[weld-dev] PostConstruct & PreDestroy in Java SE

[Martin Kouba]

javax.inject.Singleton was never supported in CDI 1.0 and 1.1 (final
versions). So it actually cannot be abandoned by CDI :-). But yes, I
think we should deprecate its usage in Weld API and remove the mentioned
chapter from docs. So that only @ApplicationScoped beans should be used.

Martin

Dne 6.9.2013 15:40, Kristoffer Sjögren napsal(a):
> Do you mean that Singleton should be abandoned by CDI? Or do you mean to
> clarify its role and/or implement proper lifecycle support for them?
> 
> 
> On Fri, Sep 6, 2013 at 2:31 PM, Martin Kouba <mkouba at redhat.com
> <mailto:mkouba at redhat.com>> wrote:
> 
>     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 Also the docs are outdated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
>     >
>     >
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> 
>