1 <html><head><title>Roo/data/DataProxy.js</title><link rel="stylesheet" type="text/css" href="../../css/highlight-js.css"/></head><body class="highlightpage"><code class="jsdoc-pretty"><span class="jsdoc-comment">/*
4 * Copyright(c) 2006-2007, Ext JS, LLC.
6 * Originally Released Under LGPL - original licence link has changed is not relivant.
9 * <script type="text/javascript">
13 * @class Roo.data.DataProxy
14 * @extends Roo.util.Observable
16 * This class is an abstract base class for implementations which provide retrieval of
17 * unformatted data objects.<br>
19 * DataProxy implementations are usually used in conjunction with an implementation of Roo.data.DataReader
20 * (of the appropriate type which knows how to parse the data object) to provide a block of
21 * {@link Roo.data.Records} to an {@link Roo.data.Store}.<br>
23 * Custom implementations must implement the load method as described in
24 * {@link Roo.data.HttpProxy#load}.
26 </span><span class="jsdoc-var">Roo.data.DataProxy </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
27 </span><span class="jsdoc-var">this.addEvents</span><span class="jsdoc-syntax">({
28 </span><span class="jsdoc-comment">/**
30 * Fires before a network request is made to retrieve a data object.
31 * @param {Object} This DataProxy object.
32 * @param {Object} params The params parameter to the load function.
34 </span><span class="jsdoc-var">beforeload </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">,
35 </span><span class="jsdoc-comment">/**
37 * Fires before the load method's callback is called.
38 * @param {Object} This DataProxy object.
39 * @param {Object} o The data object.
40 * @param {Object} arg The callback argument object passed to the load function.
42 </span><span class="jsdoc-var">load </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">,
43 </span><span class="jsdoc-comment">/**
44 * @event loadexception
45 * Fires if an Exception occurs during data retrieval.
46 * @param {Object} This DataProxy object.
47 * @param {Object} o The data object.
48 * @param {Object} arg The callback argument object passed to the load function.
49 * @param {Object} e The Exception.
51 </span><span class="jsdoc-var">loadexception </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true
52 </span><span class="jsdoc-syntax">});
53 </span><span class="jsdoc-var">Roo.data.DataProxy.superclass.constructor.call</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
56 </span><span class="jsdoc-var">Roo.extend</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">Roo.data.DataProxy</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">Roo.util.Observable</span><span class="jsdoc-syntax">);
58 </span><span class="jsdoc-comment">/**
59 * @cfg {void} listeners (Not available) Constructor blocks listeners from being set
61 </span></code></body></html>