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Adobe Summit 2023 [19th to 23rd March, Las Vegas and Virtual] | Complete AEM Session & Lab list

Messaging w/ Complex Data Types


Level 1
Hey everyone,

I'm having issues trying to pass complex data type objects I
created using the BlazeDS messaging service.

To be more exact, I have an AC3 class "Cargo" that I wrote
that contains only five public properties of type 'String':
contents, length, width, height, and weight. The application I
wrote allows the user to enter these properties using text input
components, and then publishes the Cargo object through the
Producer.send() function.

Below is the pertinent code:

private function sendMessage():void {

var message:AsyncMessage = new AsyncMessage();

messageObj.contents = ti_contents.text; //messageObj is of
type 'Cargo'

messageObj.length = ti_length.text; //ti stands for
TextInput, as I am grabbing the user's input.

messageObj.width = ti_width.text;

messageObj.height = ti_height.text;

messageObj.weight = ti_weight.text;

message.body = messageObj;

producer.send( message );


private function messageHandler( event:MessageEvent ):void {

messageObj = Cargo( event.message.body ); //TYPE COERCION


The sending and receiving work fine, I'm having no issues
getting the messaging service to work. However, when I cast the
'event.message.body' as type 'Cargo' I get a type coercion error.

I cannot find help with this anywhere as all the examples use
Strings or other primitive types.

Any suggestions on how to get this to work?
2 Replies


Not applicable

I have never done it like that, but using Blaze-DS and remove
objects you can try this?

private function messageHandler( event:MessageEvent ):void {

Cargo = vent.message.body as Cargo;




Level 1
thanks for the reply reis, but because there is a type
coercion error between the event.message.body of type Object and my
messageObj of type Cargo, if I try the "as" operator it just
returns null.

Any other ideas?