root / trunk / web / dojo / dojox / data / KeyValueStore.js
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| 1 | 9 | andrej.cim | /*
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| 2 | Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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| 3 | Available via Academic Free License >= 2.1 OR the modified BSD license.
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| 4 | see: http://dojotoolkit.org/license for details
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| 5 | */
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| 6 | |||
| 7 | |||
| 8 | if(!dojo._hasResource["dojox.data.KeyValueStore"]){ |
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| 9 | dojo._hasResource["dojox.data.KeyValueStore"]=true; |
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| 10 | dojo.provide("dojox.data.KeyValueStore");
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| 11 | dojo.require("dojo.data.util.filter");
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| 12 | dojo.require("dojo.data.util.simpleFetch");
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| 13 | dojo.declare("dojox.data.KeyValueStore",null,{constructor:function(_1){ |
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| 14 | if(_1.url){
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| 15 | this.url=_1.url;
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| 16 | } |
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| 17 | this._keyValueString=_1.data;
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| 18 | this._keyValueVar=_1.dataVar;
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| 19 | this._keyAttribute="key"; |
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| 20 | this._valueAttribute="value"; |
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| 21 | this._storeProp="_keyValueStore"; |
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| 22 | this._features={"dojo.data.api.Read":true,"dojo.data.api.Identity":true}; |
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| 23 | this._loadInProgress=false; |
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| 24 | this._queuedFetches=[];
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| 25 | if(_1&&"urlPreventCache" in _1){ |
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| 26 | this.urlPreventCache=_1.urlPreventCache?true:false; |
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| 27 | } |
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| 28 | },url:"",data:"",urlPreventCache:false,_assertIsItem:function(_2){ |
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| 29 | if(!this.isItem(_2)){ |
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| 30 | throw new Error("dojox.data.KeyValueStore: a function was passed an item argument that was not an item"); |
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| 31 | } |
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| 32 | },_assertIsAttribute:function(_3,_4){ |
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| 33 | if(!dojo.isString(_4)){
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| 34 | 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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| 35 | } |
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| 36 | },getValue:function(_5,_6,_7){ |
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| 37 | this._assertIsItem(_5);
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| 38 | this._assertIsAttribute(_5,_6);
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| 39 | var _8;
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| 40 | if(_6==this._keyAttribute){ |
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| 41 | _8=_5[this._keyAttribute];
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| 42 | }else{
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| 43 | _8=_5[this._valueAttribute];
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| 44 | } |
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| 45 | if(_8===undefined){ |
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| 46 | _8=_7; |
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| 47 | } |
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| 48 | return _8;
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| 49 | },getValues:function(_9,_a){ |
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| 50 | var _b=this.getValue(_9,_a); |
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| 51 | return (_b?[_b]:[]);
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| 52 | },getAttributes:function(_c){ |
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| 53 | return [this._keyAttribute,this._valueAttribute,_c[this._keyAttribute]]; |
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| 54 | },hasAttribute:function(_d,_e){ |
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| 55 | this._assertIsItem(_d);
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| 56 | this._assertIsAttribute(_d,_e);
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| 57 | return (_e==this._keyAttribute||_e==this._valueAttribute||_e==_d[this._keyAttribute]); |
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| 58 | },containsValue:function(_f,_10,_11){ |
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| 59 | var _12=undefined; |
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| 60 | if(typeof _11==="string"){ |
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| 61 | _12=dojo.data.util.filter.patternToRegExp(_11,false);
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| 62 | } |
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| 63 | return this._containsValue(_f,_10,_11,_12); |
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| 64 | },_containsValue:function(_13,_14,_15,_16){ |
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| 65 | var _17=this.getValues(_13,_14); |
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| 66 | for(var i=0;i<_17.length;++i){ |
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| 67 | var _18=_17[i];
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| 68 | if(typeof _18==="string"&&_16){ |
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| 69 | return (_18.match(_16)!==null); |
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| 70 | }else{
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| 71 | if(_15===_18){
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| 72 | return true; |
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| 73 | } |
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| 74 | } |
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| 75 | } |
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| 76 | return false; |
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| 77 | },isItem:function(_19){ |
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| 78 | if(_19&&_19[this._storeProp]===this){ |
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| 79 | return true; |
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| 80 | } |
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| 81 | return false; |
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| 82 | },isItemLoaded:function(_1a){ |
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| 83 | return this.isItem(_1a); |
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| 84 | },loadItem:function(_1b){ |
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| 85 | },getFeatures:function(){ |
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| 86 | return this._features; |
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| 87 | },close:function(_1c){ |
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| 88 | },getLabel:function(_1d){ |
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| 89 | return _1d[this._keyAttribute]; |
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| 90 | },getLabelAttributes:function(_1e){ |
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| 91 | return [this._keyAttribute]; |
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| 92 | },_fetchItems:function(_1f,_20,_21){ |
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| 93 | var _22=this; |
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| 94 | var _23=function(_24,_25){ |
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| 95 | var _26=null; |
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| 96 | if(_24.query){
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| 97 | _26=[]; |
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| 98 | var _27=_24.queryOptions?_24.queryOptions.ignoreCase:false; |
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| 99 | var _28={};
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| 100 | for(var key in _24.query){ |
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| 101 | var _29=_24.query[key];
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| 102 | if(typeof _29==="string"){ |
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| 103 | _28[key]=dojo.data.util.filter.patternToRegExp(_29,_27); |
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| 104 | } |
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| 105 | } |
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| 106 | for(var i=0;i<_25.length;++i){ |
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| 107 | var _2a=true; |
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| 108 | var _2b=_25[i];
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| 109 | for(var key in _24.query){ |
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| 110 | var _29=_24.query[key];
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| 111 | if(!_22._containsValue(_2b,key,_29,_28[key])){
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| 112 | _2a=false;
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| 113 | } |
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| 114 | } |
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| 115 | if(_2a){
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| 116 | _26.push(_2b); |
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| 117 | } |
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| 118 | } |
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| 119 | }else{
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| 120 | if(_24.identity){
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| 121 | _26=[]; |
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| 122 | var _2c;
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| 123 | for(var key in _25){ |
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| 124 | _2c=_25[key]; |
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| 125 | if(_2c[_22._keyAttribute]==_24.identity){
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| 126 | _26.push(_2c); |
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| 127 | break;
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| 128 | } |
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| 129 | } |
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| 130 | }else{
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| 131 | if(_25.length>0){ |
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| 132 | _26=_25.slice(0,_25.length);
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| 133 | } |
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| 134 | } |
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| 135 | } |
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| 136 | _20(_26,_24); |
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| 137 | }; |
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| 138 | if(this._loadFinished){ |
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| 139 | _23(_1f,this._arrayOfAllItems);
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| 140 | }else{
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| 141 | if(this.url!==""){ |
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| 142 | if(this._loadInProgress){ |
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| 143 | this._queuedFetches.push({args:_1f,filter:_23}); |
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| 144 | }else{
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| 145 | this._loadInProgress=true; |
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| 146 | var _2d={url:_22.url,handleAs:"json-comment-filtered",preventCache:this.urlPreventCache}; |
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| 147 | var _2e=dojo.xhrGet(_2d);
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| 148 | _2e.addCallback(function(_2f){
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| 149 | _22._processData(_2f); |
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| 150 | _23(_1f,_22._arrayOfAllItems); |
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| 151 | _22._handleQueuedFetches(); |
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| 152 | }); |
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| 153 | _2e.addErrback(function(_30){
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| 154 | _22._loadInProgress=false;
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| 155 | throw _30;
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| 156 | }); |
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| 157 | } |
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| 158 | }else{
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| 159 | if(this._keyValueString){ |
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| 160 | this._processData(eval(this._keyValueString)); |
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| 161 | this._keyValueString=null; |
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| 162 | _23(_1f,this._arrayOfAllItems);
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| 163 | }else{
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| 164 | if(this._keyValueVar){ |
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| 165 | this._processData(this._keyValueVar); |
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| 166 | this._keyValueVar=null; |
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| 167 | _23(_1f,this._arrayOfAllItems);
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| 168 | }else{
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| 169 | throw new Error("dojox.data.KeyValueStore: No source data was provided as either URL, String, or Javascript variable data input."); |
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| 170 | } |
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| 171 | } |
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| 172 | } |
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| 173 | } |
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| 174 | },_handleQueuedFetches:function(){ |
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| 175 | if(this._queuedFetches.length>0){ |
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| 176 | for(var i=0;i<this._queuedFetches.length;i++){ |
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| 177 | var _31=this._queuedFetches[i]; |
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| 178 | var _32=_31.filter;
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| 179 | var _33=_31.args;
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| 180 | if(_32){
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| 181 | _32(_33,this._arrayOfAllItems);
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| 182 | }else{
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| 183 | this.fetchItemByIdentity(_31.args);
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| 184 | } |
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| 185 | } |
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| 186 | this._queuedFetches=[];
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| 187 | } |
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| 188 | },_processData:function(_34){ |
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| 189 | this._arrayOfAllItems=[];
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| 190 | for(var i=0;i<_34.length;i++){ |
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| 191 | this._arrayOfAllItems.push(this._createItem(_34[i])); |
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| 192 | } |
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| 193 | this._loadFinished=true; |
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| 194 | this._loadInProgress=false; |
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| 195 | },_createItem:function(_35){ |
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| 196 | var _36={};
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| 197 | _36[this._storeProp]=this; |
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| 198 | for(var i in _35){ |
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| 199 | _36[this._keyAttribute]=i;
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| 200 | _36[this._valueAttribute]=_35[i];
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| 201 | break;
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| 202 | } |
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| 203 | return _36;
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| 204 | },getIdentity:function(_37){ |
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| 205 | if(this.isItem(_37)){ |
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| 206 | return _37[this._keyAttribute]; |
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| 207 | } |
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| 208 | return null; |
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| 209 | },getIdentityAttributes:function(_38){ |
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| 210 | return [this._keyAttribute]; |
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| 211 | },fetchItemByIdentity:function(_39){ |
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| 212 | _39.oldOnItem=_39.onItem; |
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| 213 | _39.onItem=null;
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| 214 | _39.onComplete=this._finishFetchItemByIdentity;
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| 215 | this.fetch(_39);
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| 216 | },_finishFetchItemByIdentity:function(_3a,_3b){ |
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| 217 | var _3c=_3b.scope||dojo.global;
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| 218 | if(_3a.length){
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| 219 | _3b.oldOnItem.call(_3c,_3a[0]);
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| 220 | }else{
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| 221 | _3b.oldOnItem.call(_3c,null);
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| 222 | } |
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| 223 | }}); |
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| 224 | dojo.extend(dojox.data.KeyValueStore,dojo.data.util.simpleFetch); |
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| 225 | } |