| // Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. |
| // Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation |
| // files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, |
| // modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the |
| // Software is furnished to do so, subject to the following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE |
| // WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR |
| // COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| |
| // store-indexeddb.js |
| |
| (function (window, undefined) { |
| |
| var datajs = window.datajs || {}; |
| |
| // Imports. |
| var throwErrorCallback = datajs.throwErrorCallback; |
| var delay = datajs.delay; |
| |
| // CONTENT START |
| |
| var indexedDB = window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB || window.indexedDB; |
| var IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange; |
| var IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || {}; |
| |
| var IDBT_READ_ONLY = IDBTransaction.READ_ONLY || "readonly"; |
| var IDBT_READ_WRITE = IDBTransaction.READ_WRITE || "readwrite"; |
| |
| var getError = function (error, defaultError) { |
| /// <summary>Returns either a specific error handler or the default error handler</summary> |
| /// <param name="error" type="Function">The specific error handler</param> |
| /// <param name="defaultError" type="Function">The default error handler</param> |
| /// <returns type="Function">The error callback</returns> |
| |
| return function (e) { |
| var errorFunc = error || defaultError; |
| if (!errorFunc) { |
| return; |
| } |
| |
| // Old api quota exceeded error support. |
| if (Object.prototype.toString.call(e) === "[object IDBDatabaseException]") { |
| if (e.code === 11 /* IndexedDb disk quota exceeded */) { |
| errorFunc({ name: "QuotaExceededError", error: e }); |
| return; |
| } |
| errorFunc(e); |
| return; |
| } |
| |
| var errName; |
| try { |
| var errObj = e.target.error || e; |
| errName = errObj.name; |
| } catch (ex) { |
| errName = (e.type === "blocked") ? "IndexedDBBlocked" : "UnknownError"; |
| } |
| errorFunc({ name: errName, error: e }); |
| }; |
| }; |
| |
| var openStoreDb = function (store, success, error) { |
| /// <summary>Opens the store object's indexed db database.</summary> |
| /// <param name="store" type="IndexedDBStore">The store object</param> |
| /// <param name="success" type="Function">The success callback</param> |
| /// <param name="error" type="Function">The error callback</param> |
| |
| var storeName = store.name; |
| var dbName = "_datajs_" + storeName; |
| |
| var request = indexedDB.open(dbName); |
| request.onblocked = error; |
| request.onerror = error; |
| |
| request.onupgradeneeded = function () { |
| var db = request.result; |
| if (!db.objectStoreNames.contains(storeName)) { |
| db.createObjectStore(storeName); |
| } |
| }; |
| |
| request.onsuccess = function (event) { |
| var db = request.result; |
| if (!db.objectStoreNames.contains(storeName)) { |
| // Should we use the old style api to define the database schema? |
| if ("setVersion" in db) { |
| var versionRequest = db.setVersion("1.0"); |
| versionRequest.onsuccess = function () { |
| var transaction = versionRequest.transaction; |
| transaction.oncomplete = function () { |
| success(db); |
| }; |
| db.createObjectStore(storeName, null, false); |
| }; |
| versionRequest.onerror = error; |
| versionRequest.onblocked = error; |
| return; |
| } |
| |
| // The database doesn't have the expected store. |
| // Fabricate an error object for the event for the schema mismatch |
| // and error out. |
| event.target.error = { name: "DBSchemaMismatch" }; |
| error(event); |
| return; |
| } |
| |
| db.onversionchange = function(event) { |
| event.target.close(); |
| }; |
| success(db); |
| }; |
| }; |
| |
| var openTransaction = function (store, mode, success, error) { |
| /// <summary>Opens a new transaction to the store</summary> |
| /// <param name="store" type="IndexedDBStore">The store object</param> |
| /// <param name="mode" type="Short">The read/write mode of the transaction (constants from IDBTransaction)</param> |
| /// <param name="success" type="Function">The success callback</param> |
| /// <param name="error" type="Function">The error callback</param> |
| |
| var storeName = store.name; |
| var storeDb = store.db; |
| var errorCallback = getError(error, store.defaultError); |
| |
| if (storeDb) { |
| success(storeDb.transaction(storeName, mode)); |
| return; |
| } |
| |
| openStoreDb(store, function (db) { |
| store.db = db; |
| success(db.transaction(storeName, mode)); |
| }, errorCallback); |
| }; |
| |
| var IndexedDBStore = function (name) { |
| /// <summary>Creates a new IndexedDBStore.</summary> |
| /// <param name="name" type="String">The name of the store.</param> |
| /// <returns type="Object">The new IndexedDBStore.</returns> |
| this.name = name; |
| }; |
| |
| IndexedDBStore.create = function (name) { |
| /// <summary>Creates a new IndexedDBStore.</summary> |
| /// <param name="name" type="String">The name of the store.</param> |
| /// <returns type="Object">The new IndexedDBStore.</returns> |
| if (IndexedDBStore.isSupported()) { |
| return new IndexedDBStore(name); |
| } |
| |
| throw { message: "IndexedDB is not supported on this browser" }; |
| }; |
| |
| IndexedDBStore.isSupported = function () { |
| /// <summary>Returns whether IndexedDB is supported.</summary> |
| /// <returns type="Boolean">True if IndexedDB is supported, false otherwise.</returns> |
| return !!indexedDB; |
| }; |
| |
| IndexedDBStore.prototype.add = function (key, value, success, error) { |
| /// <summary>Adds a key/value pair to the store</summary> |
| /// <param name="key" type="String">The key</param> |
| /// <param name="value" type="Object">The value</param> |
| /// <param name="success" type="Function">The success callback</param> |
| /// <param name="error" type="Function">The error callback</param> |
| var name = this.name; |
| var defaultError = this.defaultError; |
| var keys = []; |
| var values = []; |
| |
| if (key instanceof Array) { |
| keys = key; |
| values = value; |
| } else { |
| keys = [key]; |
| values = [value]; |
| } |
| |
| openTransaction(this, IDBT_READ_WRITE, function (transaction) { |
| transaction.onabort = getError(error, defaultError, key, "add"); |
| transaction.oncomplete = function () { |
| if (key instanceof Array) { |
| success(keys, values); |
| } else { |
| success(key, value); |
| } |
| }; |
| |
| for (var i = 0; i < keys.length && i < values.length; i++) { |
| transaction.objectStore(name).add({ v: values[i] }, keys[i]); |
| } |
| }, error); |
| }; |
| |
| IndexedDBStore.prototype.addOrUpdate = function (key, value, success, error) { |
| /// <summary>Adds or updates a key/value pair in the store</summary> |
| /// <param name="key" type="String">The key</param> |
| /// <param name="value" type="Object">The value</param> |
| /// <param name="success" type="Function">The success callback</param> |
| /// <param name="error" type="Function">The error callback</param> |
| var name = this.name; |
| var defaultError = this.defaultError; |
| var keys = []; |
| var values = []; |
| |
| if (key instanceof Array) { |
| keys = key; |
| values = value; |
| } else { |
| keys = [key]; |
| values = [value]; |
| } |
| |
| openTransaction(this, IDBT_READ_WRITE, function (transaction) { |
| transaction.onabort = getError(error, defaultError); |
| transaction.oncomplete = function () { |
| if (key instanceof Array) { |
| success(keys, values); |
| } else { |
| success(key, value); |
| } |
| }; |
| |
| for (var i = 0; i < keys.length && i < values.length; i++) { |
| var record = { v: values[i] }; |
| transaction.objectStore(name).put(record, keys[i]); |
| } |
| }, error); |
| }; |
| |
| IndexedDBStore.prototype.clear = function (success, error) { |
| /// <summary>Clears the store</summary> |
| /// <param name="success" type="Function">The success callback</param> |
| /// <param name="error" type="Function">The error callback</param> |
| var name = this.name; |
| var defaultError = this.defaultError; |
| openTransaction(this, IDBT_READ_WRITE, function (transaction) { |
| transaction.onerror = getError(error, defaultError); |
| transaction.oncomplete = function () { |
| success(); |
| }; |
| |
| transaction.objectStore(name).clear(); |
| }, error); |
| }; |
| |
| IndexedDBStore.prototype.close = function () { |
| /// <summary>Closes the connection to the database</summary> |
| if (this.db) { |
| this.db.close(); |
| this.db = null; |
| } |
| }; |
| |
| IndexedDBStore.prototype.contains = function (key, success, error) { |
| /// <summary>Returns whether the store contains a key</summary> |
| /// <param name="key" type="String">The key</param> |
| /// <param name="success" type="Function">The success callback</param> |
| /// <param name="error" type="Function">The error callback</param> |
| var name = this.name; |
| var defaultError = this.defaultError; |
| openTransaction(this, IDBT_READ_ONLY, function (transaction) { |
| var objectStore = transaction.objectStore(name); |
| var request = objectStore["get"](key); |
| |
| transaction.oncomplete = function () { |
| success(!!request.result); |
| }; |
| transaction.onerror = getError(error, defaultError); |
| }, error); |
| }; |
| |
| IndexedDBStore.prototype.defaultError = throwErrorCallback; |
| |
| IndexedDBStore.prototype.getAllKeys = function (success, error) { |
| /// <summary>Gets all the keys from the store</summary> |
| /// <param name="success" type="Function">The success callback</param> |
| /// <param name="error" type="Function">The error callback</param> |
| var name = this.name; |
| var defaultError = this.defaultError; |
| openTransaction(this, IDBT_READ_WRITE, function (transaction) { |
| var results = []; |
| |
| transaction.oncomplete = function () { |
| success(results); |
| }; |
| |
| var request = transaction.objectStore(name).openCursor(); |
| |
| request.onerror = getError(error, defaultError); |
| request.onsuccess = function (event) { |
| var cursor = event.target.result; |
| if (cursor) { |
| results.push(cursor.key); |
| // Some tools have issues because continue is a javascript reserved word. |
| cursor["continue"].call(cursor); |
| } |
| }; |
| }, error); |
| }; |
| |
| /// <summary>Identifies the underlying mechanism used by the store.</summary> |
| IndexedDBStore.prototype.mechanism = "indexeddb"; |
| |
| IndexedDBStore.prototype.read = function (key, success, error) { |
| /// <summary>Reads the value for the specified key</summary> |
| /// <param name="key" type="String">The key</param> |
| /// <param name="success" type="Function">The success callback</param> |
| /// <param name="error" type="Function">The error callback</param> |
| /// <remarks>If the key does not exist, the success handler will be called with value = undefined</remarks> |
| var name = this.name; |
| var defaultError = this.defaultError; |
| var keys = (key instanceof Array) ? key : [key]; |
| |
| openTransaction(this, IDBT_READ_ONLY, function (transaction) { |
| var values = []; |
| |
| transaction.onerror = getError(error, defaultError, key, "read"); |
| transaction.oncomplete = function () { |
| if (key instanceof Array) { |
| success(keys, values); |
| } else { |
| success(keys[0], values[0]); |
| } |
| }; |
| |
| for (var i = 0; i < keys.length; i++) { |
| // Some tools have issues because get is a javascript reserved word. |
| var objectStore = transaction.objectStore(name); |
| var request = objectStore["get"].call(objectStore, keys[i]); |
| request.onsuccess = function (event) { |
| var record = event.target.result; |
| values.push(record ? record.v : undefined); |
| }; |
| } |
| }, error); |
| }; |
| |
| IndexedDBStore.prototype.remove = function (key, success, error) { |
| /// <summary>Removes the specified key from the store</summary> |
| /// <param name="key" type="String">The key</param> |
| /// <param name="success" type="Function">The success callback</param> |
| /// <param name="error" type="Function">The error callback</param> |
| var name = this.name; |
| var defaultError = this.defaultError; |
| var keys = (key instanceof Array) ? key : [key]; |
| |
| openTransaction(this, IDBT_READ_WRITE, function (transaction) { |
| transaction.onerror = getError(error, defaultError); |
| transaction.oncomplete = function () { |
| success(); |
| }; |
| |
| for (var i = 0; i < keys.length; i++) { |
| // Some tools have issues because continue is a javascript reserved word. |
| var objectStore = transaction.objectStore(name); |
| objectStore["delete"].call(objectStore, keys[i]); |
| } |
| }, error); |
| }; |
| |
| IndexedDBStore.prototype.update = function (key, value, success, error) { |
| /// <summary>Updates a key/value pair in the store</summary> |
| /// <param name="key" type="String">The key</param> |
| /// <param name="value" type="Object">The value</param> |
| /// <param name="success" type="Function">The success callback</param> |
| /// <param name="error" type="Function">The error callback</param> |
| var name = this.name; |
| var defaultError = this.defaultError; |
| var keys = []; |
| var values = []; |
| |
| if (key instanceof Array) { |
| keys = key; |
| values = value; |
| } else { |
| keys = [key]; |
| values = [value]; |
| } |
| |
| openTransaction(this, IDBT_READ_WRITE, function (transaction) { |
| transaction.onabort = getError(error, defaultError); |
| transaction.oncomplete = function () { |
| if (key instanceof Array) { |
| success(keys, values); |
| } else { |
| success(key, value); |
| } |
| }; |
| |
| for (var i = 0; i < keys.length && i < values.length; i++) { |
| var request = transaction.objectStore(name).openCursor(IDBKeyRange.only(keys[i])); |
| var record = { v: values[i] }; |
| request.pair = { key: keys[i], value: record }; |
| request.onsuccess = function (event) { |
| var cursor = event.target.result; |
| if (cursor) { |
| cursor.update(event.target.pair.value); |
| } else { |
| transaction.abort(); |
| } |
| }; |
| } |
| }, error); |
| }; |
| |
| // DATAJS INTERNAL START |
| datajs.IndexedDBStore = IndexedDBStore; |
| // DATAJS INTERNAL END |
| |
| // CONTENT END |
| })(this); |