You can "turn off" the disassociating UPDATE be using a bidirectional
association with readonly="true" for the collection mapping.
jiesheng zhang
<[EMAIL PROTECTED]> To: [EMAIL PROTECTED]
Sent by: cc:
[EMAIL PROTECTED] Subject: [Hibernate] hibernate set
foreign key to null before issue
eforge.net deletion?
31/01/03 01:50 AM
suppose I have two table
create table A (
id integer primary key
);
create table B (
id integer primary key,
idA integer not null,
constraint FK_B_TO_A foreign key (idA) references A
(id) on delete cascade
);
Here suppose A to B is a one-to-many association and
I did not ask the hibernate to do the cascade in the
mapping file since I do it in the database by
specifying "on delete cascade"; I think it will be
effecient to let the database to do the cascading
deletion. (Am I right here?).
If I call Session.delete(A), the Session will issue
these two queries:
1. update B set idA = null where idA =?
2. delete from A where id = ?
Apparently hibernate wants to dissociate B from A
before it issues the deletion.
How can I turn this off?
Or any alternative solution?
I am trying to convince my CTO to use hibernate in a
project. However I promise a demo to him sometime
today. Any help is really appreciated.
jason
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