Spring Hibernate getCurrentSession() when there's no session?

Question

All in the title I'm confused with how to use sessionFactory.getCurrentSession() .

In my web-app, multi-threads are created to save messages in the DB, and on creating of each thread, I never used openSession() method, all of the Daos use getCurrentSession() . And till now it's working fine.

And there's no CurrentSessionContext configured. So does hibernate generate a new session for this thread, if not how does this getCurrentSession work ?

UPDATE

Yes I'm using Spring 3.1.

Tomcat6 (as plugin in Eclipse and real server on a Linux machine, the app works on both server)

Answer 1

The Spring HibernateTransactionManager binds a current session to the active transaction, allowing getCurrentSession() to return the session associated to the Spring transaction in progress:

PlatformTransactionManager implementation for a single Hibernate SessionFactory. Binds a Hibernate Session from the specified factory to the thread, potentially allowing for one thread-bound Session per factory. SessionFactory.getCurrentSession() is required for Hibernate access code that needs to support this transaction handling mechanism, with the SessionFactory being configured with SpringSessionContext.