No I think there is no method that can do that, the RPC is asynchronous.
You should create a callback and retrieveData in the callback instead.
Bowie
=================
www.html5bydemo.com
Le lundi 19 mars 2012 04:22:52 UTC+1, tong123123 a écrit :
>
> as gwt has no java pattern class and so I want to use server validation,
> at first, my code is
> if (!validate()_{
>
> }else{
> retrieveData();
> }
>
> the validate() method is only client side validation first, but now I need
> add rpc server validation test, so I think if the server validation rpc
> call is non-blocking, then maybe
> there is server validation error, but the client side code already run to
> the else part and run retrieveDate(), any method to ensure the validate()
> method is completed before retrieveData() is called?
>
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