I have a question about the transactions in Hibernate that the documentation was not able to answer

Suppose I have a code like the one given below

Session session = HibernateUtil.getSessionFactory().getCurrentSession();

Event theEvent = new Event();
theEvent.setTitle(title);
theEvent.setDate(theDate);

session.save(theEvent);


Suppose I did NOT explicitly say session.beginTransaction() and session.getTransaction().commit(); or flush(). When would the session.save() take effect (persist to the database)?

In the documentation it says all hibernate actions happen within a transaction. Does this mean hibernate would automatically start a transaction even if you do not explictly declare one (as is the case in pseudo-code given above)

Thanks much
DuKot

Looks like I will get a runtime error if I do not explicitly start a transaction.

Correct. The session.save(theEvent) must happen within a transaction. The database will not be modified until the transaction commit however. The session.save() call ony prepares the modifications, while the transaction commit takes those modifications and makes them happen in the database, but the session.save() call still has to have an open transaction to work with.