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From Christian Beikov <christian.bei...@gmail.com>
Subject Re: Exclude annotation
Date Wed, 17 Sep 2014 20:58:21 GMT
The annotation can also be applied on producers and I am not sure if 
@DefaultImplementation would fit then.

Mit freundlichen Grüßen,
------------------------------------------------------------------------
*Christian Beikov*
Am 17.09.2014 um 21:58 schrieb Thomas Andraschko:
> 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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