EntityManagerFactory problem

[roberto72]

JBOSS 4.0.4RC1

Stateless code:

public class AlfaSessionBean implements AlfaSession {
EntityManager m_oEM = null;

public AlfaSessionBean() {
System.out.println("PreFindPersMgrFactory");
EntityManagerFactory oEMF = Persistence.
createEntityManagerFactory("TestPersistenceManager");
System.out.println("PreFindPersMgr");
m_oEM = oEMF.getEntityManager();
System.out.println("EPM=" + m_oEM);
}
....
}


META-INF/persistence.xml:
[persistence]
[persistence-unit name="TestPersistenceManager"
transaction-type="JTA"]
[provider]org.hibernate.ejb.HibernatePersistence[/provider]
[jta-data-source]java:/TestDS[/jta-data-source>]
[properties /]
[/persistence-unit]
[/persistence>

Exception:

2006-03-03 14:32:03,516 DEBUG [org.jboss.mx.loading.RepositoryClassLoader] setRe
pository, repository=org.jboss.mx.loading.HeirarchicalLoaderRepository3@1066caf,
cl=org.jboss.mx.loading.UnifiedClassLoader3@a06d25{ url=null ,addedOrder=0}
2006-03-03 14:32:03,524 FATAL [org.hibernate.ejb.packaging.PersistenceXmlLoader]
TestPersistenceManager JTA
2006-03-03 14:32:03,527 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web
].[localhost].[/test].[jsp]] Servlet.service() for servlet jsp threw exception
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at org.jboss.ejb3.EJBContainer.construct(EJBContainer.java:482)
at org.jboss.ejb3.AbstractPool.create(AbstractPool.java:62)
at org.jboss.ejb3.ThreadlocalPool.get(ThreadlocalPool.java:48)
at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(Stateles
sInstanceInterceptor.java:51)


TIA
Roberto Colmegna

[mwoelke]

Why dont u use:

@PersistenceContext(unitName="TestPersistenceManager")
EntityManager m_oEM;

to get a reference to your EntityManager? This enables Dependency Injection for the EntityManager.


Regards, Milan Wölke

[roberto72]

I obtain a NullPointerExcep when I trying to use m_oEM.

But, on the log, I noticed that:

2006-03-03 15:34:51,934 INFO [org.jboss.ejb3.JmxKernelAbstraction] installing M
Bean: jboss.j2ee:service=EJB3,ear=test.ear,jar=test-ear.jar,name=AlfaSessionBean
with dependencies:
2006-03-03 15:34:51,934 INFO [org.jboss.ejb3.JmxKernelAbstraction] persiste
nce.units:unitName=TestPersistenceManager


TIA
Roberto Colmegna

[roberto72]

Solved: wrong position of persistence.xml, I put it into:
[test.ear]\META-INF\

but it must go into:
[test.ear]\[test-ejb.jar]\META-INF\

TIA