkForObject(property)) {
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property.saveDeep(savedMapArg)
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}
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}
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}
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createSavableObject () {
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let saveableObject: any = {} // is not exposed to outside, so any is ok here
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for (let propertyNameString of this.saveableProperties) {
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saveableObject[ propertyNameString ] = this[ propertyNameString ]
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}
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return saveableObject
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}
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}
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