Looking for example for how to create a JMS queue from an a

[rcktan]

Can anyone point me to an example of how to create a queue dynamically from an application? The doc mentions using the Destination Manager's MBean createQueue method -- but there was no example for how this is actually invoked from an application.

I tried the following but got a null pointer exception:

try {
new DestinationManager().createQueue ("Rich", "queue/MyDynamicQ");
} catch (Exception e) {
e.printStackTrace();
}

[adrian.brock]

You do it through the MBeanServer.

MBeanServer server = (MBeanServer) MBeanServerFactory.findMBeanServer().get(0);
server.invoke
(
new ObjectName("jboss.mq:service=DestinationManager"),
"createQueue",
new Object[] { "MyDynamicQ" },
new String[] {String.class.getName() }
);

Regards,
Adrian

[schoeto]

I tried this example and I could not get it to work. When I do any of the following I get an ArrayList with 0 elements.

ArrayList servers = MBeanServerFactory.findMBeanServer(null);

ArrayList servers = MBeanServerFactory.findMBeanServer("");

or

ArrayList servers = MBeanServerFactory.findMBeanServer((String)properties.get("java.naming.provider.url"));

My JBoss instance is running on another machine. Do I need to use JNDI to look this up?

here's my code:

try {
ArrayList servers = MBeanServerFactory.findMBeanServer();
if (servers==null) {
System.out.println("No MBean servers found...");
} else {
System.out.println("server count: "+servers.size());
if (servers.size()>0) {
MBeanServer server = (MBeanServer)servers.get(0);
server.invoke (
new ObjectName("jboss.mq:service=DestinationManager"),
"createQueue",
new Object[] { "MyDynamicQ" },
new String[] {String.class.getName() }
);
}
}

Regards,
Tony Schoenbachler

[adrian.brock]

you need to use a jmx connector or adaptor.

Regards,
Adrian