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Using autoincrement generator for key in composite-id

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NeroN

Post subject: Using autoincrement generator for key in composite-id

Posted: Wed Feb 17, 2010 7:44 am

Newbie

Joined: Mon Feb 08, 2010 5:48 pm
Posts: 3

Please can someone help me with creating auto-increment generator for key property in composite-id.
There is a parent child relationship, and in Child table one key is taken from parent table, but childID should be generated automatically.

Code:

<class name="Child">
      <composite-id>
         <key-many-to-one name="parent" class="Parent" lazy="false">
            <column name="ParentID"></column>
         </key-many-to-one>
         <key-property name="childID" column="ChildID" type="long"/>   
      </composite-id>
      
      <property name="someField" column="SomeField" type="string" />
   </class>

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nordborg

Post subject: Re: Using autoincrement generator for key in composite-id

Posted: Wed Feb 17, 2010 7:59 am

Expert

Joined: Wed Mar 03, 2004 6:35 am
Posts: 1240
Location: Lund, Sweden

Composite keys must always be assigned by the application. See http://docs.jboss.org/hibernate/stable/ ... ompositeid

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NeroN

Post subject: Re: Using autoincrement generator for key in composite-id

Posted: Wed Feb 17, 2010 9:34 am

Newbie

Joined: Mon Feb 08, 2010 5:48 pm
Posts: 3

Thank you,
I'll do it from the application!

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