Does setJMSPriority() actually do anything?

[homerlex]

JBoss 4.2.1.GA with JBossMQ.

I have a stateless session bean that puts a bunch of messages on the JMS queue. It is setting the priority of each message (setJMSPriority) to various ints from 0-10. However, the consumer of the message is getting the messages in the same order that they are put on the queue regardless of priority. Am I missing something here? Shouldn't the higher priority messages come off the queue first?

[homerlex]

Hmm, I'm looking at the messages in the JMX Console and they all have a priority of 4 so it seems that setJMSPriority is not actually setting the priority.

The section of code setting the priority looks like this:
// priority is set to an int in code above the following:
ObjectMessage objMsg = outboundSession.createObjectMessage(jmsMsg);
objMsg.setJMSPriority(priority);
msgSender.send(objMsg);

[homerlex]

OK - I found that using setPriority on the MessageProducer does the job. Is the "proper" way to do it? Does setJMSPriority() on ObjectMessage actually do anything?

[adrian.brock]

No, it's an FAQ, read the spec.