The AnnotationRelProvider forces the @Relation annotation to be put in the Entity/DTO class instead of on the Controller

[jstano]

The problem here is that in a modular environment the @relation annotation is a "detail" that the domain layer should not know about.

It would seem that it would be cleaner to put the @relation annotation on the same class that the @ExposesResourceFor is on, i.e. the controller.

I modified the AnnotationRelProvider to look first on the controller and only if it isn't found, to then look on the entity.

We could create our own class to do this, but it seems like this change would be useful to other people. It could also be in a new class, possibly ControllerAnnotationRelProvider" if there is concern that the AnnotationRelProvider should not know about controllers.

I've created a pull request for this change.