Simply put, you don´t, because the call itself won´t return anything.
The "return type" is defined inside the AsyncCallback.
If you have an interface like so:
public interface GreetingServiceAsync {
void greetServer(String input, AsyncCallback<String> callback);
}
String will be your "return type".
Then you make a call to your service, and when it returns (hopefully
successful)
you can handle the String in the onSuccess event handler.
greetingService.greetServer(textToServer, new AsyncCallback<String>()
{
public void
onFailure(Throwable caught) {
//
Handle failure
}
public void
onSuccess(String result) {
//Do
some stuff with result
}
});
What you need to do is basically change AsyncCallback<String> to
AsyncCallback<Request>.
Also change the return type for your syncronous service to Request.
On 10 Juni, 19:29, Maddy <[email protected]> wrote:
> Hi,
>
> How can I change the return type of Asynccallback methods from void to
> 'Request'. Some where in the forums, I read that we can change the
> return type to 'Request' object. But When I tried, It is giving me
> compilation error. Please let me know, how this can be done.
>
> Thanks
> Maddy
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