NullPointerException from MDB

[nbhatia]

I am getting the following NullPointerException when deploying a war file containing an MDB:

ERROR [org.hornetq.ra.inflow.HornetQActivation] (jca-short-running-threads-threads - 1) Unable to reconnect org.hornetq.ra.inflow.HornetQActivationSpec(ra=org.hornetq.ra.HornetQResourceAdapter@20e2e869 destination=null destinationType=null ack=Auto-acknowledge durable=false clientID=null user=null maxSession=15): java.lang.NullPointerException

        at javax.naming.NameImpl.<init>(NameImpl.java:264) [:1.6.0_14]

        at javax.naming.CompositeName.<init>(CompositeName.java:214) [:1.6.0_14]

        at org.jboss.as.naming.util.NameParser.parse(NameParser.java:49)

        at org.jboss.as.naming.NamingContext.parseName(NamingContext.java:409)

        at org.jboss.as.naming.NamingContext.lookup(NamingContext.java:209)

        at javax.naming.InitialContext.lookup(InitialContext.java:392) [:1.6.0_14]

        at org.hornetq.ra.Util.lookup(Util.java:174) [hornetq-ra-2.2.7.Final.jar:]

        at org.hornetq.ra.inflow.HornetQActivation.setupDestination(HornetQActivation.java:462) [hornetq-ra-2.2.7.Final.jar:]

        at org.hornetq.ra.inflow.HornetQActivation.setup(HornetQActivation.java:283) [hornetq-ra-2.2.7.Final.jar:]

        at org.hornetq.ra.inflow.HornetQActivation.handleFailure(HornetQActivation.java:548) [hornetq-ra-2.2.7.Final.jar:]

        at org.hornetq.ra.inflow.HornetQActivation$SetupActivation.run(HornetQActivation.java:591) [hornetq-ra-2.2.7.Final.jar:]

        at org.jboss.jca.core.workmanager.WorkWrapper.run(WorkWrapper.java:212)

        at org.jboss.threads.SimpleDirectExecutor.execute(SimpleDirectExecutor.java:33)

        at org.jboss.threads.QueueExecutor.runTask(QueueExecutor.java:801)

        at org.jboss.threads.QueueExecutor.access$100(QueueExecutor.java:45)

        at org.jboss.threads.QueueExecutor$Worker.run(QueueExecutor.java:821)

        at java.lang.Thread.run(Thread.java:619) [:1.6.0_14]

        at org.jboss.threads.JBossThread.run(JBossThread.java:122)

The MDB has been declared as follows (mapped to jms/PerfQueue):

@MessageDriven(mappedName="jms/PerfQueue")

public class TextMessageListener implements MessageListener {

    ...

}

The queue has been declared as follows in standalone.xml:

<jms-queue name="PerfQueue">

    <entry name="jms/PerfQueue"/>

</jms-queue>

I can see in the console that the queue has been deployed correctly with the JNDI name of jms/PerfQueue. What am I missing? (I am using JBoss AS 7.0.2.)

Thanks.

Naresh

[jaikiran]

Naresh Bhatia wrote:

ERROR [org.hornetq.ra.inflow.HornetQActivation] (jca-short-running-threads-threads - 1) Unable to reconnect org.hornetq.ra.inflow.HornetQActivationSpec(ra=org.hornetq.ra.HornetQResourceAdapter@20e2e869 destination=null

Looks like you have setup the destination.

Naresh Bhatia wrote:

The MDB has been declared as follows (mapped to jms/PerfQueue):

@MessageDriven(mappedName="jms/PerfQueue")

public class TextMessageListener implements MessageListener {

    ...

}

We don't use the mappedName as the destination jndi name. See this example on how to setup the destination https://github.com/jbossas/jboss-as/blob/master/testsuite/integration/src/test/java/org/jboss/as/testsuite/integration/mdb/objectmessage/MDBAcceptingObjectMessage.java#L40

As for the NullPointerException being thrown (instead of a proper error message), I think there's already a JIRA for that.

[nbhatia]

That's really interesting! So JBoss does not understand mappedName and GlassFish does not understand the "destination" ActivationConfigProperty (I tried it). Any guidance on writing portable MDBs?

Thanks.

Naresh

[wolfc]

The short and honest answer is: there are no portable MDBs.

The EJB specification only defines the meaning of mapped-name as something vendor specific.

The JCA specification recommends the destination property for JMS activation specs.

Your best bet is to leave these values out of the MDB code and put it in the deployment descriptor.

[nbhatia]

Carlo, thanks for an honest answer.

Naresh