Hi all,

I hope, this isn't obvious, as I've tried to solve this by myself:

I get the following exception:

org.hibernate.TransactionException: could not register synchronization
at org.hibernate.transaction.JTATransaction.registerSynchronization(JTATransaction.java:309)
at org.hibernate.context.ThreadLocalSessionContext.currentSession(ThreadLocalSessionContext.java:78)
at org.hibernate.impl.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:506)
.
.
.
at java.lang.Thread.run(Thread.java:613)
Caused by: java.lang.NullPointerException
at org.hibernate.transaction.JTATransaction.registerSynchronization(JTATransaction.java:306)

in my webapp. AS is resin 3.0.16. I had no problems whatsoever with resin & hibernate 2.x but I'm porting to 3.1 right now. I traced with my debugger and have the following observation:
In registerSynchronization, line 306
getTransactionManager().getTransaction().registerSynchronization(sync);

getTransactionManager() returns an ImplClass from Resin and getTransaction() obviously returns null for the NPE. I have seen the creation of the Transaction in Hibernate, but I'm stuck here - should this Transaction be synched with a Transaction from Resin that isn't there? Is this perhaps a Bug in the Impl of the TransactionManager in Resin?

I have the following config:

<property name="transaction.factory_class">org.hibernate.transaction.JTATransactionFactory</property>
<property name="hibernate.current_session_context_class">org.hibernate.context.ThreadLocalSessionContext</property>
<property name="transaction.manager_lookup_class">org.hibernate.transaction.ResinTransactionManagerLookup</property>


Any help is appreciated!

Tia,

Jan

Some more info:

Getting the Transaction from JNDI/Resin obviously works:

2005-12-26 20:07:36,904 [resin-tcp-connection-*:8080-3] DEBUG org.hibernate.transaction.JTATransaction - Looking for UserTransaction under: java:comp/UserTransaction
2005-12-26 20:07:36,907 [resin-tcp-connection-*:8080-3] DEBUG org.hibernate.transaction.JTATransaction - Obtained UserTransaction

Jan

Did you ever find a solution to this problem - I just tried the same thing with Resin 3.1 and got the same error:

org.hibernate.TransactionException: could not register synchronization
at org.hibernate.transaction.JTATransaction.registerSynchronization(JTATransaction.java:309)
at org.hibernate.context.ThreadLocalSessionContext.currentSession(ThreadLocalSessionContext.java:78)

Caused by: java.lang.NullPointerException
at org.hibernate.transaction.JTATransaction.registerSynchronization(JTATransaction.java:306)


Thanks,
-Mike

I just ran into this problem before seeing this thread, and posted another topic:

http://forum.hibernate.org/viewtopic.php?t=991988