EntitiManager and Observer("org.jboss.seam.postInitialization")

[marx3]

How to get entityManager in class which is run via
@Observer(org.jboss.seam.postInitialization) ?
I've tried

@PersistenceContext
private EntityManager em;

but it doesn't work.

I've tried

@In private EntityManager entityManager;

and

EntityManager em = (EntityManager) Component.getInstance("entityManager");

but I have exception

15:22:54,745 INFO  [Contexts] starting up: org.jboss.seam.security.facesSecurityEvents
15:26:19,560 ERROR [[/smo]] Exception sending context initialized event to listener instance of class org.jboss.seam.servlet.SeamListener
java.lang.IllegalArgumentException: EntityManagerFactory not found in JNDI : java:/>xxxEntityManagerFactory
        at org.jboss.seam.persistence.ManagedPersistenceContext.getEntityManagerFactoryFromJndiOrValueBinding(ManagedPersistenceContext.java:247)

Components.xml and persistence.xml are seam-genned and seems  ok.

Is it because of Seam not being completely initialised?

[marx3]

Accordingly to this
link
injecting EntityManager should work, but it doesn't.
Any help?

[ignaciolarranaga.ignaciolarranaga.gmail.com]

I have the same error.

May be this can help: http://relation.to/2640.lace

[kyatim]

Don't forget put @Name annotation
(it was may problem but now all work fine)

[zaquas]

It appears not work with jboss as 6.0 final.

I've try with this code:

@Name(value="applicationstartup")
public class ApplicationStartup {
     
     @In
     EntityManager entityManager;
     
     @Observer(value="org.jboss.seam.postInitialization")
     public  void startup(){
          // my business code stay here...
     }
     
}

But I've only read in the console:

Exception sending context initialized event to listener instance of class org.jboss.seam.servlet.SeamListener:
java.lang.IllegalArgumentException: EntityManagerFactory not found in JNDI : java:/poplaEntityManagerFactory

Have you some ideas?
Thanks in advance
Stefano

[zaquas]

Hello,
I've investigated all this morning and I found that the same code work well with jboss as 5.1.

After that, I tried as suggest Pete in this post as here:

@Name(value = "applicationstartup")
@Transactional
public class ApplicationStartup {

     @In
     AsynchronousProcessor asynchronousProcessor;

     @Observer(value = "org.jboss.seam.postInitialization")
     public void startup() {

          System.out.println("wating for...");
          asynchronousProcessor.runAction(30 * 1000l);

     }

}

@Name("asynchronousProcessor")
@AutoCreate
public class AsynchronousProcessor {

     @In EntityManager entityManager;
     
     @Asynchronous
     public void runAction(@Duration long duration) {          
          
          System.out.println(entityManager.toString());               
          
     }

}

And in this manner works! But, for some strange thing, if I put time at few millisecond, not work again...
Strange things!!!