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MQSeries.net Forum Index » IBM MQ Java / JMS » ClassCastException when retrieving QueueConnectionFactory fr

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JustinM
PostPosted: Thu Apr 11, 2002 12:38 am    Post subject: Reply with quote

Novice

Joined: 10 Apr 2002
Posts: 13
Hi

I am getting a ClassCastException when retrieving a QueueConnectionFactory bound to the JNDI tree. The class of the object returned is javax.naming.Reference. The code is as follows:

InitialContext initialContext = new InitialContext(env);
Context jmsContext = (Context)initialContext.lookup("jms");
queueConnectionFactory = (javax.jms.QueueConnectionFactory)jmsContext.lookup("CorrespondenceQCF");

Where env is a hashtable with the following environment variables:
PROVIDER_URL: iiop://localhost:900
INITIAL_CONTEXT_FACTORY:com.ibm.ejs.ns.jndi.CNInitialContextFactory

I have downloaded the latest MA88 pack and installed it.
I have tried using javax.rmi.PortableRemoteObject.narrow() on the object - still a ClassCastException

Any help would be appreciated

Thanks

Justin

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abmanesh
PostPosted: Thu Apr 11, 2002 4:58 am    Post subject: Reply with quote

Apprentice

Joined: 06 Nov 2001
Posts: 39
When working with persistent name server you can specify the context name with the provider url itself (iiop://localhost:900/jms ). Then when you obtain the Context try using the instance of InitialDirContext class.

Context jmsContext = new InitialDirContext(env);
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JustinM
PostPosted: Thu Apr 11, 2002 5:19 am    Post subject: Reply with quote

Novice

Joined: 10 Apr 2002
Posts: 13
Hi

Thanks for the reply.
I seem to have solved my own problem. For those of you that encounter a similar problem

Check your classpath !

http://216.239.35.100/search?q=cache:6j83QHncIEAC:www-4.ibm.com/software/webservers/appserv/whitepapers/was_mqseries.pdf+Classcastexception+javax.naming.Reference+JMS+lookup&hl=en

Cheers
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