root / trunk / web / dojo / dojox / data / CsvStore.js @ 12
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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.CsvStore"]){ |
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| 9 | dojo._hasResource["dojox.data.CsvStore"]=true; |
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| 10 | dojo.provide("dojox.data.CsvStore");
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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.CsvStore",null,{constructor:function(_1){ |
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| 14 | this._attributes=[];
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| 15 | this._attributeIndexes={};
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| 16 | this._dataArray=[];
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| 17 | this._arrayOfAllItems=[];
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| 18 | this._loadFinished=false; |
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| 19 | if(_1.url){
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| 20 | this.url=_1.url;
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| 21 | } |
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| 22 | this._csvData=_1.data;
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| 23 | if(_1.label){
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| 24 | this.label=_1.label;
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| 25 | }else{
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| 26 | if(this.label===""){ |
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| 27 | this.label=undefined; |
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| 28 | } |
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| 29 | } |
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| 30 | this._storeProp="_csvStore"; |
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| 31 | this._idProp="_csvId"; |
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| 32 | this._features={"dojo.data.api.Read":true,"dojo.data.api.Identity":true}; |
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| 33 | this._loadInProgress=false; |
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| 34 | this._queuedFetches=[];
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| 35 | this.identifier=_1.identifier;
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| 36 | if(this.identifier===""){ |
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| 37 | delete this.identifier; |
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| 38 | }else{
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| 39 | this._idMap={};
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| 40 | } |
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| 41 | if("separator" in _1){ |
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| 42 | this.separator=_1.separator;
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| 43 | } |
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| 44 | if("urlPreventCache" in _1){ |
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| 45 | this.urlPreventCache=_1.urlPreventCache?true:false; |
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| 46 | } |
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| 47 | },url:"",label:"",identifier:"",separator:",",urlPreventCache:false,_assertIsItem:function(_2){ |
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| 48 | if(!this.isItem(_2)){ |
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| 49 | throw new Error(this.declaredClass+": a function was passed an item argument that was not an item"); |
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| 50 | } |
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| 51 | },_getIndex:function(_3){ |
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| 52 | var _4=this.getIdentity(_3); |
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| 53 | if(this.identifier){ |
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| 54 | _4=this._idMap[_4];
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| 55 | } |
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| 56 | return _4;
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| 57 | },getValue:function(_5,_6,_7){ |
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| 58 | this._assertIsItem(_5);
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| 59 | var _8=_7;
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| 60 | if(typeof _6==="string"){ |
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| 61 | var ai=this._attributeIndexes[_6]; |
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| 62 | if(ai!=null){ |
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| 63 | var _9=this._dataArray[this._getIndex(_5)]; |
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| 64 | _8=_9[ai]||_7; |
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| 65 | } |
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| 66 | }else{
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| 67 | throw new Error(this.declaredClass+": a function was passed an attribute argument that was not a string"); |
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| 68 | } |
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| 69 | return _8;
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| 70 | },getValues:function(_a,_b){ |
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| 71 | var _c=this.getValue(_a,_b); |
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| 72 | return (_c?[_c]:[]);
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| 73 | },getAttributes:function(_d){ |
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| 74 | this._assertIsItem(_d);
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| 75 | var _e=[];
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| 76 | var _f=this._dataArray[this._getIndex(_d)]; |
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| 77 | for(var i=0;i<_f.length;i++){ |
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| 78 | if(_f[i]!==""){ |
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| 79 | _e.push(this._attributes[i]);
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| 80 | } |
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| 81 | } |
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| 82 | return _e;
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| 83 | },hasAttribute:function(_10,_11){ |
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| 84 | this._assertIsItem(_10);
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| 85 | if(typeof _11==="string"){ |
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| 86 | var _12=this._attributeIndexes[_11]; |
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| 87 | var _13=this._dataArray[this._getIndex(_10)]; |
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| 88 | return (typeof _12!=="undefined"&&_12<_13.length&&_13[_12]!==""); |
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| 89 | }else{
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| 90 | throw new Error(this.declaredClass+": a function was passed an attribute argument that was not a string"); |
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| 91 | } |
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| 92 | },containsValue:function(_14,_15,_16){ |
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| 93 | var _17=undefined; |
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| 94 | if(typeof _16==="string"){ |
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| 95 | _17=dojo.data.util.filter.patternToRegExp(_16,false);
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| 96 | } |
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| 97 | return this._containsValue(_14,_15,_16,_17); |
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| 98 | },_containsValue:function(_18,_19,_1a,_1b){ |
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| 99 | var _1c=this.getValues(_18,_19); |
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| 100 | for(var i=0;i<_1c.length;++i){ |
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| 101 | var _1d=_1c[i];
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| 102 | if(typeof _1d==="string"&&_1b){ |
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| 103 | return (_1d.match(_1b)!==null); |
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| 104 | }else{
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| 105 | if(_1a===_1d){
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| 106 | return true; |
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| 107 | } |
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| 108 | } |
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| 109 | } |
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| 110 | return false; |
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| 111 | },isItem:function(_1e){ |
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| 112 | if(_1e&&_1e[this._storeProp]===this){ |
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| 113 | var _1f=_1e[this._idProp]; |
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| 114 | if(this.identifier){ |
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| 115 | var _20=this._dataArray[this._idMap[_1f]]; |
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| 116 | if(_20){
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| 117 | return true; |
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| 118 | } |
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| 119 | }else{
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| 120 | if(_1f>=0&&_1f<this._dataArray.length){ |
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| 121 | return true; |
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| 122 | } |
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| 123 | } |
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| 124 | } |
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| 125 | return false; |
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| 126 | },isItemLoaded:function(_21){ |
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| 127 | return this.isItem(_21); |
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| 128 | },loadItem:function(_22){ |
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| 129 | },getFeatures:function(){ |
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| 130 | return this._features; |
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| 131 | },getLabel:function(_23){ |
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| 132 | if(this.label&&this.isItem(_23)){ |
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| 133 | return this.getValue(_23,this.label); |
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| 134 | } |
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| 135 | return undefined; |
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| 136 | },getLabelAttributes:function(_24){ |
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| 137 | if(this.label){ |
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| 138 | return [this.label]; |
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| 139 | } |
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| 140 | return null; |
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| 141 | },_fetchItems:function(_25,_26,_27){ |
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| 142 | var _28=this; |
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| 143 | var _29=function(_2a,_2b){ |
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| 144 | var _2c=null; |
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| 145 | if(_2a.query){
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| 146 | var key,_2d;
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| 147 | _2c=[]; |
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| 148 | var _2e=_2a.queryOptions?_2a.queryOptions.ignoreCase:false; |
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| 149 | var _2f={};
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| 150 | for(key in _2a.query){ |
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| 151 | _2d=_2a.query[key]; |
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| 152 | if(typeof _2d==="string"){ |
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| 153 | _2f[key]=dojo.data.util.filter.patternToRegExp(_2d,_2e); |
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| 154 | } |
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| 155 | } |
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| 156 | for(var i=0;i<_2b.length;++i){ |
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| 157 | var _30=true; |
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| 158 | var _31=_2b[i];
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| 159 | for(key in _2a.query){ |
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| 160 | _2d=_2a.query[key]; |
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| 161 | if(!_28._containsValue(_31,key,_2d,_2f[key])){
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| 162 | _30=false;
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| 163 | } |
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| 164 | } |
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| 165 | if(_30){
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| 166 | _2c.push(_31); |
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| 167 | } |
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| 168 | } |
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| 169 | }else{
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| 170 | _2c=_2b.slice(0,_2b.length);
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| 171 | } |
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| 172 | _26(_2c,_2a); |
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| 173 | }; |
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| 174 | if(this._loadFinished){ |
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| 175 | _29(_25,this._arrayOfAllItems);
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| 176 | }else{
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| 177 | if(this.url!==""){ |
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| 178 | if(this._loadInProgress){ |
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| 179 | this._queuedFetches.push({args:_25,filter:_29}); |
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| 180 | }else{
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| 181 | this._loadInProgress=true; |
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| 182 | var _32={url:_28.url,handleAs:"text",preventCache:_28.urlPreventCache}; |
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| 183 | var _33=dojo.xhrGet(_32);
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| 184 | _33.addCallback(function(_34){
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| 185 | try{
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| 186 | _28._processData(_34); |
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| 187 | _29(_25,_28._arrayOfAllItems); |
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| 188 | _28._handleQueuedFetches(); |
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| 189 | } |
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| 190 | catch(e){
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| 191 | _27(e,_25); |
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| 192 | } |
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| 193 | }); |
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| 194 | _33.addErrback(function(_35){
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| 195 | _28._loadInProgress=false;
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| 196 | if(_27){
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| 197 | _27(_35,_25); |
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| 198 | }else{
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| 199 | throw _35;
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| 200 | } |
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| 201 | }); |
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| 202 | var _36=null; |
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| 203 | if(_25.abort){
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| 204 | _36=_25.abort; |
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| 205 | } |
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| 206 | _25.abort=function(){ |
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| 207 | var df=_33;
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| 208 | if(df&&df.fired===-1){ |
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| 209 | df.cancel(); |
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| 210 | df=null;
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| 211 | } |
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| 212 | if(_36){
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| 213 | _36.call(_25); |
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| 214 | } |
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| 215 | }; |
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| 216 | } |
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| 217 | }else{
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| 218 | if(this._csvData){ |
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| 219 | try{
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| 220 | this._processData(this._csvData); |
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| 221 | this._csvData=null; |
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| 222 | _29(_25,this._arrayOfAllItems);
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| 223 | } |
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| 224 | catch(e){
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| 225 | _27(e,_25); |
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| 226 | } |
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| 227 | }else{
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| 228 | var _37=new Error(this.declaredClass+": No CSV source data was provided as either URL or String data input."); |
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| 229 | if(_27){
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| 230 | _27(_37,_25); |
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| 231 | }else{
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| 232 | throw _37;
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| 233 | } |
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| 234 | } |
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| 235 | } |
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| 236 | } |
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| 237 | },close:function(_38){ |
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| 238 | },_getArrayOfArraysFromCsvFileContents:function(_39){ |
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| 239 | if(dojo.isString(_39)){
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| 240 | var _3a=new RegExp("^\\s+","g"); |
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| 241 | var _3b=new RegExp("\\s+$","g"); |
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| 242 | var _3c=new RegExp("\"\"","g"); |
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| 243 | var _3d=[];
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| 244 | var i;
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| 245 | var _3e=this._splitLines(_39); |
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| 246 | for(i=0;i<_3e.length;++i){ |
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| 247 | var _3f=_3e[i];
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| 248 | if(_3f.length>0){ |
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| 249 | var _40=_3f.split(this.separator); |
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| 250 | var j=0; |
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| 251 | while(j<_40.length){
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| 252 | var _41=_40[j];
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| 253 | var _42=_41.replace(_3a,""); |
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| 254 | var _43=_42.replace(_3b,""); |
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| 255 | var _44=_43.charAt(0); |
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| 256 | var _45=_43.charAt(_43.length-1); |
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| 257 | var _46=_43.charAt(_43.length-2); |
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| 258 | var _47=_43.charAt(_43.length-3); |
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| 259 | if(_43.length===2&&_43=="\"\""){ |
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| 260 | _40[j]="";
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| 261 | }else{
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| 262 | if((_44=="\"")&&((_45!="\"")||((_45=="\"")&&(_46=="\"")&&(_47!="\"")))){ |
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| 263 | if(j+1===_40.length){ |
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| 264 | return;
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| 265 | } |
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| 266 | var _48=_40[j+1]; |
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| 267 | _40[j]=_42+this.separator+_48;
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| 268 | _40.splice(j+1,1); |
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| 269 | }else{
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| 270 | if((_44=="\"")&&(_45=="\"")){ |
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| 271 | _43=_43.slice(1,(_43.length-1)); |
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| 272 | _43=_43.replace(_3c,"\"");
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| 273 | } |
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| 274 | _40[j]=_43; |
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| 275 | j+=1;
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| 276 | } |
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| 277 | } |
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| 278 | } |
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| 279 | _3d.push(_40); |
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| 280 | } |
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| 281 | } |
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| 282 | this._attributes=_3d.shift();
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| 283 | for(i=0;i<this._attributes.length;i++){ |
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| 284 | this._attributeIndexes[this._attributes[i]]=i; |
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| 285 | } |
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| 286 | this._dataArray=_3d;
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| 287 | } |
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| 288 | },_splitLines:function(_49){ |
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| 289 | var _4a=[];
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| 290 | var i;
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| 291 | var _4b=""; |
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| 292 | var _4c=false; |
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| 293 | for(i=0;i<_49.length;i++){ |
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| 294 | var c=_49.charAt(i);
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| 295 | switch(c){
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| 296 | case "\"": |
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| 297 | _4c=!_4c; |
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| 298 | _4b+=c; |
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| 299 | break;
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| 300 | case "\r": |
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| 301 | if(_4c){
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| 302 | _4b+=c; |
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| 303 | }else{
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| 304 | _4a.push(_4b); |
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| 305 | _4b="";
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| 306 | if(i<(_49.length-1)&&_49.charAt(i+1)=="\n"){ |
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| 307 | i++; |
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| 308 | } |
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| 309 | } |
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| 310 | break;
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| 311 | case "\n": |
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| 312 | if(_4c){
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| 313 | _4b+=c; |
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| 314 | }else{
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| 315 | _4a.push(_4b); |
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| 316 | _4b="";
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| 317 | } |
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| 318 | break;
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| 319 | default:
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| 320 | _4b+=c; |
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| 321 | } |
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| 322 | } |
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| 323 | if(_4b!==""){ |
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| 324 | _4a.push(_4b); |
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| 325 | } |
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| 326 | return _4a;
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| 327 | },_processData:function(_4d){ |
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| 328 | this._getArrayOfArraysFromCsvFileContents(_4d);
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| 329 | this._arrayOfAllItems=[];
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| 330 | if(this.identifier){ |
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| 331 | if(this._attributeIndexes[this.identifier]===undefined){ |
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| 332 | throw new Error(this.declaredClass+": Identity specified is not a column header in the data set."); |
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| 333 | } |
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| 334 | } |
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| 335 | for(var i=0;i<this._dataArray.length;i++){ |
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| 336 | var id=i;
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| 337 | if(this.identifier){ |
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| 338 | var _4e=this._dataArray[i]; |
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| 339 | id=_4e[this._attributeIndexes[this.identifier]]; |
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| 340 | this._idMap[id]=i;
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| 341 | } |
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| 342 | this._arrayOfAllItems.push(this._createItemFromIdentity(id)); |
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| 343 | } |
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| 344 | this._loadFinished=true; |
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| 345 | this._loadInProgress=false; |
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| 346 | },_createItemFromIdentity:function(_4f){ |
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| 347 | var _50={};
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| 348 | _50[this._storeProp]=this; |
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| 349 | _50[this._idProp]=_4f;
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| 350 | return _50;
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| 351 | },getIdentity:function(_51){ |
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| 352 | if(this.isItem(_51)){ |
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| 353 | return _51[this._idProp]; |
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| 354 | } |
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| 355 | return null; |
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| 356 | },fetchItemByIdentity:function(_52){ |
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| 357 | var _53;
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| 358 | var _54=_52.scope?_52.scope:dojo.global;
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| 359 | if(!this._loadFinished){ |
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| 360 | var _55=this; |
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| 361 | if(this.url!==""){ |
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| 362 | if(this._loadInProgress){ |
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| 363 | this._queuedFetches.push({args:_52}); |
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| 364 | }else{
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| 365 | this._loadInProgress=true; |
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| 366 | var _56={url:_55.url,handleAs:"text"}; |
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| 367 | var _57=dojo.xhrGet(_56);
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| 368 | _57.addCallback(function(_58){
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| 369 | try{
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| 370 | _55._processData(_58); |
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| 371 | var _59=_55._createItemFromIdentity(_52.identity);
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| 372 | if(!_55.isItem(_59)){
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| 373 | _59=null;
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| 374 | } |
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| 375 | if(_52.onItem){
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| 376 | _52.onItem.call(_54,_59); |
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| 377 | } |
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| 378 | _55._handleQueuedFetches(); |
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| 379 | } |
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| 380 | catch(error){
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| 381 | if(_52.onError){
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| 382 | _52.onError.call(_54,error); |
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| 383 | } |
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| 384 | } |
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| 385 | }); |
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| 386 | _57.addErrback(function(_5a){
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| 387 | this._loadInProgress=false; |
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| 388 | if(_52.onError){
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| 389 | _52.onError.call(_54,_5a); |
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| 390 | } |
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| 391 | }); |
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| 392 | } |
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| 393 | }else{
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| 394 | if(this._csvData){ |
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| 395 | try{
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| 396 | _55._processData(_55._csvData); |
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| 397 | _55._csvData=null;
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| 398 | _53=_55._createItemFromIdentity(_52.identity); |
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| 399 | if(!_55.isItem(_53)){
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| 400 | _53=null;
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| 401 | } |
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| 402 | if(_52.onItem){
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| 403 | _52.onItem.call(_54,_53); |
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| 404 | } |
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| 405 | } |
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| 406 | catch(e){
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| 407 | if(_52.onError){
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| 408 | _52.onError.call(_54,e); |
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| 409 | } |
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| 410 | } |
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| 411 | } |
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| 412 | } |
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| 413 | }else{
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| 414 | _53=this._createItemFromIdentity(_52.identity);
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| 415 | if(!this.isItem(_53)){ |
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| 416 | _53=null;
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| 417 | } |
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| 418 | if(_52.onItem){
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| 419 | _52.onItem.call(_54,_53); |
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| 420 | } |
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| 421 | } |
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| 422 | },getIdentityAttributes:function(_5b){ |
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| 423 | if(this.identifier){ |
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| 424 | return [this.identifier]; |
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| 425 | }else{
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| 426 | return null; |
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| 427 | } |
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| 428 | },_handleQueuedFetches:function(){ |
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| 429 | if(this._queuedFetches.length>0){ |
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| 430 | for(var i=0;i<this._queuedFetches.length;i++){ |
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| 431 | var _5c=this._queuedFetches[i]; |
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| 432 | var _5d=_5c.filter;
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| 433 | var _5e=_5c.args;
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| 434 | if(_5d){
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| 435 | _5d(_5e,this._arrayOfAllItems);
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| 436 | }else{
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| 437 | this.fetchItemByIdentity(_5c.args);
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| 438 | } |
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| 439 | } |
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| 440 | this._queuedFetches=[];
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| 441 | } |
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| 442 | }}); |
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| 443 | dojo.extend(dojox.data.CsvStore,dojo.data.util.simpleFetch); |
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| 444 | } |