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https://issues.apache.org/jira/browse/TOMEE-509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13486122#comment-13486122
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Romain Manni-Bucau commented on TOMEE-509:
------------------------------------------
well your example still sounds weird to me since if you imagine you have
multiple instance of your em holder you can't know which em reference you
expect when calling em in your code (well i understood what you expected but
the spec speaks about extended em inheritance which is not always what you
expect)
so for me it is still not so clear
wdyt?
> Injected extended EntityManager is not registered (cannot be used for DB
> operations)
> ------------------------------------------------------------------------------------
>
> Key: TOMEE-509
> URL: https://issues.apache.org/jira/browse/TOMEE-509
> Project: TomEE
> Issue Type: Bug
> Affects Versions: 1.5.0, 1.5.1
> Environment: Windows 7 x64; jdk1.7.0_09 32 bit;
> apache-tomee-1.5.1-20121026.064316-51-webprofile.zip
> Reporter: Donatas Ciuksys
> Priority: Critical
>
> 1. Create class EntityManagerProducer:
> @SessionScoped
> @Stateful
> public class EntityManagerProducer implements Serializable {
>
> @PersistenceContext(type=PersistenceContextType.EXTENDED)
> private EntityManager em;
>
> @Produces
> public EntityManager getEntityManager() {
> return em;
> }
> }
> 2. Create injection client:
> @Named
> public class A {
>
> @Inject
> private EntityManager em;
> public String getDelegateClassName() {
> return em.getDelegate().getClass().getCanonicalName();
> }
>
> }
> 3. Create JSF page and try to call getDelegateClassName():
> <h:body>
> EntityManager is open: #{a.delegateClassName}
> </h:body>
> 4. Deploy (successful) and run the application - observe error message
> (printed in browser):
> An Error Occurred:
> InternalError: an entity manager should already be registered for this
> extended persistence unit
> viewId=/index.xhtml
> location=D:\dev\proj\templates\InjectionDemo\build\web\index.xhtml
> phaseId=RENDER_RESPONSE(6)
> Caused by:
> java.lang.IllegalStateException - InternalError: an entity manager should
> already be registered for this extended persistence unit
> at
> org.apache.openejb.persistence.JtaEntityManagerRegistry.getEntityManager(JtaEntityManagerRegistry.java:99)
> - Stack Trace
> java.lang.IllegalStateException: InternalError: an entity manager should
> already be registered for this extended persistence unit
> at
> org.apache.openejb.persistence.JtaEntityManagerRegistry.getEntityManager(JtaEntityManagerRegistry.java:99)
> at
> org.apache.openejb.persistence.JtaEntityManager.getEntityManager(JtaEntityManager.java:80)
> at
> org.apache.openejb.persistence.JtaEntityManager.getDelegate(JtaEntityManager.java:114)
> at
> org.apache.openejb.persistence.JtaEntityManager.getDelegate(JtaEntityManager.java:53)
> at beans.A.getDelegateClassName(A.java:19)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> ...
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