ddbb72b88a
Track whether an object is in the cache based on whether it is in the cache instead of utilizing a separate object for tracking contents of cache. See comment on https://github.com/nasa/openmct/pull/773/files
84 lines
2.9 KiB
JavaScript
84 lines
2.9 KiB
JavaScript
/*****************************************************************************
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* Open MCT Web, Copyright (c) 2014-2015, 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 Web 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 Web 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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define([], function () {
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'use strict';
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/**
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* Provides a cache for domain object models which exist in memory,
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* but may or may not exist in backing persistene stores.
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* @constructor
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* @memberof platform/core
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*/
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function ModelCacheService() {
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this.cache = {};
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}
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/**
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* Put a domain object model in the cache.
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* @param {string} id the domain object's identifier
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* @param {object} model the domain object's model
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*/
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ModelCacheService.prototype.put = function (id, model) {
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this.cache[id] = model;
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};
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/**
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* Retrieve a domain object model from the cache.
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* @param {string} id the domain object's identifier
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* @returns {object} the domain object's model
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*/
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ModelCacheService.prototype.get = function (id) {
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return this.cache[id];
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};
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/**
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* Check if a domain object model is in the cache.
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* @param {string} id the domain object's identifier
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* @returns {boolean} true if present; false if not
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*/
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ModelCacheService.prototype.has = function (id) {
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return this.cache.hasOwnProperty(id);
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};
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/**
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* Remove a domain object model from the cache.
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* @param {string} id the domain object's identifier
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*/
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ModelCacheService.prototype.remove = function (id) {
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delete this.cache[id];
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};
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/**
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* Retrieve all cached domain object models. These are given
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* as an object containing key-value pairs, where keys are
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* domain object identifiers and values are domain object models.
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* @returns {object} all domain object models
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*/
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ModelCacheService.prototype.all = function () {
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return this.cache;
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};
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return ModelCacheService;
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});
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