Service return type best paratice

[Filippo De Luca]

Hi to all,

I have a doubt about the best return type of a RPC service: shortly is better to return an interface or the implementation object? (Set or HashSet?)

I think is better use the implementing class due to the fast serialization or permutation, am I wrong?

[Paul Robinson]

You're correct. Best practice for choice of return type in an RPC interface is the exact opposite from what you would normally use in Java. That is, you should be as specific as possible to avoid forcing GWT having to generate serialization code for every implementation of Set or List etc.

Paul

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[Filippo De Luca]

Thank you very much Paul for the explanation.