JTA and Hibernate integration

Hi

I am checking if it is possible to integrate Hibernate's JTA TransactionFactory to lookup/follow GemFire's transaction manager as JTA provider.

I am trying to execute a set of operations as described below as a part of function execution.

I want myregion.put &  factory.getCurrentSession().update(...) to be part of same underlying JTA Transaction that is started by using GemFire as JTA Provider

try{
    Context ctx = Cache.getJNDIContext();
    UserTransaction tx = (UserTransaction)ctx.lookup("java:/UserTransaction");
                                tx.begin();    // Do some work    factory.getCurrentSession().update(...);    myregion.put(...);    tx.commit();}catch (RuntimeException e) {    tx.rollback();    throw e; // or display error message}

more details can be found here under Transaction Demarcation with JTA : https://community.jboss.org/wiki/SessionsAndTransactions

After tx.commit();, I do not see hibernate applying changes to database.

I have provided system property as below, as it is suggested in another thread, after which Hibernate is able to locate transaction in JNDI

System.setProperty(Context.INITIAL_CONTEXT_FACTORY, "com.gemstone.gemfire.internal.jndi.InitialContextFactoryImpl");

This is GemFire 6.6.3 and Hibernate has its own database connection pool.

There are no JNDI bindings declared in cache.xml

I had to add a GemFireTransactionManagerLookup class as below to be provided in hibernate's hibernate.transaction.manager_lookup_class element

import org.hibernate.HibernateException;

import org.hibernate.transaction.TransactionManagerLookup;

import javax.transaction.Transaction;

import javax.transaction.TransactionManager;

import java.util.Properties;

public class CGemFireTransactionManagerLookup implements TransactionManagerLookup {

     @Override

     public TransactionManager getTransactionManager(Properties properties) throws HibernateException {

          return com.gemstone.gemfire.internal.jta.TransactionManagerImpl.getTransactionManager();

     }

     @Override

     public String getUserTransactionName() {

          return "java:/UserTransaction";

     }

     @Override

     public Object getTransactionIdentifier(Transaction transaction) {

          return transaction;

     }

}

hibernate cfg settings

  <property name="jta.UserTransaction">java:/UserTransaction</property>

  <property name="hibernate.current_session_context_class">jta</property>

  <property name="hibernate.transaction.factory_class">org.hibernate.transaction.JTATransactionFactory</property>

  <property name="hibernate.transaction.manager_lookup_class">CGemFireTransactionManagerLookup</property>

Am I missing something here?

thanks