ClassCastException on SpyXAConnection.createSession

[gquintana]

Hello,

Here is what I wrote in a MDB Bean for JBoss 4.0:
InitialContext jndiContext=new InitialContext();
XAConnectionFactory xaConnectionFactory=(XAConnectionFactory)
jndiContext.lookup("java:comp/env/jms/XAConnectionFactory");
Queue queue=(Queue)jndiContext.lookup("java:comp/env/jms/Queue");
XAConnection xaConnection=xaConnectionFactory.createXAConnection();
Session session=
xaConnection.createSession(true,Session.AUTO_ACKNOWLEDGE);

With
java:comp/env/jms/XAConnectionFactory => XAConnectionFactory
java:comp/env/jms/Queue => queue/MyQueue

Simple no? But I get a ClassCastException:
java.lang.ClassCastException
at org.jboss.mq.SpyXAConnection.createSession(SpyXAConnection.java:72)
at MyBean.onMessage(MyBean.java:xx)

Who can tell me what's wrong?
Gerald

[adrian.brock]

You do not use XAConnections directly and you certainly don't use them that way.