Hi, i am a dude about transaction, the next code:

Session session = getSessionFactory().openSession();
Transaction tx = session.beginTransaction();
Message message = new Message("Hello World");
session.save(message);
tx.commit();
session.close();

generate:

insert into MESSAGES (MESSAGE_ID, MESSAGE_TEXT, NEXT_MESSAGE_ID)
values (1, 'Hello World', null)

but

Session session = getSessionFactory().openSession();
Transaction tx = session.beginTransaction();
Message message = new Message("Hello World");
session.save(message);
message.setText("22222")
tx.commit();
session.close();

generate:

insert into MESSAGES (MESSAGE_ID, MESSAGE_TEXT, NEXT_MESSAGE_ID)
values (1, '22222', null)


why happen this?

Because you have commit after you put "2222" string. So, hibernate work in deatched mode, transient mode and persistent mode. If your object travelling in transient, any changes can modify it´s state to be persistent.

Ok, thanks, then, how check in what mode is hibernate and/or object?