Creating a queue programmatically via a URL

tejas Oct 22, 2002 9:24 AM

I have tried the folloeing code snippet to create a queue in an application:

String method = "newQueue";
String destName = "myCreated";

String action = "action=" + method + "?action=" + method + "&param0%2Bjava.lang.String=" + destName;
String arg = "/InvokeAction//JBossMQ%3Aservice%3DServer" + "/" + action;
URL url = new URL("http", "localhost", 8082, arg);

HttpURLConnection con = (HttpURLConnection)url.openConnection();
con.connect();

When I run this code, the queue doesn't get created. When the use the generated URL directly in the browser, I get the following message:

459 Instance Not Found

Unable to get Object Definition for [JBossMQ:service=Server]

What is wrong here? I am using jboss-3.0.0_tomcat-4.0.3

thanks
Tejasvi.

1. Re: Creating a queue programmatically via a URL

adrian.brock Oct 22, 2002 7:29 PM (in response to tejas)

Are you sure it isn't jboss.mq instead of JBossMQ?

try http://localhost:8082 to view the MBeans.

Regards,
Adrian
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2. Re: Creating a queue programmatically via a URL

tejas Oct 24, 2002 2:12 AM (in response to tejas)

Hi Adrian,

you're right about the way to specify the service name.

The right url turned out to be something like:

http://localhost:8082/InvokeAction//jboss.mq.destination:service=DestinationManager/action=createQueue?action=createQueue&param0%2Bjava.lang.String=myCreated

Some more thoughts:
The queue that is created by this process is not persistent across server restarts. A way to do this would be to write directly into the jboss config file jbossmq-destinations-service.xml This would be useful if u have a queue per user and a new user has been added today.

I would like to know if there are performance bottlenecks due to creation of large number of queues in the app server (like creating and breaking db connections)

thnx
Tejasvi.
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