Sending message from Session Bean

[bartvanriel]

Hi,

I'm trying to send a message to a queue from a session bean. The code in the session bean is:

Context initial = new InitialContext();
....
QueueConnectionFactory factory = (QueueConnectionFactory)initial.lookup("ConnectionFactory");

Queue queue = (Queue)initial.lookup("java:comp/env/jms/MyQueue");
....

The jndi-name of the queue is "test/qestQueue" (this is one of the preconfigured ones in the JBoss 3.04 download).

Now here's the strange thing: from a standalone client, I can send messages fine (I have a MDB listening to the queue/testQueue queue and it reacts OK). From the session bean, the lookup of the queue throws a NullPointerException, "could not dereference object". Some fumbling with the 'looked up' name removes this error, but then a NamingException "queue not bound" is thrown.

I'm sure it has something to do with entering the correct <resource-ref> info in ejb-jar.xml and jboss.xml. But what should I enter where, and how should I call the queue from the session bean?

Thanx,
Bart van Riel,
The Netherlands.

[frito]

Hi,

your jboss.xml must have similar entries like this if you want to use JMS as a managed resource:
[pre]
<resource-manager>
<res-name>managedQueueConnectionFactory</res-name>
<res-jndi-name>java:JmsXA</res-jndi-name>
</resource-manager>
<resource-manager>
<res-name>managedQueue</res-name>
<res-jndi-name>queue/myQueue</res-jndi-name>
</resource-manager>
[/pre]
This is a simple mapping of the originial jndi namespace to the component namespace (managed this time).

You must use component namespace for lookup otherwise you will get the resource, but not managed.
[pre]
QueueConnectionFactory queueConnectionFactory =
(QueueConnectionFactory) jndiContext.lookup("java:comp/env/managedQueueConnectionFactory");
Queue queue = (Queue) jndiContext.lookup("java:comp/env/managedQueue");
[/pre]

Regards,

Frito