[weld-dev] potential weld jira
Martin Kouba
mkouba at redhat.com
Thu Nov 19 02:45:45 EST 2015
The enablement is per bean archive but specialization is not, see also
4.3. Specialization:
"When an enabled bean, as defined in Enabled and disabled beans,
specializes a second bean, we can be certain that the second bean is
never instantiated or called by the container. Even if the second bean
defines a producer or observer method, the method will never be called."
In other words, AlternativeCounterProducerModified (which is enabled in
beans-xml-modified.jar) specializes CounterProducerModified. And so
CounterProducerModified is not enabled for beans-xml-modified2.jar
because it is specialized by any other enabled bean.
Feel free to post a question to the cdi-dev ML.
Martin
Dne 18.11.2015 v 18:14 Emily Jiang napsal(a):
> Thank you Martin!
>
> I interpreted this enablement differently.
>
> The CDI 1.2 spec states:
>
> A bean is said to be /enabled/ if:
>
> * it is deployed in a bean archive, and
> * it is not a producer method or field of a disabled bean, and
> * it is not specialized by any other enabled bean, as defined in
> _Specialization_
> <http://docs.jboss.org/cdi/spec/1.2/cdi-spec.html#specialization>,
> and either
> * it is not an alternative, or it is a selected alternative of at
> least one bean archive or the application.
>
> Otherwise, the bean is said to be disabled.
>
> In the above app, there are two jars. The jar
> beans-xml-modified2.jar.jar does not enable the alternative and in its
> injection, it should only see the CounterProducerModified. While in
> another jar, the alternative AlternativeCounterProducerModified
> completely disabled the CounterProducerModified. Any injection in that
> jar should only see the specialized bean.
>
> From what you explained, the beans.xml in one jar enabled the
> alternative bean and affect other jars. From my understanding, the
> enablement of alternatives/interceptors are specific for that archive
> and should not affect other jars.
>
> Also OpenWebBeans behaves differently from Weld, and OpenWebBeans does
> what I have expected (enablement are per jar only).
>
> Many thanks,
> Emily
> ===========================
> Emily Jiang
> WebSphere Application Server, CDI Development Lead
>
> MP 211, DE3A20, Winchester, Hampshire, England, SO21 2JN
> Phone: +44 (0)1962 816278 Internal: 246278
>
> Email: emijiang at uk.ibm.com
> Lotus Notes: Emily Jiang/UK/IBM at IBMGB
>
>
>
>
> From: Martin Kouba <mkouba at redhat.com>
> To: Emily Jiang/UK/IBM at IBMGB,
> Cc: Weld <weld-dev at lists.jboss.org>
> Date: 18/11/2015 15:52
> Subject: Re: potential weld jira
>
> ------------------------------------------------------------------------
>
>
>
> Well, it seems the problem is that CounterProducerModified is
> specialized by AlternativeCounterProducerModified and so it's not
> enabled and therefore it's producer method is also disabled (see also
> 5.1.2. Enabled and disabled beans [1]), i.e. it's not available for
> injection in beans-xml-modified2.jar. And
> AlternativeCounterProducerModified is an alternative which is not
> selected for beans-xml-modified2.jar.
>
> It should work if you enable AlternativeCounterProducerModified globally
> or select AlternativeCounterProducerModified for beans-xml-modified2.jar.
>
> Martin
>
> [1]
> http://docs.jboss.org/cdi/spec/1.2/cdi-spec.html#enablement
>
> Dne 18.11.2015 v 16:14 Emily Jiang napsal(a):
> > Hi Martin,
> >
> > Here's a simplified form of the test case:
> >
> >
> > The application does not start, reporting
> >
> > [ERROR ] CWWKZ0004E: An exception occurred while starting the
> > application testDiffBDA. The exception message was:
> > com.ibm.ws.container.service.state.StateChangeException:
> > org.jboss.weld.exceptions.DeploymentException: WELD-001408: Unsatisfied
> > dependencies for type String with qualifiers @CounterModifiedQualifier
> > at injection point [BackedAnnotatedField] @Inject
> > @CounterModifiedQualifier
> >
> com.ibm.jcdi.test.beansxml.CounterProducerConsumerModified2.modifiedProducer
> > at
> >
> com.ibm.jcdi.test.beansxml.CounterProducerConsumerModified2.modifiedProducer(CounterProducerConsumerModified2.java:0)
> >
> > There are five classes in the .war.
> >
> > testDiffBDA.war/WEB-INF/classes/test/diff/web/FrontEndServlet.class
> >
> > @Inject CounterProducerConsumerModified2 bean;
> >
> > This class, CounterProducerConsumerModified2.class is packaged in the
> > first of two WEB-INF/lib jars, at
> >
> testDiffBDA.war/WEB-INF/lib/beans-xml-modified2.jar.jar/com/ibm/jcdi/test/beans/xml.
> > There is a bean that needs another bean injected into it:
> >
> > @Inject at CounterModifiedQualifierString modifiedProducer;
> >
> > The remaining three classes are all in the second WEB-INF/lib jar, at
> >
> testDiffBDA.war/WEB-INF/lib/beans-xml-modified.jar.jar/com/ibm/jcdi/test/beansxml/.
> > The classes are
> >
> > CounterModifiedQualifier (the interface)
> > CounterProducerModified (the bean implementing that interface)
> > AlternativeCounterProducerModified (an alternative bean)
> >
> > The AlternativeCounterProducerModified class is declared in
> >
> testDiffBDA.war/WEB-INF/lib/beans-xml-modified.jar.jar/META-INF/beans.xml,
> >
> > <alternatives>
> >
> <class>com.ibm.jcdi.test.beansxml.AlternativeCounterProducerModified</class>
> > </alternatives>
> >
> > The test app starts correctly if the <alternative> stanza is
> commented out.
> >
> >
> > Many thanks,
> > Emily
> > ===========================
> > Emily Jiang
> > WebSphere Application Server, CDI Development Lead
> >
> > MP 211, DE3A20, Winchester, Hampshire, England, SO21 2JN
> > Phone: +44 (0)1962 816278 Internal: 246278
> >
> > Email: emijiang at uk.ibm.com
> > Lotus Notes: Emily Jiang/UK/IBM at IBMGB
> >
> >
> >
> >
> > From: Martin Kouba <mkouba at redhat.com>
> > To: Emily Jiang/UK/IBM at IBMGB, Weld <weld-dev at lists.jboss.org>,
> > Date: 18/11/2015 07:58
> > Subject: Re: potential weld jira
> > ------------------------------------------------------------------------
> >
> >
> >
> > Hi Emily,
> >
> > a brief description would be helpful - it's not a trivial
> > deployment/reproducer.
> >
> > Martin
> >
> > Dne 16.11.2015 v 23:15 Emily Jiang napsal(a):
> > > I'm trying to deploy the attached war but got Weld alidation error. On
> > > Glassfish 4.1, I got this error:
> > > Error occurred during deployment: Exception while loading the app
> : CDI
> > > deployment failure:WELD-001408: Unsatisfied dependencies for type
> String
> > > with qualifiers @DiffBDACounterQualifier at injection point
> > > [BackedAnnotatedField] @Inject @DiffBDACounterQualifier
> > >
> >
> com.ibm.jcdi.test.beansxml.CounterProducerConsumerModified.diffBDAProducer
> > > at
> > >
> >
> com.ibm.jcdi.test.beansxml.CounterProducerConsumerModified.diffBDAProducer(CounterProducerConsumerModified.java:0)
> > > WELD-001475: The following beans match by type, but none have matching
> > > qualifiers: - Producer Method [String] with qualifiers
> > > [@CounterUnmodifiedQualifier @Any] declared as
> [[BackedAnnotatedMethod]
> > > @ExcludeClassInterceptors @Produces @CounterUnmodifiedQualifier
> > >
> >
> com.ibm.jcdi.test.beansxml.CounterProducerNoModifiers.getCounterBeanProducer()],
> > > - Producer Method [String] with qualifiers [@BatchProperty @Any]
> > > declared as [[UnbackedAnnotatedMethod] @Produces @Dependent
> > > @BatchProperty public com.ibm.jbatch.container.cdi.BatchProducerBean.p
> > > .... msg.seeServerLog
> > >
> > >
> > >
> > >
> > >
> > > The app works fine on OpenWebBeans. Any ideas on what was wrong?
> > >
> > > Many thanks,
> > > Emily
> > > ===========================
> > > Emily Jiang
> > > WebSphere Application Server, CDI Development Lead
> > >
> > > MP 211, DE3A20, Winchester, Hampshire, England, SO21 2JN
> > > Phone: +44 (0)1962 816278 Internal: 246278
> > >
> > > Email: emijiang at uk.ibm.com
> > > Lotus Notes: Emily Jiang/UK/IBM at IBMGB
> > >
> >
> > --
> > Martin Kouba
> > Software Engineer
> > Red Hat, Czech Republic
> >
> >
> >
>
> --
> Martin Kouba
> Software Engineer
> Red Hat, Czech Republic
>
>
>
--
Martin Kouba
Software Engineer
Red Hat, Czech Republic
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