What can I say? Thanks Sir for your valuable time. regards prasad chandrasekaran
I sense great sarcasm there, but Christian's response is pretty good. If you start a transaction and create a parent, then create children, and one of the children fails, you rollback the transaction and the parent object won't be created either. And that's not a Hibernate thing. That's a RDBMS thing. Hibernate just provides a nice interface into it.
An example would be (Please excuse any syntax or API errors, doing this one from memory):
try
{
Session session = SessionFactory.getSession();
Transaction tx = session.startTransaction();
Parent parent = new Parent();
<set values of Parent>
Child child = new Child();
<set values of Child>
parent.getChildren().add(child);
tx.commit();
}
catch(Exception e)
{
if( tx != null )
{
tx.rollback();
}
}
finally
{
session.close();
}If you haven't already done so, I would look into a SQL book. I found the following one quite helpful:
http://www.amazon.com/exec/obidos/tg/detail/-/0201703092/qid=1062203306/sr=8-3/ref=sr_8_3/103-7047765-0401466?v=glance&s=books&n=507846
Did that help you answer your question?
Thanks,
Patrick
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