Re: [cdi-dev] Alternative producer methods
Hi Pete!
Ok, summing up your elaboration means that
public class MyClassContainsProd {
public @Produces @Alternative OtherDings createOtherDings() {
return new OtherDings();
}
is perfectly fine and 'MyClassContainsProd' doesn't need to be annotated as
@Alternative, right?
LieGrue,
strub
----- Original Message -----
From: Pete Muir <pmuir(a)redhat.com>
To: Mark Struberg <struberg(a)yahoo.de>
Cc: cdi-dev <cdi-dev(a)lists.jboss.org>
Sent: Monday, April 2, 2012 11:30 AM
Subject: Re: [cdi-dev] Alternative producer methods
Right now, I can't find a better path through the spec to explain this, if
anyone knows, then say, if not we should clarify for CDI 1.1
Looking at 11.1 getBeanClass() you can see that the bean class of a producer
method (or field) is the class of the bean declaring the producer method (or
field). This should probably be actually specified, rather than just in a
interface description!
From this, we can use Mark's reference to 5.1.1 to see that when we want to
enable an alternative producer, we in fact use the bean class name.
On 1 Apr 2012, at 14:51, Mark Struberg wrote:
> Dear EG colleagues!
>
>
> I have a question about @Alternative on producer methods:
> consider the following class:
>
> // here is NO alternative annotation!
>
> public class AlternativeOnProducerMethodOnlyBean {
> @Produces @Alternative
> public IProducedBean generateBean2() {..}
> }
>
> So the class itself is NOT annotated as @Alternative
>
> I'm not sure if 5.1.1 allows this or the other way around: if this must
be supported.
>
> Imo the important parts are (from 5.1.1)
>> Each child <class> element must specify the name of an
alternative bean class.
>
>> If there is no class with the specified name, or if the class with the
specified
>
>> name is not an alternative bean class, the container automatically
detects
>
>> the problem and treats it as a deployment problem.
>
> The question is now how 'an alternative bean class' is to be
interpreted ^^
> The first paragraph of 5.1.1 says:
>
>> An alternative is selected for the bean archive if either ...
>> * the alternative is a producer method, field or resource, and the
>
>> bean class that declares the method or field is listed, ...
>
>
> But does this qualify the AlternativeOnProducerMethodOnlyBean as
'alternative bean class'?
>
> Any ideas?
>
> Btw: the whole topic of disposal methods for @Alternative producers are
completely unspecified...
>
> LieGrue,
> strub
>
> _______________________________________________
> cdi-dev mailing list
> cdi-dev(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/cdi-dev