root / trunk / web / dojo / dojox / data / KeyValueStore.js @ 9
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/*
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Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojox.data.KeyValueStore"]){ |
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dojo._hasResource["dojox.data.KeyValueStore"]=true; |
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dojo.provide("dojox.data.KeyValueStore");
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dojo.require("dojo.data.util.filter");
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dojo.require("dojo.data.util.simpleFetch");
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dojo.declare("dojox.data.KeyValueStore",null,{constructor:function(_1){ |
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if(_1.url){
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this.url=_1.url;
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} |
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this._keyValueString=_1.data;
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this._keyValueVar=_1.dataVar;
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this._keyAttribute="key"; |
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this._valueAttribute="value"; |
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this._storeProp="_keyValueStore"; |
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this._features={"dojo.data.api.Read":true,"dojo.data.api.Identity":true}; |
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this._loadInProgress=false; |
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this._queuedFetches=[];
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if(_1&&"urlPreventCache" in _1){ |
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this.urlPreventCache=_1.urlPreventCache?true:false; |
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} |
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},url:"",data:"",urlPreventCache:false,_assertIsItem:function(_2){ |
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if(!this.isItem(_2)){ |
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throw new Error("dojox.data.KeyValueStore: a function was passed an item argument that was not an item"); |
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} |
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},_assertIsAttribute:function(_3,_4){ |
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if(!dojo.isString(_4)){
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throw new Error("dojox.data.KeyValueStore: a function was passed an attribute argument that was not an attribute object nor an attribute name string"); |
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} |
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},getValue:function(_5,_6,_7){ |
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this._assertIsItem(_5);
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this._assertIsAttribute(_5,_6);
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var _8;
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if(_6==this._keyAttribute){ |
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_8=_5[this._keyAttribute];
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}else{
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_8=_5[this._valueAttribute];
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} |
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if(_8===undefined){ |
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_8=_7; |
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} |
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return _8;
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},getValues:function(_9,_a){ |
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var _b=this.getValue(_9,_a); |
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return (_b?[_b]:[]);
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},getAttributes:function(_c){ |
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return [this._keyAttribute,this._valueAttribute,_c[this._keyAttribute]]; |
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},hasAttribute:function(_d,_e){ |
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this._assertIsItem(_d);
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this._assertIsAttribute(_d,_e);
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return (_e==this._keyAttribute||_e==this._valueAttribute||_e==_d[this._keyAttribute]); |
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},containsValue:function(_f,_10,_11){ |
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var _12=undefined; |
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if(typeof _11==="string"){ |
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_12=dojo.data.util.filter.patternToRegExp(_11,false);
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} |
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return this._containsValue(_f,_10,_11,_12); |
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},_containsValue:function(_13,_14,_15,_16){ |
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var _17=this.getValues(_13,_14); |
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for(var i=0;i<_17.length;++i){ |
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var _18=_17[i];
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if(typeof _18==="string"&&_16){ |
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return (_18.match(_16)!==null); |
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}else{
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if(_15===_18){
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return true; |
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} |
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} |
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} |
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return false; |
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},isItem:function(_19){ |
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if(_19&&_19[this._storeProp]===this){ |
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return true; |
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} |
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return false; |
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},isItemLoaded:function(_1a){ |
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return this.isItem(_1a); |
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},loadItem:function(_1b){ |
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},getFeatures:function(){ |
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return this._features; |
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},close:function(_1c){ |
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},getLabel:function(_1d){ |
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return _1d[this._keyAttribute]; |
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},getLabelAttributes:function(_1e){ |
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return [this._keyAttribute]; |
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},_fetchItems:function(_1f,_20,_21){ |
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var _22=this; |
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var _23=function(_24,_25){ |
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var _26=null; |
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if(_24.query){
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_26=[]; |
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var _27=_24.queryOptions?_24.queryOptions.ignoreCase:false; |
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var _28={};
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for(var key in _24.query){ |
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var _29=_24.query[key];
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if(typeof _29==="string"){ |
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_28[key]=dojo.data.util.filter.patternToRegExp(_29,_27); |
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} |
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} |
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for(var i=0;i<_25.length;++i){ |
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var _2a=true; |
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var _2b=_25[i];
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for(var key in _24.query){ |
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var _29=_24.query[key];
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if(!_22._containsValue(_2b,key,_29,_28[key])){
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_2a=false;
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} |
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} |
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if(_2a){
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_26.push(_2b); |
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} |
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} |
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}else{
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if(_24.identity){
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_26=[]; |
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var _2c;
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for(var key in _25){ |
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_2c=_25[key]; |
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if(_2c[_22._keyAttribute]==_24.identity){
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_26.push(_2c); |
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break;
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} |
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} |
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}else{
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if(_25.length>0){ |
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_26=_25.slice(0,_25.length);
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} |
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} |
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} |
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_20(_26,_24); |
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}; |
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if(this._loadFinished){ |
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_23(_1f,this._arrayOfAllItems);
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}else{
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if(this.url!==""){ |
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if(this._loadInProgress){ |
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this._queuedFetches.push({args:_1f,filter:_23}); |
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}else{
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this._loadInProgress=true; |
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var _2d={url:_22.url,handleAs:"json-comment-filtered",preventCache:this.urlPreventCache}; |
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var _2e=dojo.xhrGet(_2d);
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_2e.addCallback(function(_2f){
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_22._processData(_2f); |
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_23(_1f,_22._arrayOfAllItems); |
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_22._handleQueuedFetches(); |
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}); |
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_2e.addErrback(function(_30){
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_22._loadInProgress=false;
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throw _30;
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}); |
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} |
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}else{
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if(this._keyValueString){ |
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this._processData(eval(this._keyValueString)); |
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this._keyValueString=null; |
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_23(_1f,this._arrayOfAllItems);
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}else{
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if(this._keyValueVar){ |
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this._processData(this._keyValueVar); |
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this._keyValueVar=null; |
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_23(_1f,this._arrayOfAllItems);
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}else{
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throw new Error("dojox.data.KeyValueStore: No source data was provided as either URL, String, or Javascript variable data input."); |
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} |
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} |
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} |
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} |
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},_handleQueuedFetches:function(){ |
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if(this._queuedFetches.length>0){ |
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for(var i=0;i<this._queuedFetches.length;i++){ |
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var _31=this._queuedFetches[i]; |
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var _32=_31.filter;
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var _33=_31.args;
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if(_32){
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_32(_33,this._arrayOfAllItems);
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}else{
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this.fetchItemByIdentity(_31.args);
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} |
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} |
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this._queuedFetches=[];
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} |
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},_processData:function(_34){ |
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this._arrayOfAllItems=[];
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for(var i=0;i<_34.length;i++){ |
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this._arrayOfAllItems.push(this._createItem(_34[i])); |
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} |
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this._loadFinished=true; |
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this._loadInProgress=false; |
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},_createItem:function(_35){ |
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var _36={};
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_36[this._storeProp]=this; |
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for(var i in _35){ |
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_36[this._keyAttribute]=i;
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_36[this._valueAttribute]=_35[i];
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break;
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} |
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return _36;
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},getIdentity:function(_37){ |
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if(this.isItem(_37)){ |
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return _37[this._keyAttribute]; |
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} |
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return null; |
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},getIdentityAttributes:function(_38){ |
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return [this._keyAttribute]; |
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},fetchItemByIdentity:function(_39){ |
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_39.oldOnItem=_39.onItem; |
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_39.onItem=null;
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_39.onComplete=this._finishFetchItemByIdentity;
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this.fetch(_39);
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},_finishFetchItemByIdentity:function(_3a,_3b){ |
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var _3c=_3b.scope||dojo.global;
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if(_3a.length){
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_3b.oldOnItem.call(_3c,_3a[0]);
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}else{
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_3b.oldOnItem.call(_3c,null);
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} |
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}}); |
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dojo.extend(dojox.data.KeyValueStore,dojo.data.util.simpleFetch); |
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} |