Hi, I'm new to hibernate and have designed my application around the thought that hibernate is only going to commit dirty data when I tell it to (flush/SaveOrUpdate). In the scenario below, I want it to save the changes made to itemB, but not save the changes made to itemA. I have recently read that commit calls flush, which means my itemA would be saved even though I don't want it to be. Is there another way I should be doing this? Or do I have to wait until the session is closed before I add new subitems to an object. Perhaps if I change the flush mode?

Sorry, I'm a bit of a newb


Code between sessionFactory.openSession() and session.close():

ISession session = sessionFactory.openSession();

MyPersistantItem itemB = m_session.Get(type, 2);
itemB.Name = "Changed";

MyPersistantItem itemA = m_session.Get(type, 1);
itemA.SubItems(new MyPersistantItem2());
itemA.Name = "Also changed";

ITransaction tx=null;
try
{
tx = session.BeginTransaction();
session.SaveOrUpdate(itemB);
tx.Commit();
}
catch (Exception ex)
{
if (tx!=null) tx.Rollback();
throw ex;
}

session.close();

Once an entity has 'touched' the Session, Hibernate will handle updating the object. If you don't want this, you can always call an evict, which will detach the entity from the Hibernate Session.