ng-indexed-db
Version:
An IndexedDB Angular module wrapped in RXJS
217 lines • 15.3 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { Observable } from 'rxjs';
import { TransactionModes } from './enums/transaction-modes';
/**
* IndexedDB client
*/
export class IndexedDatabase {
/**
* @param {?} database
* @param {?} upgraded
* @param {?=} stores
*/
constructor(database, upgraded, stores = []) {
this.database = database;
this.upgraded = upgraded;
this.createTables(stores);
}
/**
* If table has been upgrades, generates the recived stores
* @param {?} tables Tables metadata
* @return {?}
*/
createTables(tables) {
if (this.upgraded) {
tables.forEach((/**
* @param {?} item
* @return {?}
*/
item => this.createTable(item)));
}
}
/**
* Generates one single sotre
* @param {?} store
* @return {?}
*/
createTable(store) {
/** @type {?} */
const keyPath = 'id';
this.database.createObjectStore(store.name, { keyPath });
}
/**
* Request a list with all store elements
* @template M
* @param {?} storeName Store name
* @return {?}
*/
list(storeName) {
return new Observable((/**
* @param {?} observer
* @return {?}
*/
observer => {
/** @type {?} */
const store = this.store(storeName, TransactionModes.READONLY);
/** @type {?} */
const request = store.getAll();
request.onsuccess = (/**
* @param {?} event
* @return {?}
*/
event => observer.next(request.result));
request.onerror = (/**
* @param {?} event
* @return {?}
*/
event => observer.error(request.error));
}));
}
/**
* Request a single object found by the given key
* @template M
* @param {?} storeName Store name
* @param {?} key Predicate key
* @return {?}
*/
get(storeName, key) {
return new Observable((/**
* @param {?} observer
* @return {?}
*/
observer => {
/** @type {?} */
const store = this.store(storeName, TransactionModes.READONLY);
/** @type {?} */
const request = store.get(key);
request.onsuccess = (/**
* @param {?} event
* @return {?}
*/
event => observer.next(request.result));
request.onerror = (/**
* @param {?} event
* @return {?}
*/
event => observer.error(request.error));
}));
}
/**
* Request to store an element
* @template M
* @param {?} storeName Store name
* @param {?} data data to store
* @return {?}
*/
create(storeName, data) {
return new Observable((/**
* @param {?} observer
* @return {?}
*/
observer => {
/** @type {?} */
const store = this.store(storeName, TransactionModes.READWRITE);
/** @type {?} */
const request = store.put(data);
request.onsuccess = (/**
* @param {?} event
* @return {?}
*/
event => observer.next(data));
request.onerror = (/**
* @param {?} event
* @return {?}
*/
event => observer.error(request.error));
}));
}
/**
* Request to update an element
* @template M
* @param {?} storeName Store name
* @param {?} data data to store
* @return {?}
*/
update(storeName, data) {
return new Observable((/**
* @param {?} observer
* @return {?}
*/
observer => {
/** @type {?} */
const store = this.store(storeName, TransactionModes.READWRITE);
/** @type {?} */
const request = store.put(data);
request.onsuccess = (/**
* @param {?} event
* @return {?}
*/
event => observer.next(data));
request.onerror = (/**
* @param {?} event
* @return {?}
*/
event => observer.error(request.error));
}));
}
/**
* Request to delete an element with the given key
* @param {?} storeName Store name
* @param {?} key Element key to delete
* @return {?}
*/
delete(storeName, key) {
return new Observable((/**
* @param {?} observer
* @return {?}
*/
observer => {
/** @type {?} */
const store = this.store(storeName, TransactionModes.READWRITE);
/** @type {?} */
const request = store.delete(key);
request.onsuccess = (/**
* @param {?} event
* @return {?}
*/
event => observer.next(true));
request.onerror = (/**
* @param {?} event
* @return {?}
*/
event => observer.error(request.error));
}));
}
/**
* Find the a store table by the given name
* @private
* @param {?} storeName Store name to find
* @param {?} mode Transaction mode
* @return {?}
*/
store(storeName, mode) {
/** @type {?} */
const transaction = this.database.transaction(storeName, mode);
/** @type {?} */
const store = transaction.objectStore(storeName);
return store;
}
}
if (false) {
/**
* IndexedBD instance
* @type {?}
* @private
*/
IndexedDatabase.prototype.database;
/**
* Indicates if databases has been upgraded
* @type {?}
* @private
*/
IndexedDatabase.prototype.upgraded;
}
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{ Observable } from 'rxjs';\n\nimport { TransactionModes } from './enums/transaction-modes';\nimport { NgStore } from './types/store.type';\n/**\n * IndexedDB client\n */\nexport class IndexedDatabase {\n\n  /** IndexedBD instance */\n  private database: IDBDatabase;\n\n  /** Indicates if databases has been upgraded */\n  private upgraded: boolean;\n\n  constructor(\n    database: IDBDatabase,\n    upgraded: boolean,\n    stores: NgStore[] = []\n  ) {\n    this.database = database;\n    this.upgraded = upgraded;\n    this.createTables(stores);\n  }\n  /**\n   * If table has been upgrades, generates the recived stores\n   * @param tables Tables metadata\n   */\n  createTables(tables: NgStore[]) {\n    if (this.upgraded) {\n      tables.forEach(item => this.createTable(item));\n    }\n  }\n  /**\n   * Generates one single sotre\n   * @param storeName Store name\n   */\n  createTable(store: NgStore) {\n    const keyPath = 'id';\n    this.database.createObjectStore(store.name, { keyPath });\n  }\n  /**\n   * Request a list with all store elements\n   * @param storeName Store name\n   */\n  list<M = any>(storeName: string): Observable<M[]> {\n    return new Observable<M[]>(observer => {\n      const store = this.store(storeName, TransactionModes.READONLY);\n      const request = store.getAll();\n      request.onsuccess = event => observer.next(request.result);\n      request.onerror = event => observer.error(request.error);\n    });\n  }\n  /**\n   * Request a single object found by the given key\n   * @param storeName Store name\n   * @param key Predicate key\n   */\n  get<M = any>(storeName: string, key: any): Observable<M> {\n    return new Observable<M>(observer => {\n      const store = this.store(storeName, TransactionModes.READONLY);\n      const request = store.get(key);\n      request.onsuccess = event => observer.next(request.result);\n      request.onerror = event => observer.error(request.error);\n    });\n  }\n  /**\n   * Request to store an element\n   * @param storeName Store name\n   * @param data data to store\n   */\n  create<M = any>(storeName: string, data: M): Observable<M> {\n    return new Observable<M>(observer => {\n      const store = this.store(storeName, TransactionModes.READWRITE);\n      const request = store.put(data);\n      request.onsuccess = event => observer.next(data);\n      request.onerror = event => observer.error(request.error);\n    });\n  }\n  /**\n   * Request to update an element\n   * @param storeName Store name\n   * @param data data to store\n   */\n  update<M = any>(storeName: string, data: M): Observable<M> {\n    return new Observable<M>(observer => {\n      const store = this.store(storeName, TransactionModes.READWRITE);\n      const request = store.put(data);\n      request.onsuccess = event => observer.next(data);\n      request.onerror = event => observer.error(request.error);\n    });\n  }\n  /**\n   * Request to delete an element with the given key\n   * @param storeName Store name\n   * @param key Element key to delete\n   */\n  delete(storeName: string, key: IDBValidKey): Observable<boolean> {\n    return new Observable<boolean>(observer => {\n      const store = this.store(storeName, TransactionModes.READWRITE);\n      const request = store.delete(key);\n      request.onsuccess = event => observer.next(true);\n      request.onerror = event => observer.error(request.error);\n    });\n  }\n  /**\n   * Find the a store table by the given name\n   * @param storeName Store name to find\n   * @param mode Transaction mode\n   */\n  private store(storeName: string, mode: TransactionModes): IDBObjectStore {\n    const transaction: IDBTransaction = this.database.transaction(storeName, mode);\n    const store: IDBObjectStore = transaction.objectStore(storeName);\n    return store;\n  }\n}\n"]}