Hi all,

I'm about to implement group conversion via @ConvertGroup in the RI.

I'm wondering how we should deal with situations where @ConvertGroup is given for a one property of a base class and again on a sub-class (same for interface and impl):

public class Foo {

    @Valid
    @ConvertGroup(from=Default.class, to=AnotherGroup.class)
    Bar getBar() { ... }
}

public class Baz extends Foo {

    @Override
    @Valid
    @ConvertGroup(from=SomeGroup.class, to=YetAnotherGroup.class)
    Bar getBar() { ... }
}

AFAICS we've got the following options here (in descending order of my preference):

* Merge all the conversions for a property from the hierarchy (so behavior is the same as when all conversions would have been given in one place using @ConvertGroup.List)
* Consider only the top/bottom most conversion rule from the inheritance hierarchy
* Allow only one conversion for a property in the hierarchy, throw an exception if multiple conversions are given

Any thoughts?

--Gunnar