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Rober2D2
 Post subject: Is possible to restrict composite-id in mapping file?
PostPosted: Wed Oct 31, 2007 12:48 pm 
Beginner
Beginner

Joined: Tue Oct 30, 2007 7:57 am
Posts: 47
Hibernate version 3.2.5
Database MySQL

I have a class with a composite-id (relation table), and i need to add some restrictions to the possilbe values. I'd like to know if there is any way to restrict it in mappig files (I prefer not to do it by code). The mapping file is:

Code:
    <class name="CarOption" table="CAR_OPTION">
      <composite-id name="pk" class="CarOptionPK">
         <key-many-to-one name="modelOption" class="cars.ModelOption">
            <column name="OPTION_ID" />
            <column name="MODEL_ID" />
         </key-many-to-one>
         <key-many-to-one name="car" column="CAR_ID" class="cars.Car"/>         
      </composite-id>
      <property name="value" column="VALUE" type="integer" not-null="false"/>
    </class>


The restriction is that modelOption.pk.model, must equal car.model

Is there any way to add it in the mapping file?
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TomAtoms
 Post subject:
PostPosted: Fri Nov 02, 2007 9:50 pm 
Newbie

Joined: Tue Sep 04, 2007 2:21 pm
Posts: 14
In the class tag you can define a where attribute.

From the reference doc...
(12)
where (optional) specify an arbitrary SQL WHERE condition to be used when retrieving objects of this class

HTH
Tom
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Rober2D2
 Post subject:
PostPosted: Mon Nov 05, 2007 4:33 am 
Beginner
Beginner

Joined: Tue Oct 30, 2007 7:57 am
Posts: 47
TomAtoms wrote:
In the class tag you can define a where attribute.

From the reference doc...
(12)
where (optional) specify an arbitrary SQL WHERE condition to be used when retrieving objects of this class

HTH
Tom


It seems useful, but only when retrieving data, not when storing it. Thank you anyway. I am learning hibernate, and just wanted to know what is possible.
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