/** Retrieve the Spring-managed Session for the current thread, if any. */
public Session currentSession() throws HibernateException {
Object value = TransactionSynchronizationManager.getResource(this.sessionFactory);
if (value instanceof Session) {
return (Session) value;
} else if (value instanceof SessionHolder) {
SessionHolder sessionHolder = (SessionHolder) value;
Session session = sessionHolder.getSession();
if (TransactionSynchronizationManager.isSynchronizationActive()
&& !sessionHolder.isSynchronizedWithTransaction()) {
TransactionSynchronizationManager.registerSynchronization(
new SpringSessionSynchronization(sessionHolder, this.sessionFactory));
sessionHolder.setSynchronizedWithTransaction(true);
// Switch to FlushMode.AUTO, as we have to assume a thread-bound Session
// with FlushMode.MANUAL, which needs to allow flushing within the transaction.
FlushMode flushMode = session.getFlushMode();
if (FlushMode.isManualFlushMode(flushMode)
&& !TransactionSynchronizationManager.isCurrentTransactionReadOnly()) {
session.setFlushMode(FlushMode.AUTO);
sessionHolder.setPreviousFlushMode(flushMode);
}
}
return session;
} else if (this.jtaSessionContext != null) {
Session session = this.jtaSessionContext.currentSession();
if (TransactionSynchronizationManager.isSynchronizationActive()) {
TransactionSynchronizationManager.registerSynchronization(
new SpringFlushSynchronization(session));
}
return session;
} else {
throw new HibernateException("No Session found for current thread");
}
}
private static FlushMode getFlushMode(String flushMode) {
if (flushMode == null) {
return null;
}
flushMode = flushMode.toUpperCase();
return FlushMode.parse(flushMode);
}
private static FlushMode convertFlushMode(Object object) {
if (object == null) {
return null;
}
if (object instanceof FlushMode) {
return (FlushMode) object;
}
return FlushMode.parse(String.valueOf(object));
}