[bv-dev] @ConvertGroup and inheritance

[Gunnar Morling]

I created https://hibernate.onjira.com/browse/BVAL-332 for this.


2012/11/9 Emmanuel Bernard <emmanuel at hibernate.org>

> I like your first option too. Can you also add an issue at the spec level?
> Ideally do a pull request.
>
>
> On 9 nov. 2012, at 19:01, Gunnar Morling <gunnar at hibernate.org> wrote:
>
> 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
>
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