ClassCastException on Queue JNDI lookup

[zhensley2]

Hello,
I am getting a ClassCastException when trying to look up a Queue. I am getting the javax.naming.Reference type back instead of the javax.jms.Queue type.

I am looking up the following queue definition.

mbean code="org.jboss.mq.server.jmx.Queue"
name="jboss.mq.destination:service=Queue,name=POSLog"
depends optional-attribute-name="DestinationManager" jboss.mq:service=DestinationManager /depends
/mbean


the Exception is being generated when executing the following client code:

obj = (Queue) jndiContext.lookup("queue/POSLog");

and the jdni.properties file looks like:

java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.provider.url=jnp://fgrw60205.bscdev.net:1099
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces


thank you for your help.

[genman]

jdni.properties -> jndi.properties ? You can turn on debug and see if you're actually talking to JBoss.

[anand.g.verma]

Hi
I am also facing the same problem.
I am using samples given in the JBoss distribution as per the JBossMQWiki.
However when I use testQueue then I get ClassCastException and if I use queue A then I get Queue not bound exception.
==============================================
Here is my code:

Properties properties = new Properties();
properties.put("java.naming.factory.initial","org.jnp.interfaces.NamingContextFactory");
properties.put("java.naming.provider.url","jnp://localhost:1099");
properties.put("java.naming.factory.url.pkgs","org.jboss.naming:org.jnp.interfaces");
InitialContext ctx = new InitialContext(properties);
log.info("Looking up queueA");
Queue queue = (Queue) ctx.lookup("Queue/A");
=============================================
My jbossmq-destinations-service.xml

<depends optional-attribute-name="DestinationManager">jboss.mq:service=DestinationManager
<depends optional-attribute-name="SecurityManager">jboss.mq:service=SecurityManager
-1









<depends optional-attribute-name="DestinationManager">jboss.mq:service=DestinationManager

===============================================
Please let me know if this is incorrect and if yes then what needs to be done.

[darranl]

If you are getting a ClassCastException post the Exception stack trace and message.

[anand.g.verma]

Exception in thread "main" java.lang.ClassCastException: javax.naming.Reference
at QClient.main(QClient.java:33)

[anand.g.verma]

I found the reason for this. It has nothing to do with ClassCastException actually.

The JMS client was not able to connect to JBoss server hence I was not getting the Queue type object and thus the ClassCastException.

Putting jbossall-client.jar in the classpath solved the problem.

[darranl]

Yes the fact the ClassCastException mentions javax.naming.Reference is enough information to realise you had jars missing on your classpath.