Hibernate Community • View topic - <ANY> with composite id

View unanswered posts | View active topics

Board index » Hibernate & Java Persistence » Hibernate Users

All times are UTC - 5 hours [ DST ]

<ANY> with composite id

Page 1 of 1

[ 3 posts ]

Previous topic | Next topic

Author

Message

jensydney

Post subject: <ANY> with composite id

Posted: Sat Jun 04, 2005 8:49 pm

Beginner

Joined: Sat May 07, 2005 12:01 pm
Posts: 33

I've searched all over for the solution to this, but no clue. I want to use an <ANY> mapping to entities that all have composite IDs:

Code:

<class name="Parent">
  ...
  <any name="child" meta-type="integer" id-type="long,timestamp">
     <meta-value value="1" class="Child1"/>
     <meta-value value="2" class="Child2"/>
     <column name="child_type"/>
     <column name="child_id"/>
     <column name="child_ts"/>
  </any>
  ...
</class>

Children look like this:

Code:

<class name="Child1">
  <composite-id>
    <key-property name="id"/>
    <key-property name="timestamp"/>
  </composite-id>
</class>

Looks fine to me, but I get: property mapping has wrong number of columns: Parent.child type: object

Thanks for any help!

Jen

Top

gavin

Post subject:

Posted: Sat Jun 04, 2005 9:07 pm

Hibernate Team

Joined: Tue Aug 26, 2003 12:50 pm
Posts: 5130
Location: Melbourne, Australia

"long,timestamp" is not a type.

Best solution is to use a CompositeUserType instead of the <composite-id> mapping.

Top

jensydney

Post subject:

Posted: Sat Jun 04, 2005 9:26 pm

Beginner

Joined: Sat May 07, 2005 12:01 pm
Posts: 33

Thanks for the fast reply!

gavin wrote:

Best solution is to use a CompositeUserType instead of the <composite-id> mapping.

I have to keep "id" and "timestamp" as separate properties of the Child objects. It looks like CompositeUserType would require me to wrap up both elements into a single property. I suppose i could generate a temporary composite object on the fly, but I was wondering if there is a mapping semantic that supports multiple key columns -- if so, where would I specify their types, since "id-type" appears to apply to a single column only?

Thanks!

Jen

Top

Page 1 of 1

[ 3 posts ]

Board index » Hibernate & Java Persistence » Hibernate Users

All times are UTC - 5 hours [ DST ]

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum