update id

Anacron · **Posted:** Mon Dec 27, 2004 9:13 am

Hibernate version: 2.7c

Name and version of the database you are using: Sybase Anywere 9.02

It's possible to update id of a persistent object:

session s;

...

// do this line update the id?
s.upadate(bean, newId);

...

emmanuel · **Posted:** Mon Dec 27, 2004 9:47 am

Anacron · **Posted:** Mon Dec 27, 2004 10:40 am

anthony · **Posted:** Mon Dec 27, 2004 10:43 am

what you can do is delete the "old" object, create a new one with the new id (should be assigned id) and have a deep copy.

Anyway it isn't a solution, id cannot, by nature, be updated.

emmanuel · **Posted:** Mon Dec 27, 2004 10:57 am

That's why id must not be a natural key. Go DBAs go!

garpinc · **Joined:** Thu Sep 09, 2004 6:46 pm **Posts:** 96

Is there a simple api to do deep copy in hibernate3 yet?

gavin · **Posted:** Mon Mar 28, 2005 2:24 pm

Sure. SessionFactory.getClassMetadata().

It is trivial to implement whatever you think deepCopy() should do. (Everyone has a different definition of deepCopy(), of course.)

garpinc · **Joined:** Thu Sep 09, 2004 6:46 pm **Posts:** 96

TheObject newObject = deepCopy(oldObject);

where oldObject has i.e: id=4
and new object has id=null until persisted.

oldObject has children objects with the oldObject Id relating to them and on persisting the child objects with inherit the new id from the parent.

Is there a way to do this?