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<title>The source code</title>
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<pre class="prettyprint lang-js">/*!
* Ext JS Library 3.4.0
* Copyright(c) 2006-2011 Sencha Inc.
* licensing@sencha.com
* http://www.sencha.com/license
*/
<div id="cls-Ext.data.MemoryProxy"></div>/**
* @class Ext.data.MemoryProxy
* @extends Ext.data.DataProxy
* An implementation of Ext.data.DataProxy that simply passes the data specified in its constructor
* to the Reader when its load method is called.
* @constructor
* @param {Object} data The data object which the Reader uses to construct a block of Ext.data.Records.
*/
Ext.data.MemoryProxy = function(data){
// Must define a dummy api with "read" action to satisfy DataProxy#doRequest and Ext.data.Api#prepare *before* calling super
var api = {};
api[Ext.data.Api.actions.read] = true;
Ext.data.MemoryProxy.superclass.constructor.call(this, {
api: api
});
this.data = data;
};
Ext.extend(Ext.data.MemoryProxy, Ext.data.DataProxy, {
<div id="event-Ext.data.MemoryProxy-loadexception"></div>/**
* @event loadexception
* Fires if an exception occurs in the Proxy during data loading. Note that this event is also relayed
* through {@link Ext.data.Store}, so you can listen for it directly on any Store instance.
* @param {Object} this
* @param {Object} arg The callback's arg object passed to the {@link #load} function
* @param {Object} null This parameter does not apply and will always be null for MemoryProxy
* @param {Error} e The JavaScript Error object caught if the configured Reader could not read the data
*/
<div id="method-Ext.data.MemoryProxy-doRequest"></div>/**
* MemoryProxy implementation of DataProxy#doRequest
* @param {String} action
* @param {Ext.data.Record/Ext.data.Record[]} rs If action is load, rs will be null
* @param {Object} params An object containing properties which are to be used as HTTP parameters
* for the request to the remote server.
* @param {Ext.data.DataReader} reader The Reader object which converts the data
* object into a block of Ext.data.Records.
* @param {Function} callback The function into which to pass the block of Ext.data.Records.
* The function must be passed <ul>
* <li>The Record block object</li>
* <li>The "arg" argument from the load function</li>
* <li>A boolean success indicator</li>
* </ul>
* @param {Object} scope The scope (<code>this</code> reference) in which the callback function is executed. Defaults to the browser window.
* @param {Object} arg An optional argument which is passed to the callback as its second parameter.
*/
doRequest : function(action, rs, params, reader, callback, scope, arg) {
// No implementation for CRUD in MemoryProxy. Assumes all actions are 'load'
params = params || {};
var result;
try {
result = reader.readRecords(this.data);
}catch(e){
// @deprecated loadexception
this.fireEvent("loadexception", this, null, arg, e);
this.fireEvent('exception', this, 'response', action, arg, null, e);
callback.call(scope, null, arg, false);
return;
}
callback.call(scope, result, arg, true);
}
});</pre>
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