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/hippo/src/main/webapp/ext/src/data/DirectProxy.js

http://hdbc.googlecode.com/
JavaScript | 141 lines | 81 code | 10 blank | 50 comment | 12 complexity | 40b5e23ef17047c1b5253f43d7669b40 MD5 | raw file
  1/*!
  2 * Ext JS Library 3.0.0
  3 * Copyright(c) 2006-2009 Ext JS, LLC
  4 * licensing@extjs.com
  5 * http://www.extjs.com/license
  6 */
  7/**
  8 * @class Ext.data.DirectProxy
  9 * @extends Ext.data.DataProxy
 10 */
 11Ext.data.DirectProxy = function(config){
 12    Ext.apply(this, config);
 13    if(typeof this.paramOrder == 'string'){
 14        this.paramOrder = this.paramOrder.split(/[\s,|]/);
 15    }
 16    Ext.data.DirectProxy.superclass.constructor.call(this, config);
 17};
 18
 19Ext.extend(Ext.data.DirectProxy, Ext.data.DataProxy, {
 20    /**
 21     * @cfg {Array/String} paramOrder Defaults to <tt>undefined</tt>. A list of params to be executed
 22     * server side.  Specify the params in the order in which they must be executed on the server-side
 23     * as either (1) an Array of String values, or (2) a String of params delimited by either whitespace,
 24     * comma, or pipe. For example,
 25     * any of the following would be acceptable:<pre><code>
 26paramOrder: ['param1','param2','param3']
 27paramOrder: 'param1 param2 param3'
 28paramOrder: 'param1,param2,param3'
 29paramOrder: 'param1|param2|param'
 30     </code></pre>
 31     */
 32    paramOrder: undefined,
 33
 34    /**
 35     * @cfg {Boolean} paramsAsHash
 36     * Send parameters as a collection of named arguments (defaults to <tt>true</tt>). Providing a
 37     * <tt>{@link #paramOrder}</tt> nullifies this configuration.
 38     */
 39    paramsAsHash: true,
 40
 41    /**
 42     * @cfg {Function} directFn
 43     * Function to call when executing a request.  directFn is a simple alternative to defining the api configuration-parameter
 44     * for Store's which will not implement a full CRUD api.
 45     */
 46    directFn : undefined,
 47
 48    // protected
 49    doRequest : function(action, rs, params, reader, callback, scope, options) {
 50        var args = [];
 51        var directFn = this.api[action] || this.directFn;
 52
 53        switch (action) {
 54            case Ext.data.Api.actions.create:
 55                args.push(params[reader.meta.root]);		// <-- create(Hash)
 56                break;
 57            case Ext.data.Api.actions.read:
 58                if(this.paramOrder){
 59                    for(var i = 0, len = this.paramOrder.length; i < len; i++){
 60                        args.push(params[this.paramOrder[i]]);
 61                    }
 62                }else if(this.paramsAsHash){
 63                    args.push(params);
 64                }
 65                break;
 66            case Ext.data.Api.actions.update:
 67                args.push(params[reader.meta.idProperty]);  // <-- save(Integer/Integer[], Hash/Hash[])
 68                args.push(params[reader.meta.root]);
 69                break;
 70            case Ext.data.Api.actions.destroy:
 71                args.push(params[reader.meta.root]);        // <-- destroy(Int/Int[])
 72                break;
 73        }
 74
 75        var trans = {
 76            params : params || {},
 77            callback : callback,
 78            scope : scope,
 79            arg : options,
 80            reader: reader
 81        };
 82
 83        args.push(this.createCallback(action, rs, trans), this);
 84        directFn.apply(window, args);
 85    },
 86
 87    // private
 88    createCallback : function(action, rs, trans) {
 89        return function(result, res) {
 90            if (!res.status) {
 91                // @deprecated fire loadexception
 92                if (action === Ext.data.Api.actions.read) {
 93                    this.fireEvent("loadexception", this, trans, res, null);
 94                }
 95                this.fireEvent('exception', this, 'remote', action, trans, res, null);
 96                trans.callback.call(trans.scope, null, trans.arg, false);
 97                return;
 98            }
 99            if (action === Ext.data.Api.actions.read) {
100                this.onRead(action, trans, result, res);
101            } else {
102                this.onWrite(action, trans, result, res, rs);
103            }
104        };
105    },
106    /**
107     * Callback for read actions
108     * @param {String} action [Ext.data.Api.actions.create|read|update|destroy]
109     * @param {Object} trans The request transaction object
110     * @param {Object} res The server response
111     * @private
112     */
113    onRead : function(action, trans, result, res) {
114        var records;
115        try {
116            records = trans.reader.readRecords(result);
117        }
118        catch (ex) {
119            // @deprecated: Fire old loadexception for backwards-compat.
120            this.fireEvent("loadexception", this, trans, res, ex);
121
122            this.fireEvent('exception', this, 'response', action, trans, res, ex);
123            trans.callback.call(trans.scope, null, trans.arg, false);
124            return;
125        }
126        this.fireEvent("load", this, res, trans.arg);
127        trans.callback.call(trans.scope, records, trans.arg, true);
128    },
129    /**
130     * Callback for write actions
131     * @param {String} action [Ext.data.Api.actions.create|read|update|destroy]
132     * @param {Object} trans The request transaction object
133     * @param {Object} res The server response
134     * @private
135     */
136    onWrite : function(action, trans, result, res, rs) {
137        this.fireEvent("write", this, action, result, res, rs, trans.arg);
138        trans.callback.call(trans.scope, result, res, true);
139    }
140});
141