<mx:Script>
	<![CDATA[

		import mx.rpc.xml.SimpleXMLEncoder;
		import mx.utils.ObjectUtil;
		import mx.utils.XMLUtil;
		import mx.collections.ArrayCollection;

		private var items:ArrayCollection;

		private function onCreationComplete():void
		{
			var source:Array = [{id:1, name:"One"}, {id:2, name:"Two"}, {id:3, name:"Three"}];
			var collection = new ArrayCollection(source);

			trace(objectToXML(collection.source).toXMLString());
		}

		private function objectToXML(obj:Object):XML
		{
			var qName:QName = new QName("root");
			var xmlDocument:XMLDocument = new XMLDocument();
			var simpleXMLEncoder:SimpleXMLEncoder = new SimpleXMLEncoder(xmlDocument);
			var xmlNode:XMLNode = simpleXMLEncoder.encodeValue(obj, qName, xmlDocument);
			var xml:XML = new XML(xmlDocument.toString());

			return xml;
		}

	]]>
</mx:Script>

<root>
  <item>
    <id>1</id>
    <name>One</name>
  </item>
  <item>
    <id>2</id>
    <name>Two</name>
  </item>
  <item>
    <id>3</id>
    <name>Three</name>
  </item>
</root>