[jboss-user] [EJB] - EntityManager in jmx.MBean
I need to use the EntityManager inside an JMX MBean
| <?xml version="1.0" encoding="UTF-8" ?>
| <persistence>
| <persistence-unit name="bafoeg3sked">
| <jta-data-source>java:/bafoeg21DS</jta-data-source>
| <properties>
| <property name="hibernate.hbm2ddl.auto"
value="update"/>
|
| <property name="jboss.entity.manager.jndi.name"
value="java:/bafoeg3EntityManagerSKED" />
| </properties>
| </persistence-unit>
| </persistence>
|
| Context ctx;
| try {
| ctx = (Context) new InitialContext();
| em = (EntityManager) ctx.lookup("java:/bafoeg3EntityManagerSKED");
| } catch (NamingException e) {
| log.error(e);
| }
|
At this point the EntityManager is not null
org.jboss.ejb3.entity.TransactionScopedEntityManager@7663a6
However at
| Query query = em.createNamedQuery("findGruppeByValue");
|
I get the following exception:
| java.lang.NullPointerException
| at org.jboss.ejb3.entity.ManagedEntityManagerFactory.getNonTxEntityManag
| er(ManagedEntityManagerFactory.java:59)
| at org.jboss.ejb3.entity.ManagedEntityManagerFactory.getTransactionScope
| dEntityManager(ManagedEntityManagerFactory.java:164)
| at org.jboss.ejb3.entity.TransactionScopedEntityManager.createNamedQuery
| (TransactionScopedEntityManager.java:139)
| at bafoeg21.scheduler.util.SchedulerConfig.buildSkedStore(SchedulerConfi
| g.java:522)
|
Any ideas what might be the cause?
Thanks,
Hans
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