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Horrigan
 Post subject: How to save a complex object
PostPosted: Wed Jan 14, 2004 9:31 am 
Newbie

Joined: Fri Jan 09, 2004 9:55 am
Posts: 10
Location: Rutland, UK
Dear all

I have created an object as follows:

Code:
Business
   +-- Contact
          +-- Address
          +-- TelephoneNumber


I want to be able to update just the contact details (e.g. forename), but don't know how to do that without updating the whole complex object.

If anyone could shed some light on what route I need to take I would be very grateful,

nick.
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michael
 Post subject:
PostPosted: Wed Jan 14, 2004 9:34 am 
Hibernate Team
Hibernate Team

Joined: Tue Sep 09, 2003 2:10 pm
Posts: 3246
Location: Passau, Germany
Code:
Session session = sessionFactory.openSession();
Buisness buisness = session.load(Business.class, id);
buisness.getContact().getAdresss().setStreet("Something");
session.flush();
session.close();
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Horrigan
 Post subject: Getting "Object already associated with this id"
PostPosted: Thu Jan 15, 2004 5:16 am 
Newbie

Joined: Fri Jan 09, 2004 9:55 am
Posts: 10
Location: Rutland, UK
I'm using struts and so, trying to implement your solution, I've got the desired object back from the session (using inbuilt functionality), altered it to my requirements and then tried to pass it back to the save method.

All works well until it finds an 'old' version of the object already in the session (I assume from when I got the object back in the first place).

I've hit this problem from two seperate paths now and I really need to find a solution in order to proceed with my project.

I'm sure I cannot be the only person who has had this problem.

Any help would be gratefully received.

Nick.
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greg_barton
 Post subject:
PostPosted: Thu Jan 15, 2004 5:29 am 
Pro
Pro

Joined: Tue Aug 26, 2003 1:24 pm
Posts: 213
Location: Richardson, TX
Use Session.update() or Session.saveOrUpdate() with an existing object.
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Horrigan
 Post subject:
PostPosted: Thu Jan 15, 2004 5:33 am 
Newbie

Joined: Fri Jan 09, 2004 9:55 am
Posts: 10
Location: Rutland, UK
I am using saveOrUpdate, that is where the error popped up.
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greg_barton
 Post subject:
PostPosted: Thu Jan 15, 2004 5:35 am 
Pro
Pro

Joined: Tue Aug 26, 2003 1:24 pm
Posts: 213
Location: Richardson, TX
Sigh...ignore me. It's 4am here. :P
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michael
 Post subject:
PostPosted: Thu Jan 15, 2004 9:53 am 
Hibernate Team
Hibernate Team

Joined: Tue Sep 09, 2003 2:10 pm
Posts: 3246
Location: Passau, Germany
If you have the object allready associated with the session, you don't need to do a saveOrUpdate, automatic dirty checking should automatically save the object on flush
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