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1. Re: Block on Receive.
stephanenicoll Sep 13, 2003 1:41 AM (in response to garandi)>Question: What should I do in order for the receiver not to block.
calling the receiveNoWait() method on your QueueReceiver.
Regards,
Stephane -
2. Re: Block on Receive.
garandi Sep 13, 2003 8:03 AM (in response to garandi)Thank you Stephane, but when call receiveNoWait() I get a null pointer exception, which tells me that it did not received the msg.
I guess my user-service.xml has problem, although when I start jboss it DOES NOT complains.
QueueSenderExample.java and QueueReceiverExample.java are both in a package called examples. and the path is c:\example.QueueSenderExample.java and same is for QueueReceiverExample.java and this is how first part of my user-serive.xml file looks like.
It is almost 3 days that I am trying to run a JMS example but I fail, so any help will be appreciated.
Thannk you in advance.
Garandi -
3. Re: Block on Receive.
stephanenicoll Sep 15, 2003 1:21 AM (in response to garandi)Garandi,
When using a method/API you don't know you better read the Javadoc first ;-)
receiveNoWait() will not block. If a message is available, it will be retrurned to you. If no message is matching your criterias( that is the queue, a selector if any, etc ...) 'null' is returned.
The nullpointerexception you get is simply because you forgot to test wether the method returns you a message or not.
Now, if you are sure you have a message in this queue this might be the problem. Do you know the jmx-console? It allows you to manage your Jboss instance, see http://yourhost:8080/jmx-console
You'll see namely the jboss.mq.destinations domain cotaininsg all your declared queue.
you user service has definitely a problem. Why do you define a QueueManager? What version of JBoss are you running? Yo decalre a queue Named QueueReceiverExample (is it the purpose), put that definition in a xxxx-service.xml (where xxxx can be user but it's not mandatory)
<depends optional-attribute-name="DestinationManager">jboss.mq:service=DestinationManager
Regards,
Stephane -
4. Re: Block on Receive.
stephanenicoll Sep 15, 2003 1:24 AM (in response to garandi)One more thing. Do not mix client/server components. If your QueueReceiverExample is a regular, stand alone java application, it' could be anytwhere, provided you have the jbossall-client.jar in your classpath (that one is in $JBOSS_HOME/client)
Please provide more details about what you are trying to achieve.
Regards,
Stephane -
5. Re: Block on Receive.
stephanenicoll Sep 15, 2003 9:07 AM (in response to garandi)Uh uh you're the same guy. So you should already have this code snippet ... Let's summarize your problem in one thread, will you?