POJO and persistence

Question

Hi *,
Maybe I'm trying something silly but anyway...
For various reasons I have (read 'would like to have') the following components in my ejb tier.
A message-driven bean which on reception of a message calls a singleton POJO which processes the data in the message and needs some persistent object in order to do so.
I thought that because my POJO is created by an application managed MDB, it will also be container managed, but it seems not since e.g. @PersistenceContext is not supported. Am I right?
No problem I thought, I'll use JNDI to lookup my persistence unit in the following way:
In the POJO:
InitialContext ic = new InitialContext();
EntityManager em = (EntityManager)ic.lookup("java:comp/env/persistence/Z-persistence-ejbPU");and in sun-ejb-jar.xml:
<sun-ejb-jar>
<enterprise-beans>
<persistence-unit-ref>
<persistence-unit-ref-name>persistence/Z-persistence-ejbPU</persistence-unit-ref-name>
<persistence-unit-name>Z-persistence-ejbPU</persistence-unit-name>
</persistence-unit-ref>
</enterprise-beans>
</sun-ejb-jar>But this gives me following error:
file:/C:/Sun/AppServer/domains/domain1/applications/j2ee-apps/Z-persistence/Z-persistence-ejb_jar/-Z-persistence-ejbPU login successful
javax.naming.NameNotFoundException: No object bound to name java:comp/env/persistence/Z-persistence-ejbPUSo it seems that the PU is not bound to the JNDI context. However, my application uses other entitties which are created and persisted in a session bean and this works.
Can somebody provide me with a hint of what I'm missing?
Best regards,
Vaak

Answer 1

Hello,
I am trying the same thing on JBoss 4.2.2,but I am also getting same errori.e the persistent context is not bound to the JNDI name.
The ejb-jar file:
<message-driven>
     <ejb-name>MessageReceiver</ejb-name>
     <ejb-class>com.ecebs.hops.messaging.MessageReceiver</ejb-class>
     <activation-config>
          <activation-config-property>
          <activation-config-property-name>destination</activation-config-property-name>
          <activation-config-property-value>queue/hopsLM2/messaging/msgQueue</activation-config-property-value>
          </activation-config-property>
          <activation-config-property>
          <activation-config-property-name>destinationType</activation-config-property-name>
          <activation-config-property-value>javax.jms.Queue</activation-config-property-value>
          </activation-config-property>
     </activation-config>
     <persistence-context-ref>
          <persistence-context-ref-name>hopsLM/messaging/entity_manager</persistence-context-ref-name>
          <persistence-unit-name>hopsMessagingLM</persistence-unit-name>
     </persistence-context-ref>
</message-driven>
The error thrown:
09:38:13,700 ERROR [STDERR] javax.naming.NameNotFoundException: hopsLM not bound
09:38:13,700 ERROR [STDERR]      at org.jnp.server.NamingServer.getBinding(NamingServer.java:529)
09:38:13,700 ERROR [STDERR]      at org.jnp.server.NamingServer.getBinding(NamingServer.java:537)
09:38:13,700 ERROR [STDERR]      at org.jnp.server.NamingServer.getObject(NamingServer.java:543)
09:38:13,700 ERROR [STDERR]      at org.jnp.server.NamingServer.lookup(NamingServer.java:267)
09:38:13,700 ERROR [STDERR]      at org.jnp.server.NamingServer.lookup(NamingServer.java:270)
If you have resolved it,please suggest what mistakes I have done.
Thanks and Regards,
Yugant Shah.