Flow business exceptions back to the client

[Raymond Feng]

Hi,

I notice that we use the message body to flow business exceptions back to 
the client with the following code from TargetInvoker implementations.

public Message invoke(Message msg) throws InvocationRuntimeException {
try {
   Object resp = invokeTarget(msg.getBody());
   msg.setBody(resp);
} catch (InvocationTargetException e) {
   msg.setBody(e.getCause());
} catch (Throwable e) {
   msg.setBody(e);
}
return msg;
}

I think it's problematic. Even though most of the services won't use 
Throwable as normal input/output but at least java syntax allows so. Can we 
have a flag on the message to indicate it's a fault?

Thanks,
Raymond 


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