session = sessionHolder.getValidatedSession();
if (session != null) {
logger.debug("Registering JTA transaction synchronization for existing Hibernate Session");
sessionHolder.addSession(jtaTx, session);
jtaTx.registerSynchronization(
new SpringJtaSynchronizationAdapter(
new SpringSessionSynchronization(sessionHolder, sessionFactory, jdbcExceptionTranslator, false),
jtaTm));
sessionHolder.setSynchronizedWithTransaction(true);
// Switch to FlushMode.AUTO, as we have to assume a thread-bound Session
// with FlushMode.NEVER, which needs to allow flushing within the transaction.