Dropwizard/Jersey Resources and interfaces

[Brent Ryan]

Is it possible with Dropwizard to define a resource like this using interfaces?

@Path("/myResource")

@Produces(MediaType.APPLICATION_JSON)

@Consumes(MediaType.APPLICATION_JSON)

public interface MyResource {

   @POST

   @Timed

   Response createSomething();

}

public class MyResourceImpl implements MyResource {

   @Override

   public Response createSomething() {

         ...//do some stuff

   }

}

When I tried several different patterns of adding this resource I couldn't get it to register with jersey properly.

environment.jersey().register(new MyResourceImpl());

The primary reason for even having this interface is so that we can dynamically generate a client from this interface by doing something like:

        DropwizardClientProxy<MyResource> clientProxy = new DropwizardClientProxy(config, e, MyResource.class);

        MyResource myResource = clientProxy.getResourceInterface();

        Response r = myResource.createSomething();

We got everything working to support this, but the only way we can get this working currently is to duplicate the annotations on the interface and the implementation.  I've read that a bunch of things like this seem to be supported in Jersey 2 (haven't tried it yet), but it seems like this should work with Jersey 1...

Anyone ever get this to work?

Thanks,

Brent

[Brent Ryan]

So I found this post "http://jersey.576304.n2.nabble.com/Annotations-in-interfaces-how-to-use-with-jersey-td7582032.html" and it looks like JAX-RS just has some crappy specifications for how to handle annotation inheritance and Jersey is just implementing that crappy spec related to this.

If I remove all method, class, and parameter annotations from my concrete MyResourceImpl class then it works as expected.  This kinda sucks because you can't use things like @Override and I'm not sure this will really work anyways for other parameter level annotations that are required....

Let me know if someone finds other solutions to this problem.

Thanks!