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104 lines
3.4 KiB
JavaScript
104 lines
3.4 KiB
JavaScript
/*****************************************************************************
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* Open MCT, Copyright (c) 2014-2017, United States Government
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* as represented by the Administrator of the National Aeronautics and Space
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* Administration. All rights reserved.
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*
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* Open MCT is licensed under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* Open MCT includes source code licensed under additional open source
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* licenses. See the Open Source Licenses file (LICENSES.md) included with
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* this source code distribution or the Licensing information page available
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* at runtime from the About dialog for additional information.
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*****************************************************************************/
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/*global define*/
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/**
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* Stubbed implementation of a persistence provider,
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* to permit objects to be created, saved, etc.
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*/
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define(
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[],
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function () {
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'use strict';
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function BrowserPersistenceProvider($q, SPACE) {
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var spaces = SPACE ? [SPACE] : [],
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caches = {},
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promises = {
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as: function (value) {
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return $q.when(value);
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}
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};
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spaces.forEach(function (space) {
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caches[space] = {};
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});
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return {
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listSpaces: function () {
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return promises.as(spaces);
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},
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listObjects: function (space) {
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var cache = caches[space];
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return promises.as(
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cache ? Object.keys(cache) : null
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);
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},
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createObject: function (space, key, value) {
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var cache = caches[space];
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if (!cache || cache[key]) {
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return promises.as(null);
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}
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cache[key] = value;
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return promises.as(true);
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},
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readObject: function (space, key) {
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var cache = caches[space];
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return promises.as(
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cache ? cache[key] : null
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);
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},
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updateObject: function (space, key, value) {
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var cache = caches[space];
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if (!cache || !cache[key]) {
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return promises.as(null);
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}
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cache[key] = value;
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return promises.as(true);
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},
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deleteObject: function (space, key, value) {
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var cache = caches[space];
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if (!cache || !cache[key]) {
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return promises.as(null);
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}
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delete cache[key];
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return promises.as(true);
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}
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};
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}
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return BrowserPersistenceProvider;
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}
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);
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