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 Post subject: Foriegn Key References Chapter one
PostPosted: Sun May 18, 2008 8:30 am 
Newbie

Joined: Sun May 18, 2008 8:21 am
Posts: 1
The colume nextMessage is foregin key references id and this has casecade as all.

If i delete one message than all the references should be deleated. But this is not happening.



<many-to-one
name="nextMessage"
cascade="all"
column="NEXT_MESSAGE_ID"
foreign-key="FK_NEXT_MESSAGE"/>

Example
-------------------------
// ############################################################################

// First unit of work
Session session = HibernateUtil.getSessionFactory().openSession();
Transaction tx = session.beginTransaction();

Message parent = new Message("Parent");
parent.setText("I am Parent");
Message child1 = new Message("child1");
child1.setText("I am child1");
Message child2 = new Message("child2");
child2.setText("I am child2");

parent.setNextMessage(child1);
child1.setNextMessage(child2);

session.save(parent);
tx.commit();
session.close();

// Shutting down the application
HibernateUtil.shutdown();
}


-----------------------------------------------------

If I delete the parent. Than all the childs should go. because they have foreign key references

But this is not happening. Any clue?

Thanks in Advance
Balaji


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 Post subject: cascade all
PostPosted: Thu May 22, 2008 7:32 am 
Newbie

Joined: Thu May 22, 2008 6:45 am
Posts: 2
Location: Bangalore
Hi Balaji,

You are defining cascade=all in wrong place.
If you are deleting the record in the main table that is the talbe
where NEXT_MESSAGE is primary key.
There you might have defined one-to-many there you need to specify this attribute then it will work proper i hope.


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