Upgrading from 2.4 to 2.5: Issues with Generics?

objectuser

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Dec 18, 2012, 9:36:20 PM12/18/12

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I'm working through the upgrade to 2.5 and I'm having trouble with my use of generics when used with an RPC service. My app works fine in 2.4, but if I change it to use 2.5, my service calls never make it to the server.

I've been able to reproduce the problem by using a generic method.

If I have something like this, it's fine:

public Result execute(Command command) { ... }

However, if it's like this, the method is never invoked on the server:

public <T extends SomeType> Result execute(Command<T> command) { ... }

Has anyone else encountered something similar?

Andrea Boscolo

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Dec 19, 2012, 3:09:27 AM12/19/12

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According to https://groups.google.com/d/topic/gwt-steering/9K_HtTdVVpE/discussion there are some regressions.
I guess your problem is related. The known regression with generics has a review pending, so you may be able to test is against trunk in a few days, or wait for the 2.5.1 release.

objectuser

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Dec 19, 2012, 8:47:24 AM12/19/12

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Thanks, Andrea.

I think you're right. This issue does seem to report the problem I'm having. I thought it was with the method signature, but my objects do have type parameters as described.