root / trunk / web / dojo / dojox / data / SnapLogicStore.js @ 12
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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.SnapLogicStore"]){ |
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dojo._hasResource["dojox.data.SnapLogicStore"]=true; |
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dojo.provide("dojox.data.SnapLogicStore");
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dojo.require("dojo.io.script");
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dojo.require("dojo.data.util.sorter");
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dojo.declare("dojox.data.SnapLogicStore",null,{Parts:{DATA:"data",COUNT:"count"},url:"",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._parameters=_1.parameters;
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},_assertIsItem:function(_2){ |
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if(!this.isItem(_2)){ |
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throw new Error("dojox.data.SnapLogicStore: a function was passed an item argument that was not an item"); |
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} |
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},_assertIsAttribute:function(_3){ |
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if(typeof _3!=="string"){ |
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throw new Error("dojox.data.SnapLogicStore: a function was passed an attribute argument that was not an attribute name string"); |
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} |
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},getFeatures:function(){ |
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return {"dojo.data.api.Read":true}; |
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},getValue:function(_4,_5,_6){ |
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this._assertIsItem(_4);
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this._assertIsAttribute(_5);
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var i=dojo.indexOf(_4.attributes,_5);
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if(i!==-1){ |
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return _4.values[i];
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} |
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return _6;
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},getAttributes:function(_7){ |
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this._assertIsItem(_7);
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return _7.attributes;
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},hasAttribute:function(_8,_9){ |
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this._assertIsItem(_8);
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this._assertIsAttribute(_9);
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for(var i=0;i<_8.attributes.length;++i){ |
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if(_9==_8.attributes[i]){
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return true; |
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} |
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} |
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return false; |
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},isItemLoaded:function(_a){ |
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return this.isItem(_a); |
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},loadItem:function(_b){ |
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},getLabel:function(_c){ |
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return undefined; |
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},getLabelAttributes:function(_d){ |
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return null; |
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},containsValue:function(_e,_f,_10){ |
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return this.getValue(_e,_f)===_10; |
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},getValues:function(_11,_12){ |
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this._assertIsItem(_11);
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this._assertIsAttribute(_12);
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var i=dojo.indexOf(_11.attributes,_12);
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if(i!==-1){ |
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return [_11.values[i]];
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} |
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return [];
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},isItem:function(_13){ |
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if(_13&&_13._store===this){ |
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return true; |
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} |
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return false; |
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},close:function(_14){ |
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},_fetchHandler:function(_15){ |
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var _16=_15.scope||dojo.global;
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if(_15.onBegin){
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_15.onBegin.call(_16,_15._countResponse[0],_15);
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} |
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if(_15.onItem||_15.onComplete){
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var _17=_15._dataResponse;
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if(!_17.length){
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_15.onError.call(_16,new Error("dojox.data.SnapLogicStore: invalid response of length 0"),_15); |
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return;
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}else{
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if(_15.query!="record count"){ |
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var _18=_17.shift();
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var _19=[];
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for(var i=0;i<_17.length;++i){ |
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if(_15._aborted){
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break;
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} |
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_19.push({attributes:_18,values:_17[i],_store:this}); |
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} |
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if(_15.sort&&!_15._aborted){
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_19.sort(dojo.data.util.sorter.createSortFunction(_15.sort,self)); |
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} |
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}else{
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_19=[({attributes:["count"],values:_17,_store:this})]; |
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} |
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} |
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if(_15.onItem){
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for(var i=0;i<_19.length;++i){ |
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if(_15._aborted){
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break;
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} |
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_15.onItem.call(_16,_19[i],_15); |
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} |
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_19=null;
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} |
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if(_15.onComplete&&!_15._aborted){
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_15.onComplete.call(_16,_19,_15); |
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} |
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} |
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},_partHandler:function(_1a,_1b,_1c){ |
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if(_1c instanceof Error){ |
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if(_1b==this.Parts.DATA){ |
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_1a._dataHandle=null;
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}else{
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_1a._countHandle=null;
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} |
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_1a._aborted=true;
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if(_1a.onError){
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_1a.onError.call(_1a.scope,_1c,_1a); |
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} |
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}else{
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if(_1a._aborted){
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return;
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} |
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if(_1b==this.Parts.DATA){ |
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_1a._dataResponse=_1c; |
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}else{
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_1a._countResponse=_1c; |
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} |
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if((!_1a._dataHandle||_1a._dataResponse!==null)&&(!_1a._countHandle||_1a._countResponse!==null)){ |
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this._fetchHandler(_1a);
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} |
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} |
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},fetch:function(_1d){ |
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_1d._countResponse=null;
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_1d._dataResponse=null;
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_1d._aborted=false;
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_1d.abort=function(){ |
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if(!_1d._aborted){
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_1d._aborted=true;
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if(_1d._dataHandle&&_1d._dataHandle.cancel){
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_1d._dataHandle.cancel(); |
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} |
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if(_1d._countHandle&&_1d._countHandle.cancel){
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_1d._countHandle.cancel(); |
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} |
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} |
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}; |
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if(_1d.onItem||_1d.onComplete){
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var _1e=this._parameters||{}; |
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if(_1d.start){
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if(_1d.start<0){ |
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throw new Error("dojox.data.SnapLogicStore: request start value must be 0 or greater"); |
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} |
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_1e["sn.start"]=_1d.start+1; |
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} |
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if(_1d.count){
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if(_1d.count<0){ |
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throw new Error("dojox.data.SnapLogicStore: request count value 0 or greater"); |
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} |
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_1e["sn.limit"]=_1d.count;
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} |
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_1e["sn.content_type"]="application/javascript"; |
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var _1f=this; |
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var _20=function(_21,_22){ |
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if(_21 instanceof Error){ |
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_1f._fetchHandler(_21,_1d); |
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} |
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}; |
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var _23={url:this.url,content:_1e,timeout:60000,callbackParamName:"sn.stream_header",handle:dojo.hitch(this,"_partHandler",_1d,this.Parts.DATA)}; |
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_1d._dataHandle=dojo.io.script.get(_23); |
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} |
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if(_1d.onBegin){
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var _1e={};
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_1e["sn.count"]="records"; |
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_1e["sn.content_type"]="application/javascript"; |
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var _23={url:this.url,content:_1e,timeout:60000,callbackParamName:"sn.stream_header",handle:dojo.hitch(this,"_partHandler",_1d,this.Parts.COUNT)}; |
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_1d._countHandle=dojo.io.script.get(_23); |
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} |
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return _1d;
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}}); |
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} |