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Child deletion for dummies

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maxabbr

Post subject: Child deletion for dummies

Posted: Tue Sep 25, 2007 9:21 am

Newbie

Joined: Mon Sep 17, 2007 1:35 pm
Posts: 2

A newbe question, but I didn't found the response in the forum nor the docs.

Supose following:

Code:

Table "Person"
+Id
+Name
+IdAddress (allow null)

Table "Meeting"
+Id
+Date
+IdAddress (allow null)

Table "Address"
+Id
+Street

So the table "Address" is referenced by other two (Address.Id -> Person.IdAddress, Address.Id -> Meeting.IdAddress).

I would like to do something like that:

Code:

Person p1 = ... 'retrieve from database
p1.IdAdress = null
mysession.flush()

This should delete the date in table "Address". I try to use "all-delete-orphan" in the association xml file but it doesn't work. NHibernate don't do it?

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padlewski

Post subject:

Posted: Tue Sep 25, 2007 11:51 am

Beginner

Joined: Tue Sep 14, 2004 1:03 pm
Posts: 33
Location: Calgary, Alberta Canada

Code:

Person p1 = session.get(personID);
p1.IdAddress = null;
session.Update(p1);

You have to update the persistent instance to the database.

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