// SpryJSONDataSet.js - version 0.6 - Spry Pre-Release 1.6.1
//
// Copyright (c) 2007. Adobe Systems Incorporated.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//   * Neither the name of Adobe Systems Incorporated nor the names of its
//     contributors may be used to endorse or promote products derived from this
//     software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
Spry.Data.JSONDataSet=function(dataSetURL,dataSetOptions){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))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(){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){if(this.path!=path){this.path=path;if(this.dataWasLoaded&&this.doc){this.notifyObservers("onPreLoad");this.setDataFromDoc(this.doc)}}};Spry.Data.JSONDataSet.getMatchingObjects=function(path,jsonObj){var results=[];if(path&&jsonObj){var prop="";var leftOverPath="";var offset=path.search(/\./);if(offset!=-1){prop=path.substring(0,offset);leftOverPath=path.substring(offset+1)}else prop=path;var matches=[];if(prop&&typeof jsonObj=="object"){var obj=jsonObj[prop];var objType=typeof obj;if(objType!=undefined&&objType!=null){if(obj&&objType=="object"&&obj.constructor==Array)matches=matches.concat(obj);else matches.push(obj)}}var numMatches=matches.length;if(leftOverPath){for(var i=0;i<numMatches;i++)results=results.concat(Spry.Data.JSONDataSet.getMatchingObjects(leftOverPath,matches[i]))}else results=matches}return results};Spry.Data.JSONDataSet.flattenObject=function(obj,basicColumnName){var basicName=basicColumnName?basicColumnName:"column0";var row=new Object;var objType=typeof obj;if(objType=="object")Spry.Data.JSONDataSet.copyProps(row,obj);else row[basicName]=obj;row.ds_JSONObject=obj;return row};Spry.Data.JSONDataSet.copyProps=function(dstObj,srcObj,suppressObjProps){if(srcObj&&dstObj){for(var prop in srcObj){if(suppressObjProps&&typeof srcObj[prop]=="object")continue;dstObj[prop]=srcObj[prop]}}return dstObj};Spry.Data.JSONDataSet.flattenDataIntoRecordSet=function(jsonObj,path,pathIsObjectOfArrays){var rs=new Object;rs.data=[];rs.dataHash={};if(!path)path="";var obj=jsonObj;var objType=typeof obj;var basicColName="";if(objType!="object"||!obj){if(obj!=null){var row=new Object;row.column0=obj;row.ds_RowID=0;rs.data.push(row);rs.dataHash[row.ds_RowID]=row}return rs}var matches=[];if(obj.constructor==Array){var arrLen=obj.length;if(arrLen<1)return rs;var eleType=typeof obj[0];if(eleType!="object"){for(var i=0;i<arrLen;i++){var row=new Object;row.column0=obj[i];row.ds_RowID=i;rs.data.push(row);rs.dataHash[row.ds_RowID]=row}return rs}if(obj[0].constructor==Array)return rs;if(path){for(var i=0;i<arrLen;i++)matches=matches.concat(Spry.Data.JSONDataSet.getMatchingObjects(path,obj[i]))}else{for(var i=0;i<arrLen;i++)matches.push(obj[i])}}else{if(path)matches=Spry.Data.JSONDataSet.getMatchingObjects(path,obj);else matches.push(obj)}var numMatches=matches.length;if(path&&numMatches>=1&&typeof matches[0]!="object")basicColName=path.replace(/.*\./,"");if(!pathIsObjectOfArrays){for(var i=0;i<numMatches;i++){var row=Spry.Data.JSONDataSet.flattenObject(matches[i],basicColName,pathIsObjectOfArrays);row.ds_RowID=i;rs.dataHash[i]=row;rs.data.push(row)}}else{var rowID=0;for(var i=0;i<numMatches;i++){var obj=matches[i];var colNames=[];var maxNumRows=0;for(var propName in obj){var prop=obj[propName];var propyType=typeof prop;if(propyType=='object'&&prop.constructor==Array){colNames.push(propName);maxNumRows=Math.max(maxNumRows,obj[propName].length)}}var numColNames=colNames.length;for(var j=0;j<maxNumRows;j++){var row=new Object;for(var k=0;k<numColNames;k++){var colName=colNames[k];row[colName]=obj[colName][j]}row.ds_RowID=rowID++;rs.dataHash[row.ds_RowID]=row;rs.data.push(row)}}}return rs};Spry.Data.JSONDataSet.prototype.flattenSubPaths=function(rs,subPaths){if(!rs||!subPaths)return;var numSubPaths=subPaths.length;if(numSubPaths<1)return;var data=rs.data;var dataHash={};var pathArray=[];var cleanedPathArray=[];var isObjectOfArraysArr=[];for(var i=0;i<numSubPaths;i++){var subPath=subPaths[i];if(typeof subPath=="object"){isObjectOfArraysArr[i]=subPath.pathIsObjectOfArrays;subPath=subPath.path}if(!subPath)subPath="";pathArray[i]=Spry.Data.Region.processDataRefString(null,subPath,this.dataSetsForDataRefStrings);cleanedPathArray[i]=pathArray[i].replace(/\[.*\]/g,"")}var row;var numRows=data.length;var newData=[];for(var i=0;i<numRows;i++){row=data[i];var newRows=[row];for(var j=0;j<numSubPaths;j++){var newRS=Spry.Data.JSONDataSet.flattenDataIntoRecordSet(row.ds_JSONObject,pathArray[j],isObjectOfArraysArr[j]);if(newRS&&newRS.data&&newRS.data.length){if(typeof subPaths[j]=="object"&&subPaths[j].subPaths){var sp=subPaths[j].subPaths;spType=typeof sp;if(spType=="string")sp=[sp];else if(spType=="object"&&spType.constructor==Object)sp=[sp];this.flattenSubPaths(newRS,sp)}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++){var newRow=newRows[k];for(var l=0;l<numRSRows;l++){var newRowObj=new Object;var newRSRow=newRSData[l];for(var prop in newRSRow){var newPropName=cleanedPath+prop;if(cleanedPath==prop||cleanedPath.search(new RegExp("\\."+prop+"\\.$"))!=-1)newPropName=cleanedPathArray[j];newRowObj[newPropName]=newRSRow[prop]}Spry.Data.JSONDataSet.copyProps(newRowObj,newRow);joinedRows.push(newRowObj)}}newRows=joinedRows}}newData=newData.concat(newRows)}data=newData;numRows=data.length;for(i=0;i<numRows;i++){row=data[i];row.ds_RowID=i;dataHash[row.ds_RowID]=row}rs.data=data;rs.dataHash=dataHash};Spry.Data.JSONDataSet.prototype.parseJSON=function(str,filter){try{if(/^("(\\.|[^"\\\n\r])*?"|[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t])+?$/.test(str)){var j=eval('('+str+')');if(typeof filter==='function'){function walk(k,v){if(v&&typeof v==='object'){for(var i in v){if(v.hasOwnProperty(i)){v[i]=walk(i,v[i])}}}return filter(k,v)}j=walk('',j)}return j}}catch(e){}throw new Error("Failed to parse JSON string.");};Spry.Data.JSONDataSet.prototype.syncColumnTypesToData=function(){var row=this.getData()[0];for(var colName in row){if(!this.columnTypes[colName]){var type=typeof row[colName];if(type=="number")this.setColumnType(colName,type)}}};Spry.Data.JSONDataSet.prototype.loadDataIntoDataSet=function(rawDataDoc){if(this.preparseFunc)rawDataDoc=this.preparseFunc(this,rawDataDoc);var jsonObj;try{jsonObj=this.useParser?this.parseJSON(rawDataDoc):eval("("+rawDataDoc+")")}catch(e){Spry.Debug.reportError("Caught exception in JSONDataSet.loadDataIntoDataSet: "+e);jsonObj={}}if(jsonObj==null)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);this.syncColumnTypesToData()};