javax.xml.ws.AsyncHandler is an interface, and JAXB can't handle interfaces

[sachin baveja]

Hi
I am trying to implement a JAX-WS web service as asynchronous.
I have implemented the client side code as follows:

/*-------------------------------------------------------------------------------
CallbackHandler callbackHandler = new CallbackHandler ();
Future<?> resp = serverProxy.validateAsAsync(request, callbackHandler);
response = callbackHandler.getResponse();
//*--------------------------------------------------------------------------------

class CallbackHandler implements AsyncHandler<MyResponse> {
private MyResponse output;
public void handleResponse(Response<MyResponse> response) {
try {
output = response.get();
}catch (ExecutionException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}

MyResponsegetResponse() {
return output;
}
}

The SEI looks like below
@WebMethod
public Future<?> validateAsAsync(
@WebParam(name = "MyRequest", targetNamespace = "", partName = "parameter")
MyRequest parameter,
@WebParam(name = "callbackhandler", targetNamespace = "", partName = "asyncHandler")
AsyncHandler<MyResponse> asyncHandler);

I am getting the following error:
Caused by: java.security.PrivilegedActionException: com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 4 counts of IllegalAnnotationExceptions
javax.xml.ws.AsyncHandler is an interface, and JAXB can't handle interfaces.
this problem is related to the following location:
at javax.xml.ws.AsyncHandler
at private javax.xml.ws.AsyncHandler jaxws.ValidateAsAsync.callbackhandler

Looks like Jax-WS is not able to create the Jax-B object for ASyncHandler since it is an interface, how to get around this issue?
I really appreciate your help.

Thanks