“ClassCastException : flex.messaging.io.amf.ASObject cannot be cast to ourpackage.OurDTO”

Just type this whenever in flex side:

var dummy:OurDTOFlex = new OurDTOFlex ();

Strange but it works

You should be writing a labelFunction to handle this case. Please find details at this URL http://livedocs.adobe.com/flex/3/langref/mx/controls/listClasses/ListBase.html#labelFunction

Hope this helps.

Please try sharing your Java and AS3 VO classes.

I want to populate the object in a DataGrid, say:
Class Person {
Address address;
String name;
}

The name can be retrieve by using datafield=”name”.

But when I use datafield=”address.street”, the output is empty, please kindly help…

I have got my flex remoting up and running, but I am having a problem with collections. I have data that is more or less in a tree like structure. The class that gets sent from the server to flex has ArrayList’s of other classes.

These lists have data in them when the server method returns, but on the flex side they have length = 0. The classes in the lists are also mapped to actionscript classes. The List fields themselves are mapped in actionscript as ArrayCollection’s.

Other’s have posted similar issues, but I have not seen a comment post that explains a resolution. Any help would be greatly appreciated… this blog post has helped me a lot already! Thanks.

With thanks
Manu

package myPack;

public class MyClass {

    public String a;

    MyClass() {
    }

    public Class MySubClass {
        public String b;

        MySubClass() {
        }

    }

}

And this is the flex class:

package
{

    [RemoteClass(alias="myPack.MyClass$MySubClass")]
    public class MySubClass
    {
        public function MySubClass()
        {
        }

        public var b:String;

    }
}

But I got this error message:
2009-07-03 15:33:26,531 INFO [STDOUT] [Flex] 07/03/2009 15:33:26.531 [ERROR] [Endpoint.AMF] Unable to create a new instance of type ‘myPack.MyClass$MySubClass’.
flex.messaging.MessageException: Unable to create a new instance of type ‘myPack.MyClass$MySubClass’. Types cannot be instantiated without a public, no arguments constructor.
at flex.messaging.util.ClassUtil.createDefaultInstance(ClassUtil.java:143)
at flex.messaging.io.AbstractProxy.createInstance(AbstractProxy.java:86)
at flex.messaging.io.amf.Amf3Input.readScriptObject(Amf3Input.java:409)
[etc]

Suggestion? Thanks in advance

I had seen your blog very recently and very much impressed with ur blogs.I had seen ur code ,communication between flex and java with remoteobject and Blaze.I tried exactly with ur code by copy pasre, but unable to get the output.Currently im using Flex Builder 3.0 with WTP.Can u just help me out in this regard.My mail id is udayshankar.tummala@gmail.com

I am using RemoteObject calls in flex. When I am returning a custom object (which contains two list properties) to the flex i am getting null as the response at flex side.
What could be done to resolve the above problem.
Similer posts i have seen above but i didn’e see any answers for the same.
Can you replay on the same.
Thanks in advance.

For all you people who are having collections of ASObjects on the server side :

I had the same issue. In my case it seemed to be caused by the fact that when I sent it from server to client, I did not actively use the items in the collection. This meant (I think) that the objects in there were never properly transformed to their flex-side counterpart. When being sent back to the server, this caused them to become (or remain?) ASObjects.

When I iterated through the collection on the flex-side, casting them to their flex-side types, all worked fine later on when going back to the server:

for (var i:Number = 0; i < objecta.objectbcollection.length; i++)
var objectb:Objectb = Objectb(objecta.objectbcollection.getItemAt(i));

Interested to see if this works for you.