root / trunk / web / dojo / dojox / data / KeyValueStore.js @ 12
History | View | Annotate | Download (5.43 KB)
| 1 | 9 | andrej.cim | /*
|
|---|---|---|---|
| 2 | Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
|
||
| 3 | Available via Academic Free License >= 2.1 OR the modified BSD license.
|
||
| 4 | see: http://dojotoolkit.org/license for details
|
||
| 5 | */
|
||
| 6 | |||
| 7 | |||
| 8 | if(!dojo._hasResource["dojox.data.KeyValueStore"]){ |
||
| 9 | dojo._hasResource["dojox.data.KeyValueStore"]=true; |
||
| 10 | dojo.provide("dojox.data.KeyValueStore");
|
||
| 11 | dojo.require("dojo.data.util.filter");
|
||
| 12 | dojo.require("dojo.data.util.simpleFetch");
|
||
| 13 | dojo.declare("dojox.data.KeyValueStore",null,{constructor:function(_1){ |
||
| 14 | if(_1.url){
|
||
| 15 | this.url=_1.url;
|
||
| 16 | } |
||
| 17 | this._keyValueString=_1.data;
|
||
| 18 | this._keyValueVar=_1.dataVar;
|
||
| 19 | this._keyAttribute="key"; |
||
| 20 | this._valueAttribute="value"; |
||
| 21 | this._storeProp="_keyValueStore"; |
||
| 22 | this._features={"dojo.data.api.Read":true,"dojo.data.api.Identity":true}; |
||
| 23 | this._loadInProgress=false; |
||
| 24 | this._queuedFetches=[];
|
||
| 25 | if(_1&&"urlPreventCache" in _1){ |
||
| 26 | this.urlPreventCache=_1.urlPreventCache?true:false; |
||
| 27 | } |
||
| 28 | },url:"",data:"",urlPreventCache:false,_assertIsItem:function(_2){ |
||
| 29 | if(!this.isItem(_2)){ |
||
| 30 | throw new Error("dojox.data.KeyValueStore: a function was passed an item argument that was not an item"); |
||
| 31 | } |
||
| 32 | },_assertIsAttribute:function(_3,_4){ |
||
| 33 | if(!dojo.isString(_4)){
|
||
| 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"); |
||
| 35 | } |
||
| 36 | },getValue:function(_5,_6,_7){ |
||
| 37 | this._assertIsItem(_5);
|
||
| 38 | this._assertIsAttribute(_5,_6);
|
||
| 39 | var _8;
|
||
| 40 | if(_6==this._keyAttribute){ |
||
| 41 | _8=_5[this._keyAttribute];
|
||
| 42 | }else{
|
||
| 43 | _8=_5[this._valueAttribute];
|
||
| 44 | } |
||
| 45 | if(_8===undefined){ |
||
| 46 | _8=_7; |
||
| 47 | } |
||
| 48 | return _8;
|
||
| 49 | },getValues:function(_9,_a){ |
||
| 50 | var _b=this.getValue(_9,_a); |
||
| 51 | return (_b?[_b]:[]);
|
||
| 52 | },getAttributes:function(_c){ |
||
| 53 | return [this._keyAttribute,this._valueAttribute,_c[this._keyAttribute]]; |
||
| 54 | },hasAttribute:function(_d,_e){ |
||
| 55 | this._assertIsItem(_d);
|
||
| 56 | this._assertIsAttribute(_d,_e);
|
||
| 57 | return (_e==this._keyAttribute||_e==this._valueAttribute||_e==_d[this._keyAttribute]); |
||
| 58 | },containsValue:function(_f,_10,_11){ |
||
| 59 | var _12=undefined; |
||
| 60 | if(typeof _11==="string"){ |
||
| 61 | _12=dojo.data.util.filter.patternToRegExp(_11,false);
|
||
| 62 | } |
||
| 63 | return this._containsValue(_f,_10,_11,_12); |
||
| 64 | },_containsValue:function(_13,_14,_15,_16){ |
||
| 65 | var _17=this.getValues(_13,_14); |
||
| 66 | for(var i=0;i<_17.length;++i){ |
||
| 67 | var _18=_17[i];
|
||
| 68 | if(typeof _18==="string"&&_16){ |
||
| 69 | return (_18.match(_16)!==null); |
||
| 70 | }else{
|
||
| 71 | if(_15===_18){
|
||
| 72 | return true; |
||
| 73 | } |
||
| 74 | } |
||
| 75 | } |
||
| 76 | return false; |
||
| 77 | },isItem:function(_19){ |
||
| 78 | if(_19&&_19[this._storeProp]===this){ |
||
| 79 | return true; |
||
| 80 | } |
||
| 81 | return false; |
||
| 82 | },isItemLoaded:function(_1a){ |
||
| 83 | return this.isItem(_1a); |
||
| 84 | },loadItem:function(_1b){ |
||
| 85 | },getFeatures:function(){ |
||
| 86 | return this._features; |
||
| 87 | },close:function(_1c){ |
||
| 88 | },getLabel:function(_1d){ |
||
| 89 | return _1d[this._keyAttribute]; |
||
| 90 | },getLabelAttributes:function(_1e){ |
||
| 91 | return [this._keyAttribute]; |
||
| 92 | },_fetchItems:function(_1f,_20,_21){ |
||
| 93 | var _22=this; |
||
| 94 | var _23=function(_24,_25){ |
||
| 95 | var _26=null; |
||
| 96 | if(_24.query){
|
||
| 97 | _26=[]; |
||
| 98 | var _27=_24.queryOptions?_24.queryOptions.ignoreCase:false; |
||
| 99 | var _28={};
|
||
| 100 | for(var key in _24.query){ |
||
| 101 | var _29=_24.query[key];
|
||
| 102 | if(typeof _29==="string"){ |
||
| 103 | _28[key]=dojo.data.util.filter.patternToRegExp(_29,_27); |
||
| 104 | } |
||
| 105 | } |
||
| 106 | for(var i=0;i<_25.length;++i){ |
||
| 107 | var _2a=true; |
||
| 108 | var _2b=_25[i];
|
||
| 109 | for(var key in _24.query){ |
||
| 110 | var _29=_24.query[key];
|
||
| 111 | if(!_22._containsValue(_2b,key,_29,_28[key])){
|
||
| 112 | _2a=false;
|
||
| 113 | } |
||
| 114 | } |
||
| 115 | if(_2a){
|
||
| 116 | _26.push(_2b); |
||
| 117 | } |
||
| 118 | } |
||
| 119 | }else{
|
||
| 120 | if(_24.identity){
|
||
| 121 | _26=[]; |
||
| 122 | var _2c;
|
||
| 123 | for(var key in _25){ |
||
| 124 | _2c=_25[key]; |
||
| 125 | if(_2c[_22._keyAttribute]==_24.identity){
|
||
| 126 | _26.push(_2c); |
||
| 127 | break;
|
||
| 128 | } |
||
| 129 | } |
||
| 130 | }else{
|
||
| 131 | if(_25.length>0){ |
||
| 132 | _26=_25.slice(0,_25.length);
|
||
| 133 | } |
||
| 134 | } |
||
| 135 | } |
||
| 136 | _20(_26,_24); |
||
| 137 | }; |
||
| 138 | if(this._loadFinished){ |
||
| 139 | _23(_1f,this._arrayOfAllItems);
|
||
| 140 | }else{
|
||
| 141 | if(this.url!==""){ |
||
| 142 | if(this._loadInProgress){ |
||
| 143 | this._queuedFetches.push({args:_1f,filter:_23}); |
||
| 144 | }else{
|
||
| 145 | this._loadInProgress=true; |
||
| 146 | var _2d={url:_22.url,handleAs:"json-comment-filtered",preventCache:this.urlPreventCache}; |
||
| 147 | var _2e=dojo.xhrGet(_2d);
|
||
| 148 | _2e.addCallback(function(_2f){
|
||
| 149 | _22._processData(_2f); |
||
| 150 | _23(_1f,_22._arrayOfAllItems); |
||
| 151 | _22._handleQueuedFetches(); |
||
| 152 | }); |
||
| 153 | _2e.addErrback(function(_30){
|
||
| 154 | _22._loadInProgress=false;
|
||
| 155 | throw _30;
|
||
| 156 | }); |
||
| 157 | } |
||
| 158 | }else{
|
||
| 159 | if(this._keyValueString){ |
||
| 160 | this._processData(eval(this._keyValueString)); |
||
| 161 | this._keyValueString=null; |
||
| 162 | _23(_1f,this._arrayOfAllItems);
|
||
| 163 | }else{
|
||
| 164 | if(this._keyValueVar){ |
||
| 165 | this._processData(this._keyValueVar); |
||
| 166 | this._keyValueVar=null; |
||
| 167 | _23(_1f,this._arrayOfAllItems);
|
||
| 168 | }else{
|
||
| 169 | throw new Error("dojox.data.KeyValueStore: No source data was provided as either URL, String, or Javascript variable data input."); |
||
| 170 | } |
||
| 171 | } |
||
| 172 | } |
||
| 173 | } |
||
| 174 | },_handleQueuedFetches:function(){ |
||
| 175 | if(this._queuedFetches.length>0){ |
||
| 176 | for(var i=0;i<this._queuedFetches.length;i++){ |
||
| 177 | var _31=this._queuedFetches[i]; |
||
| 178 | var _32=_31.filter;
|
||
| 179 | var _33=_31.args;
|
||
| 180 | if(_32){
|
||
| 181 | _32(_33,this._arrayOfAllItems);
|
||
| 182 | }else{
|
||
| 183 | this.fetchItemByIdentity(_31.args);
|
||
| 184 | } |
||
| 185 | } |
||
| 186 | this._queuedFetches=[];
|
||
| 187 | } |
||
| 188 | },_processData:function(_34){ |
||
| 189 | this._arrayOfAllItems=[];
|
||
| 190 | for(var i=0;i<_34.length;i++){ |
||
| 191 | this._arrayOfAllItems.push(this._createItem(_34[i])); |
||
| 192 | } |
||
| 193 | this._loadFinished=true; |
||
| 194 | this._loadInProgress=false; |
||
| 195 | },_createItem:function(_35){ |
||
| 196 | var _36={};
|
||
| 197 | _36[this._storeProp]=this; |
||
| 198 | for(var i in _35){ |
||
| 199 | _36[this._keyAttribute]=i;
|
||
| 200 | _36[this._valueAttribute]=_35[i];
|
||
| 201 | break;
|
||
| 202 | } |
||
| 203 | return _36;
|
||
| 204 | },getIdentity:function(_37){ |
||
| 205 | if(this.isItem(_37)){ |
||
| 206 | return _37[this._keyAttribute]; |
||
| 207 | } |
||
| 208 | return null; |
||
| 209 | },getIdentityAttributes:function(_38){ |
||
| 210 | return [this._keyAttribute]; |
||
| 211 | },fetchItemByIdentity:function(_39){ |
||
| 212 | _39.oldOnItem=_39.onItem; |
||
| 213 | _39.onItem=null;
|
||
| 214 | _39.onComplete=this._finishFetchItemByIdentity;
|
||
| 215 | this.fetch(_39);
|
||
| 216 | },_finishFetchItemByIdentity:function(_3a,_3b){ |
||
| 217 | var _3c=_3b.scope||dojo.global;
|
||
| 218 | if(_3a.length){
|
||
| 219 | _3b.oldOnItem.call(_3c,_3a[0]);
|
||
| 220 | }else{
|
||
| 221 | _3b.oldOnItem.call(_3c,null);
|
||
| 222 | } |
||
| 223 | }}); |
||
| 224 | dojo.extend(dojox.data.KeyValueStore,dojo.data.util.simpleFetch); |
||
| 225 | } |