Hi!
using jbossas 4.0.5.ga-ejb3 and hibernate 3.2.

I keep getting nullPointer exception with this class. I have checked that entityManager is null.

same kind of injecting the PersistenceContext works fine with several other classes..

I have tried without unitName but we have several persistence units so that wont work.


Can anyone help me to find the cause?

package fi.logiasoftware.messageserver.services.backend;

import java.util.List;

import javax.ejb.Local;
import javax.ejb.Remote;
import javax.ejb.Stateless;
import javax.ejb.TransactionAttribute;
import javax.ejb.TransactionAttributeType;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import org.jboss.annotation.ejb.LocalBinding;
import org.jboss.annotation.ejb.RemoteBinding;

import fi.logiasoftware.messageserver.config.ActionException;
import fi.logiasoftware.messageserver.config.Destination;

@Stateless
@RemoteBinding(jndiBinding = "ActionExceptionHandling")
@LocalBinding(jndiBinding = "ActionExceptionHandlingLocal")
@Remote(ActionExceptionHandling.class)
@Local(ActionExceptionHandling.class)
@TransactionAttribute(TransactionAttributeType.REQUIRED)
public class ActionExceptionHandlingBean implements ActionExceptionHandling {

 @PersistenceContext(unitName = "MessageServer")
 private EntityManager entityManager;

 private ActionException ae;
 private List<ActionException> ActionExceptions;

 public void setActionException(String filename, Destination destination, String hash){
 ae = new ActionException();
 ae.setDestination(destination);
 ae.setFilename(filename);
 ae.setHash(hash);
 entityManager.persist(ae);
 }


 @SuppressWarnings("unchecked")
 public List<ActionException> getActionExceptions(){
 System.out.println("getActionExceptions ploo");

 if(entityManager != null) {
 ActionExceptions = entityManager.createQuery("from ActionException a order by a.id").getResultList();
 System.out.println("getActionExceptions loppuu");
 } else {
 System.out.println("entityManager on null");
 }

 return ActionExceptions;
 }

 public void removeActionException(ActionException a){
 entityManager.remove(a);
 }

}

<persistence-unit name="MessageServer" transaction-type="jta">

 <provider>org.hibernate.ejb.HibernatePersistence</provider>
 <jta-data-source>java:/MessageServicesDS</jta-data-source>

 <properties>
 <property name="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</property>
 <!-- property name="hibernate.hbm2ddl.auto" value="create"/ -->
 <property name="hibernate.session_factory_name" value="ServiceConfig"/>
 <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.JBossTransactionManagerLookup"/>
 <property name="hibernate.jdbc.use_get_generated_keys" value="true"/>
 <property name="hibernate.order_updates" value="true"/>
 <property name="hibernate.jdbc.batch_versioned_data" value="true"/>
 <property name="jta.UserTransaction" value="UserTransaction"/>
 <property name="hibernate.current_session_context_class" value="jta"/>
 <property name="hibernate.query.jpaql_strict_compliance" value="false"/>
 <property name="hibernate.show_sql" value="false"/>
 <property name="hibernate.format_sql" value="true"/>
 <property name="jboss.entity.manager.factory.jndi.name" value="java:/EntityManagerFactory"/>
 <property name="jboss.entity.manager.jndi.name" value="java:/EntityManager"/>
 <property name="hibernate.connection.release_mode" value="auto"/>
 <!-- property name="hibernate.cache.provider_class" value="org.hibernate.cache.OptimisticTreeCacheProvider"/ -->
 <!-- property name="hibernate.treecache.mbean.object_name" value="jboss.cache:service=EJB3EntityTreeCache"/ -->
 <!-- property name="hibernate.transaction.auto_close_session" value="true"/ -->
 <!-- property name="hibernate.cache.use_query_cache" value="true"/ -->
 </properties>

 <!-- property name="hibernate.ejb.cfgfile" value="/hibernate.cfg.xml"/ -->
 </persistence-unit>