AS3属性复制

package 
{
	import flash.utils.describeType;
	
	/**
	 * ...
	 * @author ongsh
	 */
	public class BeanUtil
	{
		/**
		 * 复制属性，适用于简单的valueObject
		 * 
		 * @param	fromObj 源
		 * @param	toObj	待赋值对象	
		 */
		public static function copyProperties(fromObj:Object,toObj:Object):void
		{
			var xml:XML = describeType(toObj);
			var propertyNames:Array = [];
						
			for each(var variableXML:XML in xml.variable)
			{
				propertyNames.push(variableXML.@name)
			}
			for each(var accessorXML:XML in xml.accessor)
			{
				if(accessorXML.@access=="readwrite" ||  accessorXML.@access == "readonly")
				{
					propertyNames.push(accessorXML.@name)
				}
			}
			
			for each(var prop:String in propertyNames)
			{
				try{
					if(fromObj.hasOwnProperty(prop))
					{
						toObj[prop] = fromObj[prop];
					}
				}catch(e:Error){}
			}
			
		}

	}
}