Re: Unable to locate a single EntityManager. You must provide the persistence unit name as defined in the persistence.xml using the @PersistenceContext annotation.

[Andreas Ernst]

Hi Felix,

yes, you are right i use two persitence units. And it works now.

Thanks!
Andreas

Am 18.03.15 um 05:23 schrieb Felix Scheffer:

Hi Andreas,

I assume you have more than one persistence context. In this case you have
to add the @PersistenceContext annotation to your onSuccess() method.
Otherwise the system doesn't  know which persistence context it should use.

(The related code is in JpaInternalUtils.getEntityManager() and
in EntityManagerManagerImpl)

Hope that helps.

Felix

2015-03-17 11:16 GMT+01:00 Andreas Ernst <a...@ae-online.de>:

Hi,

i got a ejb with two entities.

All is working fine, but if i persist the entity, it got this error:

Unable to locate a single EntityManager. You must provide the persistence
unit name as defined in the persistence.xml using the @PersistenceContext
annotation.


   @Inject
   @PersistenceContext(unitName = "de.aeits_ERDA-CCIS-EJB_ejb_1.01PU")
   private EntityManager entityManager;

   @Log
   @CommitAfter
   Object onSuccess() {
     logger.log(Level.INFO, "erfolgreicher Login von {0}", user);
     try {
       Users users = entityManager.find(Users.class, user);
       logger.log(Level.INFO, "User {0}", user);
       users.setIp(requestGlobal.getHTTPServletRequest().getRemoteAddr());
//      entityManager.getTransaction().begin();
       entityManager.merge(users);
//      entityManager.getTransaction().commit();
     } catch (Exception e) {
       logger.log(Level.INFO, "Es ist ein Fehler aufgetreten: {0}", e);
     }
     return Index.class;
   }


If i remove the annotation @CommitAfter and do it with
entityManager.getTransaction().begin() and 
entityManager.getTransaction().commit(),
it works.

Any hints?

TIA
Andreas
--
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ae | Andreas Ernst | IT Spektrum
Postfach 5, 65612 Beselich
Schupbacher Str. 32, 65614 Beselich, Germany
Tel: +49-6484-91002 Fax: +49-6484-91003
a...@ae-online.de | www.ae-online.de
www.tachyon-online.de

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