[weld-dev] PostConstruct & PreDestroy in Java SE

[Martin Kouba]

FYI:
https://issues.jboss.org/browse/WELD-1504

Martin

Dne 9.9.2013 19:20, Pete Muir napsal(a):
> Agree with Mark entirely. There is no reason for Weld not support this AFAIK. I think we agreed informally in CDI 1.1 that @Singleton is essentially identical to @ApplicationScoped in behaviour.
> 
> On 7 Sep 2013, at 18:22, Mark Struberg <struberg at yahoo.de> wrote:
> 
>> The 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 Also the docs are outdated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
>>>>
>>>>
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>>>
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>>
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