Block on Receive.

[garandi]

The receiver block and I don't get any out put.

TextMessage msg =(TextMessage) qReceiver.receiv();

Question: What should I do in order for the receiver not to block.

This how my user-service.xml looks like.
I can deploy without getting any exception.
Thank you
Garandi

5150
2048
C:\\JBossLog
queue/testQeueu
java:/ConnectionFactory
True
jboss.mq:service=DestinationManager
jboss.mq:service=InvocationLayer,type=JVM
jboss.mq.destination:service=Queue,name=listenerQueue

[stephanenicoll]

>Question: What should I do in order for the receiver not to block.

calling the receiveNoWait() method on your QueueReceiver.

Regards,

Stephane

[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

[stephanenicoll]

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

[stephanenicoll]

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

[stephanenicoll]

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?