Googling for DeRPC (and not Direct-Eval RPC) got me what I needed.
Here it is, for the sake of completeness:

  
http://groups.google.com/group/google-guice/browse_thread/thread/d958f5a82d45706a/bc6bca85513d9cb3

On May 27, 2:35 pm, hbf <kaspar.fisc...@dreizak.com> wrote:
> Hi,
>
> I would like to use the new and experimental [1] Direct-Eval RPC of
> GWT 2 with server-side Guice. However, I could only find information
> on configuring Guice and GWT for the "old" RPC, see [2]. To inject the
> service, the latter blog suggests:
>
> @Singleton
> public class GuiceRemoteServiceServlet extends RemoteServiceServlet {
>   @Inject
>   private Injector injector;
>
>   @Override
>   public String processCall(String payload) throws
> SerializationException {
>     try {
>       RPCRequest req = RPC.decodeRequest(payload, null, this);
>
>       RemoteService service = getServiceInstance(
>             req.getMethod().getDeclaringClass());
>
>       return RPC.invokeAndEncodeResponse(service, req.getMethod(),
>         req.getParameters(), req.getSerializationPolicy());
>     } catch (IncompatibleRemoteServiceException ex) {
>       log("IncompatibleRemoteServiceException in the
> processCall(String) method.",
>           ex);
>       return RPC.encodeResponseForFailure(null, ex);
>     }
>   }
>
>   @SuppressWarnings({"unchecked"})
>   private RemoteService getServiceInstance(Class serviceClass) {
>     return (RemoteService) injector.getInstance(serviceClass);
>   }
>
> }
>
> What is the recommended way to do this with the new RpcServlet instead
> of RemoteServiceServlet?
>
> Many thanks,Kaspar
>
> [1]http://code.google.com/webtoolkit/doc/latest/DevGuideServerCommunicat...
> [2]http://stuffthathappens.com/blog/2009/09/14/guice-with-gwt/

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