Re: GWT error "no instantiable subtypes" with interface in RPC method with 1 known concrete class?

Sorry for being impatient ;)..

Anybody an idea ? (interface not allowed at all in RPC method calls? )

No idea. Might be a bug... or intended ;-) Maybe GWT explicitly searches for a class that implements TransportTokenResponse<ProductDto> and does not care about your <T> implementation.

Does it work if you add

SimpleTransportTokenResponse<ProductDto> dummyMethod();

to your service?

-- J.

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