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From "John D. Ament" <john.d.am...@gmail.com>
Subject Re: Exclude annotation
Date Wed, 17 Sep 2014 20:51:03 GMT
It's almost like the requires feature from seam.  I think there was a
portability issue w/ OWB.

On Wed, Sep 17, 2014 at 3:58 PM, Thomas Andraschko <
andraschko.thomas@gmail.com> wrote:

> I understand the use-case but i don't like the name.
> If you use @ExcludeIfExists, you mark it as default implementation if no
> other impl is on the classpath.
>
> Maybe something like @DefaultImplementation would fit it better.
>
>
> 2014-09-17 19:14 GMT+02:00 Jason Porter <lightguard.jp@gmail.com>:
>
> > Feel free to prototype something in GitHub (or elsewhere) and present the
> > code.
> >
> > On Wed, Sep 17, 2014 at 10:11 AM, Christian Beikov <
> > christian.beikov@gmail.com> wrote:
> >
> > > Is nobody interested in something like that? I would really like to
> > > discuss it and also contribute the implementation.
> > >
> > > Mit freundlichen Grüßen,
> > >
> ------------------------------------------------------------------------
> > > *Christian Beikov*
> > > Am 25.08.2014 um 22:21 schrieb Christian Beikov:
> > >
> > >  Hello guys!
> > >>
> > >> I implemented an extension that excludes a bean or producer only if a
> > >> bean for a user specified type exists.
> > >> Here a little example:
> > >>
> > >> public class AImpl1 implement A { ... }
> > >>
> > >> @ExcludeIfExists(A.class)
> > >> public class AImpl2 implement A { ... }
> > >>
> > >> When both classes are on the classpath, AImpl2 will be vetoed.
> > >> When only AImpl2 is on the classpath, a bean will be created for it.
> > >>
> > >> This was something that I was missing when trying to use the Exclude
> > >> annotation of Deltaspike. Now I would like to know if you are
> > interested in
> > >> such an extension. I can provide you the basic code, which is actually
> > not
> > >> that trivial.
> > >> I think many people would benefit from this extension. Especially the
> > >> servlet module could benefit from that too since it could replace
> > current
> > >> usages of the Deltaspike qualifier on the producers with the exclude
> > >> annotation. Then the servlet module could provide beans for the
> servlet
> > >> resources on EE6 servers. On EE7 servers those beans would be vetoed
> > since
> > >> EE7 servers already provides default beans for many resources.
> > >>
> > >> I hope you like the idea and I can help get that into the next
> > deltaspike
> > >> release.
> > >> --
> > >>
> > >> Mit freundlichen Grüßen,
> > >>
> ------------------------------------------------------------------------
> > >> *Christian Beikov*
> > >>
> > >
> > >
> >
> >
> > --
> > Jason Porter
> > http://en.gravatar.com/lightguardjp
> >
>

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