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Many-to-many connection table with additional columns

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emilSverige

Post subject: Many-to-many connection table with additional columns

Posted: Fri May 19, 2006 5:32 am

Beginner

Joined: Tue Nov 22, 2005 5:33 am
Posts: 31

I have two classes, joined together as a many-to-many relation. I want to add a few columns to the connection table, so that the DB schema looks like this:

-------------- ---------------------- ---------------
| TABLE1 |---- | TABLE1_TABLE2 |---| TABLE2 |
| id | | table1_id | | id |
-------------- | table2_id | ----------------
| extracolumn1 |
| extracolumn2 |
---------------------

Is there a simple way to acheive this with hibernate? Of course I want to be able to set the values of the additional columns using hibernate.

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emilSverige

Post subject:

Posted: Fri May 19, 2006 5:51 am

Beginner

Joined: Tue Nov 22, 2005 5:33 am
Posts: 31

Didn't work the way I thought, trying to attach an image instead...

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kaisor

Post subject:

Posted: Fri May 19, 2006 11:03 am

Newbie

Joined: Tue Jan 24, 2006 12:04 pm
Posts: 12

use composite-element

my example is working fine (save-update) except that the relationtable is not updated on deleting.

see
http://forum.hibernate.org/viewtopic.php?t=959685

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