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MemoryRecordCache.jsm
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MemoryRecordCache.jsm
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
const Cu = Components.utils;
let EXPORTED_SYMBOLS = ['MemoryRecordCache'];
Cu.import("resource://gre/modules/Promise.jsm");
let MemoryRecordCache = function() {
this._cache = new Map();
};
MemoryRecordCache.prototype = {
_cache: null,
setRecord: function(aUID, aRecord) {
let deferred = Promise.defer();
this._cache.set(aUID, aRecord);
deferred.resolve();
return deferred.promise;
},
getRecord: function(aUID) {
let deferred = Promise.defer();
deferred.resolve(this._cache.get(aUID));
return deferred.promise;
},
getAllRecords: function() {
let deferred = Promise.defer();
deferred.resolve(this._cache);
return deferred.promise;
},
hasRecord: function(aUID) {
let deferred = Promise.defer();
deferred.resolve(this._cache.has(aUID));
return deferred.promise;
},
removeRecord: function(aUID) {
let deferred = Promise.defer();
if(this._cache.has(aUID) !== false) {
this._cache.delete(aUID);
deferred.resolve();
} else {
let e = new Error("The record does not exist and therefore" +
"the record could not be removed by the service.");
deferred.reject(e);
}
return deferred.promise;
},
}