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DirectProxy.js
资源名称:ext-3.1.0.zip [点击查看]
上传用户:dawnssy
上传日期:2022-08-06
资源大小:9345k
文件大小:7k
源码类别:
JavaScript
开发平台:
JavaScript
- /*! * Ext JS Library 3.1.0 * Copyright(c) 2006-2009 Ext JS, LLC * licensing@extjs.com * http://www.extjs.com/license */ /**
- * @class Ext.data.DirectProxy
- * @extends Ext.data.DataProxy
- */
- Ext.data.DirectProxy = function(config){
- Ext.apply(this, config);
- if(typeof this.paramOrder == 'string'){
- this.paramOrder = this.paramOrder.split(/[s,|]/);
- }
- Ext.data.DirectProxy.superclass.constructor.call(this, config);
- };
- Ext.extend(Ext.data.DirectProxy, Ext.data.DataProxy, {
- /**
- * @cfg {Array/String} paramOrder Defaults to <tt>undefined</tt>. A list of params to be executed
- * server side. Specify the params in the order in which they must be executed on the server-side
- * as either (1) an Array of String values, or (2) a String of params delimited by either whitespace,
- * comma, or pipe. For example,
- * any of the following would be acceptable:<pre><code>
- paramOrder: ['param1','param2','param3']
- paramOrder: 'param1 param2 param3'
- paramOrder: 'param1,param2,param3'
- paramOrder: 'param1|param2|param'
- </code></pre>
- */
- paramOrder: undefined,
- /**
- * @cfg {Boolean} paramsAsHash
- * Send parameters as a collection of named arguments (defaults to <tt>true</tt>). Providing a
- * <tt>{@link #paramOrder}</tt> nullifies this configuration.
- */
- paramsAsHash: true,
- /**
- * @cfg {Function} directFn
- * Function to call when executing a request. directFn is a simple alternative to defining the api configuration-parameter
- * for Store's which will not implement a full CRUD api.
- */
- directFn : undefined,
- /**
- * DirectProxy implementation of {@link Ext.data.DataProxy#doRequest}
- * @param {String} action The crud action type (create, read, update, destroy)
- * @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
- * <div class="sub-desc"><p>A function to be called after the request.
- * The <tt>callback</tt> is passed the following arguments:<ul>
- * <li><tt>r</tt> : Ext.data.Record[] The block of Ext.data.Records.</li>
- * <li><tt>options</tt>: Options object from the action request</li>
- * <li><tt>success</tt>: Boolean success indicator</li></ul></p></div>
- * @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.
- * @protected
- */
- doRequest : function(action, rs, params, reader, callback, scope, options) {
- var args = [],
- directFn = this.api[action] || this.directFn;
- switch (action) {
- case Ext.data.Api.actions.create:
- args.push(params.jsonData); // <-- create(Hash)
- break;
- case Ext.data.Api.actions.read:
- // If the method has no parameters, ignore the paramOrder/paramsAsHash.
- if(directFn.directCfg.method.len > 0){
- if(this.paramOrder){
- for(var i = 0, len = this.paramOrder.length; i < len; i++){
- args.push(params[this.paramOrder[i]]);
- }
- }else if(this.paramsAsHash){
- args.push(params);
- }
- }
- break;
- case Ext.data.Api.actions.update:
- args.push(params.jsonData); // <-- update(Hash/Hash[])
- break;
- case Ext.data.Api.actions.destroy:
- args.push(params.jsonData); // <-- destroy(Int/Int[])
- break;
- }
- var trans = {
- params : params || {},
- request: {
- callback : callback,
- scope : scope,
- arg : options
- },
- reader: reader
- };
- args.push(this.createCallback(action, rs, trans), this);
- directFn.apply(window, args);
- },
- // private
- createCallback : function(action, rs, trans) {
- return function(result, res) {
- if (!res.status) {
- // @deprecated fire loadexception
- if (action === Ext.data.Api.actions.read) {
- this.fireEvent("loadexception", this, trans, res, null);
- }
- this.fireEvent('exception', this, 'remote', action, trans, res, null);
- trans.request.callback.call(trans.request.scope, null, trans.request.arg, false);
- return;
- }
- if (action === Ext.data.Api.actions.read) {
- this.onRead(action, trans, result, res);
- } else {
- this.onWrite(action, trans, result, res, rs);
- }
- };
- },
- /**
- * Callback for read actions
- * @param {String} action [Ext.data.Api.actions.create|read|update|destroy]
- * @param {Object} trans The request transaction object
- * @param {Object} result Data object picked out of the server-response.
- * @param {Object} res The server response
- * @protected
- */
- onRead : function(action, trans, result, res) {
- var records;
- try {
- records = trans.reader.readRecords(result);
- }
- catch (ex) {
- // @deprecated: Fire old loadexception for backwards-compat.
- this.fireEvent("loadexception", this, trans, res, ex);
- this.fireEvent('exception', this, 'response', action, trans, res, ex);
- trans.request.callback.call(trans.request.scope, null, trans.request.arg, false);
- return;
- }
- this.fireEvent("load", this, res, trans.request.arg);
- trans.request.callback.call(trans.request.scope, records, trans.request.arg, true);
- },
- /**
- * Callback for write actions
- * @param {String} action [{@link Ext.data.Api#actions create|read|update|destroy}]
- * @param {Object} trans The request transaction object
- * @param {Object} result Data object picked out of the server-response.
- * @param {Object} res The server response
- * @param {Ext.data.Record/[Ext.data.Record]} rs The Store resultset associated with the action.
- * @protected
- */
- onWrite : function(action, trans, result, res, rs) {
- var data = trans.reader.extractData(result, false);
- this.fireEvent("write", this, action, data, res, rs, trans.request.arg);
- trans.request.callback.call(trans.request.scope, data, res, true);
- }
- });