// SpryJSONDataSet.js - version 0.4 - Spry Pre-Release 1.6
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//
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// Copyright (c) 2007. Adobe Systems Incorporated.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of Adobe Systems Incorporated nor the names of its
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// contributors may be used to endorse or promote products derived from this
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// software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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Spry.Data.JSONDataSet=function(dataSetURL,dataSetOptions)
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{this.path="";this.pathIsObjectOfArrays=false;this.doc=null;this.subPaths=[];this.useParser=false;this.preparseFunc=null;Spry.Data.HTTPSourceDataSet.call(this,dataSetURL,dataSetOptions);var jwType=typeof this.subPaths;if(jwType=="string"||(jwType=="object"&&this.subPaths.constructor!=Array))
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this.subPaths=[this.subPaths];};Spry.Data.JSONDataSet.prototype=new Spry.Data.HTTPSourceDataSet();Spry.Data.JSONDataSet.prototype.constructor=Spry.Data.JSONDataSet;Spry.Data.JSONDataSet.prototype.getDataRefStrings=function()
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{var strArr=[];if(this.url)strArr.push(this.url);if(this.path)strArr.push(this.path);if(this.requestInfo&&this.requestInfo.postData)strArr.push(this.requestInfo.postData);return strArr;};Spry.Data.JSONDataSet.prototype.getDocument=function(){return this.doc;};Spry.Data.JSONDataSet.prototype.getPath=function(){return this.path;};Spry.Data.JSONDataSet.prototype.setPath=function(path)
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{if(this.path!=path)
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{this.path=path;if(this.dataWasLoaded&&this.doc)
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{this.notifyObservers("onPreLoad");this.setDataFromDoc(this.doc);}}};Spry.Data.JSONDataSet.getMatchingObjects=function(path,jsonObj)
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{var results=[];if(path&&jsonObj)
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{var prop="";var leftOverPath="";var offset=path.search(/\./);if(offset!=-1)
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{prop=path.substring(0,offset);leftOverPath=path.substring(offset+1);}
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else
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prop=path;var matches=[];if(prop&&typeof jsonObj=="object")
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{var obj=jsonObj[prop];var objType=typeof obj;if(objType!=undefined&&objType!=null)
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{if(obj&&objType=="object"&&obj.constructor==Array)
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matches=matches.concat(obj);else
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matches.push(obj);}}
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var numMatches=matches.length;if(leftOverPath)
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{for(var i=0;i<numMatches;i++)
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results=results.concat(Spry.Data.JSONDataSet.getMatchingObjects(leftOverPath,matches[i]));}
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else
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results=matches;}
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return results;};Spry.Data.JSONDataSet.flattenObject=function(obj,basicColumnName)
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{var basicName=basicColumnName?basicColumnName:"column0";var row=new Object;var objType=typeof obj;if(objType=="object")
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Spry.Data.JSONDataSet.copyProps(row,obj);else
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row[basicName]=obj;row.ds_JSONObject=obj;return row;};Spry.Data.JSONDataSet.copyProps=function(dstObj,srcObj,suppressObjProps)
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{if(srcObj&&dstObj)
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{for(var prop in srcObj)
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{if(suppressObjProps&&typeof srcObj[prop]=="object")
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continue;dstObj[prop]=srcObj[prop];}}
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return dstObj;};Spry.Data.JSONDataSet.flattenDataIntoRecordSet=function(jsonObj,path,pathIsObjectOfArrays)
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{var rs=new Object;rs.data=[];rs.dataHash={};if(!path)
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path="";var obj=jsonObj;var objType=typeof obj;var basicColName="";if(objType!="object"||!obj)
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{if(obj!=null)
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{var row=new Object;row.column0=obj;row.ds_RowID=0;rs.data.push(row);rs.dataHash[row.ds_RowID]=row;}
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return rs;}
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var matches=[];if(obj.constructor==Array)
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{var arrLen=obj.length;if(arrLen<1)
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return rs;var eleType=typeof obj[0];if(eleType!="object")
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{for(var i=0;i<arrLen;i++)
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{var row=new Object;row.column0=obj[i];row.ds_RowID=i;rs.data.push(row);rs.dataHash[row.ds_RowID]=row;}
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return rs;}
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if(obj[0].constructor==Array)
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return rs;if(path)
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{for(var i=0;i<arrLen;i++)
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matches=matches.concat(Spry.Data.JSONDataSet.getMatchingObjects(path,obj[i]));}
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else
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{for(var i=0;i<arrLen;i++)
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matches.push(obj[i]);}}
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else
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{if(path)
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matches=Spry.Data.JSONDataSet.getMatchingObjects(path,obj);else
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matches.push(obj);}
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var numMatches=matches.length;if(path&&numMatches>=1&&typeof matches[0]!="object")
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basicColName=path.replace(/.*\./,"");if(!pathIsObjectOfArrays)
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{for(var i=0;i<numMatches;i++)
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{var row=Spry.Data.JSONDataSet.flattenObject(matches[i],basicColName,pathIsObjectOfArrays);row.ds_RowID=i;rs.dataHash[i]=row;rs.data.push(row);}}
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else
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{var rowID=0;for(var i=0;i<numMatches;i++)
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{var obj=matches[i];var colNames=[];var maxNumRows=0;for(var propName in obj)
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{var prop=obj[propName];var propyType=typeof prop;if(propyType=='object'&&prop.constructor==Array)
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{colNames.push(propName);maxNumRows=Math.max(maxNumRows,obj[propName].length);}}
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var numColNames=colNames.length;for(var j=0;j<maxNumRows;j++)
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{var row=new Object;for(var k=0;k<numColNames;k++)
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{var colName=colNames[k];row[colName]=obj[colName][j];}
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row.ds_RowID=rowID++;rs.dataHash[i]=row;rs.data.push(row);}}}
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return rs;};Spry.Data.JSONDataSet.prototype.flattenSubPaths=function(rs,subPaths)
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{if(!rs||!subPaths)
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return;var numSubPaths=subPaths.length;if(numSubPaths<1)
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return;var data=rs.data;var dataHash={};var pathArray=[];var cleanedPathArray=[];var isObjectOfArraysArr=[];for(var i=0;i<numSubPaths;i++)
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{var subPath=subPaths[i];if(typeof subPath=="object")
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{isObjectOfArraysArr[i]=subPath.pathIsObjectOfArrays;subPath=subPath.path;}
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if(!subPath)
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subPath="";pathArray[i]=Spry.Data.Region.processDataRefString(null,subPath,this.dataSetsForDataRefStrings);cleanedPathArray[i]=pathArray[i].replace(/\[.*\]/g,"");}
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var row;var numRows=data.length;var newData=[];for(var i=0;i<numRows;i++)
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{row=data[i];var newRows=[row];for(var j=0;j<numSubPaths;j++)
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{var newRS=Spry.Data.JSONDataSet.flattenDataIntoRecordSet(row.ds_JSONObject,pathArray[j],isObjectOfArraysArr[j]);if(newRS&&newRS.data&&newRS.data.length)
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{if(typeof subPaths[j]=="object"&&subPaths[j].subPaths)
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{var sp=subPaths[j].subPaths;spType=typeof sp;if(spType=="string")
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sp=[sp];else if(spType=="object"&&spType.constructor==Object)
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sp=[sp];this.flattenSubPaths(newRS,sp);}
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var newRSData=newRS.data;var numRSRows=newRSData.length;var cleanedPath=cleanedPathArray[j]+".";var numNewRows=newRows.length;var joinedRows=[];for(var k=0;k<numNewRows;k++)
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{var newRow=newRows[k];for(var l=0;l<numRSRows;l++)
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{var newRowObj=new Object;var newRSRow=newRSData[l];for(var prop in newRSRow)
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{var newPropName=cleanedPath+prop;if(cleanedPath==prop||cleanedPath.search(new RegExp("\\."+prop+"\\.$"))!=-1)
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newPropName=cleanedPathArray[j];newRowObj[newPropName]=newRSRow[prop];}
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Spry.Data.JSONDataSet.copyProps(newRowObj,newRow);joinedRows.push(newRowObj);}}
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newRows=joinedRows;}}
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newData=newData.concat(newRows);}
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data=newData;numRows=data.length;for(i=0;i<numRows;i++)
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{row=data[i];row.ds_RowID=i;dataHash[row.ds_RowID]=row;}
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rs.data=data;rs.dataHash=dataHash;};Spry.Data.JSONDataSet.prototype.parseJSON=function(str,filter)
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{try
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{if(/^("(\\.|[^"\\\n\r])*?"|[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t])+?$/.test(str))
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{var j=eval('('+str+')');if(typeof filter==='function')
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{function walk(k,v)
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{if(v&&typeof v==='object')
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{for(var i in v)
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{if(v.hasOwnProperty(i))
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{v[i]=walk(i,v[i]);}}}
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return filter(k,v);}
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j=walk('',j);}
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return j;}}catch(e){}
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throw new Error("Failed to parse JSON string.");};Spry.Data.JSONDataSet.prototype.loadDataIntoDataSet=function(rawDataDoc)
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{if(this.preparseFunc)
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rawDataDoc=this.preparseFunc(this,rawDataDoc);var jsonObj;try{jsonObj=this.useParser?this.parseJSON(rawDataDoc):eval("("+rawDataDoc+")");}
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catch(e)
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{Spry.Debug.reportError("Caught exception in JSONDataSet.loadDataIntoDataSet: "+e);jsonObj={};}
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if(jsonObj==null)
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jsonObj="null";var rs=Spry.Data.JSONDataSet.flattenDataIntoRecordSet(jsonObj,Spry.Data.Region.processDataRefString(null,this.path,this.dataSetsForDataRefStrings),this.pathIsObjectOfArrays);this.flattenSubPaths(rs,this.subPaths);this.doc=rawDataDoc;this.docObj=jsonObj;this.data=rs.data;this.dataHash=rs.dataHash;this.dataWasLoaded=(this.doc!=null);};
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