ClassCastException looking up ConnectionFactory

[mfrost]

I'm trying to issue the following from my client app:

Context context = new InitialContext();
// Get the connection factory
System.out.println("ConnectionFactory class name: " + context.lookup("ConnectionFactory").getClass().getName());

QueueConnectionFactory queueFactory = (QueueConnectionFactory)context.lookup("ConnectionFactory");

I get a ClassCastException. The actual class that comes back is a javax.naming.Reference??

Inspecting my environment using the JNDIView MBean shows the following in both JNDI namespace and Global Namespace:

+- ConnectionFactory (class: org.jboss.mq.SpyConnectionFactory)

So why is the incorrect class being looked up?

I'm running jboss-3.2.1_tomcat-4.1.24 from the server/default folder.

Many thanks

[stephanenicoll]

from where are you running this code? Inside JBoss or from a remote client?

If remote, do not forget to add the jbossclient.jar in your classpath

[mfrost]

Yes i'm trying to run this from a remote client.

I have the following in my classpath:

jboss-client.jar
log4j.jar
jnp-client.jar
jboss-common-client.jar

my jndi properties are:

java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.provider.url=jnp://127.0.0.1:1099/
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces

Basically, the JNDI lookup finds the name "ConnectionFactory" but the returned class is javax.naming.Reference. If I use the JNDI API's to list all the name-class pairs it correctly returns (amongst other entries):

ConnectionFactory - org.jboss.mq.SpyConnectionFactory
XAConnectionFactory - org.jboss.mq.SpyXAConnectionFactory

I've tried looking up both ConnectionFactory and XAConnectionFactory but still ClassCastException.

I can't get any of the JBOSS JMS client examples to run because of this problem! Help!

Cheers

Mark

[stephanenicoll]

1/ Check that JMS starts fine (see the server.log of the default server)
2/ Here's a code snipet that runs fine on my 3.2.1

jndiContext = new InitialContext();
queueConnectionFactory = (QueueConnectionFactory) jndiContext.lookup("ConnectionFactory");
queue = (Queue) jndiContext.lookup(queueName);
queueConnection = queueConnectionFactory.createQueueConnection();
queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);

my jndi properties are :

java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces
java.naming.provider.url=127.0.0.1

try to put everything in the client directory in your classpath.

[mfrost]

Finally got it to work!

As you suggested I added jbossall-client.jar and it works fine now - phew!

Any ideas why this is the case? I could understand a ClassNotFoundException being raised if I didn't have the right CLASSPATH but actually a different class returned from the JNDI lookup - weird!

Maybe I just need to delve deeper into JNDI for an explanation.

Anyway - many thanks for your help.

Best regards

mark