Data grouping

Question

Hi
Is there an easy way to convert variable one into variable two?
var one:ArrayCollection = new ArrayCollection([
  {type:"1", name:"a", value:"test1"},
  {type:"1", name:"b", value:"test2"},
  {type:"2", name:"a", value:"test3"},
  {type:"3", name:"a", value:"test4"}
var two:ArrayCollection = new ArrayCollection([
  {name: "1", children: [
    {name:"a", value:"test1"},
    {name:"b", value:"test2"}
  {name: "2", children: [
    {name:"a", value:"test3"}
  {name: "3", children: [
    {name:"a", value:"test4"}
It's fine if variable two still has the type method in the child records.
Thanks

Answer 1

Hi
Well unless anyone else knows of some functions....  This works
<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="makeNewArray();">
    <mx:Script>
        <![CDATA[
            import mx.collections.ArrayCollection;
            private var groupList:Array;
            private var one:ArrayCollection = new ArrayCollection([
            {type:"1", name:"a", value:"test1"},
            {type:"1", name:"b", value:"test2"},
            {type:"2", name:"a", value:"test3"},
            {type:"3", name:"a", value:"test4"}
            private function createGroupList():void {
                groupList = new Array();
                var alreadyAdded:Boolean;
                groupList.push(one.getItemAt(0).type);
                for (var i:int = 1; i<one.length; i++) {
                    alreadyAdded = false;
                    var type:String = one.getItemAt(i).type;
                    for (var j:int = 0; j<groupList.length; j++) {
                        if (groupList[j] == type) {
                            alreadyAdded = true;
                            break;
                    if (!alreadyAdded) {groupList.push(type)};
            private function makeNewArray():void {
                // Create a unique group list
                createGroupList();
                // Create new arrayCollection
                var two:ArrayCollection = new ArrayCollection();
                // Loop through unique group list
                for (var i:int =0; i<groupList.length; i++) {
                    var type:Object = new Object();
                    type.name = groupList[i];
                    // Loop through the orginial one array
                    var children:Array = new Array();
                    for each (var obj:Object in one) {
                        trace (groupList[i] + ' : ' + obj.type)
                        if (groupList[i].toString() == obj.type.toString()) {
                            var child:Object = new Object();
                            child.name = obj.name;
                            child.value = obj.value;
                            children.push(child);
                    type.children = children;
                    two.addItem(type);
        ]]>
    </mx:Script>
</mx:Application>
Hope it helps
Andrew