// 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();};