Hello, I've been using CMP and auto generate pk feature with MySQL for sometime now. Things worked well until recently when I tried to use XA tx for my application (MySQL + xapool). When I invoke create() on my EntityBean, I got "IllegalArgumentException: object is not an instance of declaring class". Other methods seem to work flawlessly though.

The exception is really beyond me as I can't really see what went wrong:

------------------ start of log -------------------
2004-01-31 17:37:26,309 ERROR [org.jboss.ejb.plugins.LogInterceptor] TransactionRolledbackLocalException in method: public abstract psms.ejb.dispatch.DispatchLocal psms.ejb.dispatch.DispatchLocalHome.create(psms.ejb.dispatch.MutableDispatchIdentity) throws javax.ejb.CreateException, causedBy:
java.lang.IllegalArgumentException: object is not an instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.jboss.ejb.plugins.cmp.jdbc.keygen.JDBCMySQLCreateCommand.executeInsert(JDBCMySQLCreateCommand.java:75)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCAbstractCreateCommand.performInsert(JDBCAbstractCreateCommand.java:287)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCAbstractCreateCommand.execute(JDBCAbstractCreateCommand.java:138)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.createEntity(JDBCStoreManager.java:554)
at org.jboss.ejb.plugins.CMPPersistenceManager.createEntity(CMPPersistenceManager.java:208)

--------------- end of log --------------------------------

Now, I really don't know if it's JBoss (incl. the keygen plugin) problem, MySQL or XAPool. However, reverting the tx to local-tx, everything works fine. Any ideas are greatly appreciated. Please let me know if you guys need more info. Please advise!

Thank's!
Vincent