[cdi-dev] ProcessAnnotatedType & Bean Discovery mode

John Ament john.ament at spartasystems.com
Mon Jul 24 07:35:16 EDT 2017


The issue has to do with ProcessAnnotatedType firing in a bean archive of discovery mode "annotated."  I think we all agree that if the discovery mode is all with a trim flag, it works correctly.


It appears that if you have an Arquillian test in Weld, where a class has no bean defining annotations, it still has a PAT fired.  If you look at https://github.com/hammock-project/hammock/blob/hammock-1.5/web-tck/src/main/java/ws/ament/hammock/web/tck/ServletTest.java you'll see it includes a DefaultServlet class, which has no bean defining annotations.  In Weld, this generates a PAT, but in OWB it does not.


John


________________________________
From: Matej Novotny <manovotn at redhat.com>
Sent: Monday, July 24, 2017 6:38 AM
To: John Ament
Cc: Antoine Sabot-Durand; Martin Kouba; cdi-dev
Subject: Re: [cdi-dev] ProcessAnnotatedType & Bean Discovery mode

What case exactly do you think Weld does incorrectly?

If you have beans.xml `all` with `<trimm/>`, you should be firing PAT for all. That's what me and Martin said.

Matej

----- Original Message -----
> From: "John Ament" <john.ament at spartasystems.com>
> To: "Antoine Sabot-Durand" <asd at redhat.com>, "Martin Kouba" <mkouba at redhat.com>
> Cc: "cdi-dev" <cdi-dev at lists.jboss.org>
> Sent: Monday, July 24, 2017 12:09:16 PM
> Subject: Re: [cdi-dev] ProcessAnnotatedType & Bean Discovery mode
>
>
>
> Then that means Weld is doing it wrong (firing PAT for all classes).
>
>
>
>
> John
>
> From: Antoine Sabot-Durand <asd at redhat.com>
> Sent: Monday, July 24, 2017 4:31 AM
> To: Martin Kouba
> Cc: John Ament; cdi-dev
> Subject: Re: [cdi-dev] ProcessAnnotatedType & Bean Discovery mode
> Yes it’s the correct interpretation.
> Confusion may come from the fact that we first considered to specify this
> feature the other way around (discover all types on implicites bean archive
> but only keep classes with BDA for bean discovery). We switched to this
> approach because we thought it was better for backward compatibility.
>
> Antoine
>
> > Le 24 juil. 2017 à 08:27, Martin Kouba <mkouba at redhat.com> a écrit :
> >
> > Hi John,
> >
> > I think OWB interpretation is correct.
> >
> > In an implicit bean archive (implicit = bean archive with
> > bean-discovery-mode=annotated) PAT is only fired for discovered types
> > and the container only discovers each class with a bean defining
> > annotation.
> >
> > For trimmed bean archive - only explicit bean archives may be marked as
> > 'trimmed'. PAT is fired there but if it does not have a bean defining
> > annotation it's removed from the set of discovered types, i.e. no bean
> > is created.
> >
> > Martin
> >
> > Dne 23.7.2017 v 14:32 John Ament napsal(a):
> >> Hi,
> >>
> >>
> >> An issue popped up in OWB wanted to get the EG's perspective on this.
> >>
> >>
> >> I have a given bean archive, with a class in it (no bean defining
> >> annotations). My interpretation of [1] and [2] is that this class is
> >> fired as a ProcessAnnotatedType, regardless of what is in beans.xml. In
> >> OWB, if I do bean-discovery-mode=annotated it does not get fired, but if
> >> it is all, even with a <trim/> a PAT gets fired. However it seems that
> >> it should get fired before anything is even considered about the class,
> >> and whether it has annotations.
> >>
> >>
> >> [1]:
> >> https://docs.jboss.org/cdi/spec/1.2/cdi-spec.html#process_annotated_type
>
>
> Contexts and Dependency Injection for the Java EE platform
> docs.jboss.org
> A well-defined lifecycle for stateful objects bound to lifecycle contexts,
> where the set of contexts is extensible. A sophisticated, typesafe
> dependency injection ...
>
>
> >>
> >> [2]:
> >> https://docs.jboss.org/cdi/spec/2.0/cdi-spec.html#process_annotated_type
> >>
> >>
> >> John
> >>
> >>
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> >>
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> >
> > --
> > Martin Kouba
> > Senior Software Engineer
> > Red Hat, Czech Republic
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________________________________
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