[weld-dev] PostConstruct & PreDestroy in Java SE

Sat Sep 7 15:58:31 EDT 2013

I agree. Ill stick to ApplicationScope until the practicalities are sorted
out.

Thanks for the deeper clarification.

On Sat, Sep 7, 2013 at 9:42 PM, Mark Struberg <struberg at yahoo.de> wrote:

> No, I don't expect users to read the TCK - but it's binding for the
> container vendors.
>
> Again: I completely agree with Martin with his advice to not use
> @javax.inject.Singleton in CDI projects as it is really underspecified in
> JSR-330 already. And JSR-299 does not add any wording to make things more
> clear.
>
> But the fuzzyness around @Singleton is mainly about it's lifecycle, etc.
> The requirement for @PostConstruct and @PreDestroy support is otoh actually
> pretty well defined in atinject imo.
>
>
> LieGrue,
> strub
>
>
>
> >________________________________
> > From: Kristoffer Sjögren <stoffe at gmail.com>
> >To: Mark Struberg <struberg at yahoo.de>
> >Cc: Martin Kouba <mkouba at redhat.com>; "weld-dev at lists.jboss.org" <
> weld-dev at lists.jboss.org>
> >Sent: Saturday, 7 September 2013, 21:11
> >Subject: Re: [weld-dev] PostConstruct & PreDestroy in Java SE
> >
> >
> >
> >http://docs.jboss.org/cdi/spec/1.1/cdi-spec.pdf "1.2.4 Relationship to
> Dependency Injection for Java"  is what you referring to I suppose? But
> there is no telling how to use it. Also, its a bit unfortunate that we have
> two Singleton annotations, begging for confusion.
> >
> >
> >Nevermind vagueness, but do you expect users to read the TCK? Not trying
> criticize, there may be room for improvement here no?
> >
> >
> >
> >
> >
> >
> >On Sat, Sep 7, 2013 at 8:57 PM, Mark Struberg <struberg at yahoo.de> wrote:
> >
> >
> >>
> >>No, the TCK is part of the deliverable for the specification. As is the
> API JavaDoc.
> >>
> >>Also the spec mentions the 'Injection for Java' specification (==
> JSR-330) as reference.
> >>
> >>
> >>LieGrue,
> >>strub
> >>
> >>
> >>
> >>>________________________________
> >>> From: Kristoffer Sjögren <stoffe at gmail.com>
> >>>To: Mark Struberg <struberg at yahoo.de>
> >>>Cc: Martin Kouba <mkouba at redhat.com>; "weld-dev at lists.jboss.org" <
> weld-dev at lists.jboss.org>
> >>>Sent: Saturday, 7 September 2013, 20:54
> >>
> >>>Subject: Re: [weld-dev] PostConstruct & PreDestroy in Java SE
> >>>
> >>>
> >>>
> >>>Alright, the specification and TCK is inconsistent. But as a user, I
> dont care about the TCK and it does not make sense to enforce requirements
> on the specification in the TCK. For users, strictly speaking, anything not
> stated in the specification is unsupported. Correct?
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>On Sat, Sep 7, 2013 at 8:03 PM, Mark Struberg <struberg at yahoo.de>
> wrote:
> >>>
> >>>And before there are any questions: it's not directly stated inside the
> CDI spec but in the TCK documentation:
> >>>>
> >>>>
> http://docs.jboss.org/cdi/tck/reference/1.0.4.SP1/pdf/jsr299-tck-reference-guide.pdf
> >>>>
> >>>>"JSR-330 - CDI builds on JSR-330, and as such JSR-299 implementations
> must additionally pass the JSR-330 TCK."
> >>>>
> >>>>again: I agree with Martin that you should better not use it. But it
> should work nontheless.
> >>>>
> >>>>
> >>>>LieGrue,
> >>>>strub
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>----- Original Message -----
> >>>>
> >>>>> From: Mark Struberg <struberg at yahoo.de>
> >>>>> To: Martin Kouba <mkouba at redhat.com>; Kristoffer Sjögren <
> stoffe at gmail.com>
> >>>>> Cc: "weld-dev at lists.jboss.org" <weld-dev at lists.jboss.org>
> >>>>> Sent: Saturday, 7 September 2013, 19:22
> >>>>> Subject: Re: [weld-dev] PostConstruct & PreDestroy in Java SE
> >>>>>
> >>>>>T he wording is not correct.
> >>>>
> >>>>>
> >>>>> Each JSR-299 Container must _fully_ implement the JSR-330
> specification and pass
> >>>>> the JSR-330 TCK. Thus each CDI Container MUST support
> javax.inject.Singleton.
> >>>>> But it's actually not really defined in detail how this scope should
> behave.
> >>>>> And the atinject and EE specs also define that @PostConstruct and
> @PreDestroy
> >>>>> must work for @Singleton beans. So this is imo a bug. But otoh I
> personally
> >>>>> would suggest to not use javax.inject.Singleton because of the
> aforementioned
> >>>>> underspecified behaviout.
> >>>>>
> >>>>> LieGrue,
> >>>>> strub
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>> ----- Original Message -----
> >>>>>>  From: Martin Kouba <mkouba at redhat.com>
> >>>>>>  To: Kristoffer Sjögren <stoffe at gmail.com>
> >>>>>>  Cc: weld-dev at lists.jboss.org
> >>>>>>  Sent: Friday, 6 September 2013, 14:31
> >>>>>>  Subject: Re: [weld-dev] PostConstruct & PreDestroy in Java SE
> >>>>>>
> >>>>>>  Actually there's no singleton scope and corresponding built-in
> context
> >>>>>>  defined in the CDI spec. Though Weld API contains
> >>>>>>  org.jboss.weld.context.SingletonContext. Also the docs are outdated
> >>>>>>  (chapter 5.4. The singleton pseudo-scope). I think relevant classes
> >>>>>>  should be deprecated and the docs updated.
> >>>>>>
> >>>>>>  With regard to lifecycle callbacks - Weld only invalidates
> application
> >>>>>>  context during shutdown right now [1].
> >>>>>>
> >>>>>>  Martin
> >>>>>>
> >>>>>>  [1]
> >>>>>>
> >>>>>
> https://github.com/weld/core/blob/master/impl/src/main/java/org/jboss/weld/bootstrap/WeldRuntime.java#L56
> >>>>>>
> >>>>>>  Dne 6.9.2013 14:09, Kristoffer Sjögren napsal(a):
> >>>>>>>   Hi
> >>>>>>>
> >>>>>>>   We're running Weld 2.0.3.Final in a Java SE environment and have
> >>>>>>>   encountered a precarious situation where it seems like Weld is
> not
> >>>>>>>   consistent in handling the lifecycle of singleton beans.
> >>>>>>>
> >>>>>>>   We have singleton beans with @PostConstruct and @PreDestroy
> methods.
> >>>>>>>   During Weld.initialize() all @PostConstruct methods are called.
> But
> >>>>>>>   during @PreDestroy methods are never called during
> Weld.shutdown().
> >>>>>>>   @PreDestroy is only called on beans which are @ApplicationScoped.
> >>>>>>>
> >>>>>>>   Is this according to specification or a bug?
> >>>>>>>
> >>>>>>>   Cheers,
> >>>>>>>   -Kristoffer
> >>>>>>>
> >>>>>>>
> >>>>>>>   _______________________________________________
> >>>>>>>   weld-dev mailing list
> >>>>>>>   weld-dev at lists.jboss.org
> >>>>>>>   https://lists.jboss.org/mailman/listinfo/weld-dev
> >>>>>>>
> >>>>>>
> >>>>>>  _______________________________________________
> >>>>>>  weld-dev mailing list
> >>>>>>  weld-dev at lists.jboss.org
> >>>>>>  https://lists.jboss.org/mailman/listinfo/weld-dev
> >>>>>>
> >>>>>
> >>>>> _______________________________________________
> >>>>> weld-dev mailing list
> >>>>> weld-dev at lists.jboss.org
> >>>>> https://lists.jboss.org/mailman/listinfo/weld-dev
> >>>>>
> >>>>
> >>>
> >>>
> >>>
> >>
> >
> >
> >
>
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