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table-per-subclass strategy, Renaming the Key in subtable?

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nodje

Post subject: table-per-subclass strategy, Renaming the Key in subtable?

Posted: Wed Feb 25, 2004 2:20 pm

Regular

Joined: Fri Nov 07, 2003 6:31 am
Posts: 104
Location: Beijing, China

Hi,

i've got the following mapping (sorry for the fake lame names...)

Code:

<hibernate-mapping>
    <class name="org.xx.dossierformation.model.DF" table="DF">
        <id name="id" column="DF_ID" type="java.lang.Long">
            <generator class="identity"/>
        </id>

        <property name="dfF1" column="DF_F1" type="java.lang.String" not-null="true"/>

        <joined-subclass name="org.xx.dossierformation.model.DFStd" table="DFS">
            <key column="DF_ID"/>
            <property name="dfsInfo" column="DFS_INFO" type="java.lang.String" not-null="true"/>
        </joined-subclass>

        <joined-subclass name="org.xx.dossierformation.model.DFMasse" table="DFM">
            <key column="DF_ID"/>
            <property name="dfmInfo" column="DFM_INFO" type="java.lang.String" not-null="true"/>
        </joined-subclass>

    </class>
</hibernate-mapping>

tables look likes:
DF
-------------
DF_ID
DF_F1

DFS
-------------
DF_ID
DFS_INFO

DFM
-------------
DF_ID
DFM_INFO

I just would like to be able to rename the DF_ID column in the tables DFM & DFS following my conventions... (i.e. DFS_ID_FK, DFM_ID_FK)

Is there any way to do that???

Last edited by nodje on Tue Jun 03, 2008 5:19 am, edited 1 time in total.

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nodje

Post subject: BTW

Posted: Wed Feb 25, 2004 2:25 pm

Regular

Joined: Fri Nov 07, 2003 6:31 am
Posts: 104
Location: Beijing, China

BTW, is there any way to prevent the creation of the superclass object itself from the mapping?

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michael

Post subject:

Posted: Wed Feb 25, 2004 2:32 pm

Hibernate Team

Joined: Tue Sep 09, 2003 2:10 pm
Posts: 3246
Location: Passau, Germany

Why don't you just change the <key column="DF_ID"/> mappings?

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nodje

Post subject:

Posted: Thu Feb 26, 2004 4:15 am

Regular

Joined: Fri Nov 07, 2003 6:31 am
Posts: 104
Location: Beijing, China

You mean something like this:

Code:

<hibernate-mapping>
    <class name="org.xx.dossierformation.model.DF" table="DF">
        <id name="id" column="DF_ID" type="java.lang.Long">
            <generator class="identity"/>
        </id>

        <property name="dfF1" column="DF_F1" type="java.lang.String" not-null="true"/>

        <joined-subclass name="org.xx.dossierformation.model.DFStd" table="DFS">
            <key column="DFS_ID_PK"/>
            <property name="dfsInfo" column="DFS_INFO" type="java.lang.String" not-null="true"/>
        </joined-subclass>

        <joined-subclass name="org.xx.dossierformation.model.DFMasse" table="DFM">
            <key column="DFM_ID_PK"/>
            <property name="dfmInfo" column="DFM_INFO" type="java.lang.String" not-null="true"/>
        </joined-subclass>

    </class>
</hibernate-mapping>

?

It doesn't work, it seems to me that the key column needs to reference a unique identifier in the parent class.

Last edited by nodje on Tue Jun 03, 2008 5:19 am, edited 1 time in total.

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nodje

Post subject:

Posted: Thu Feb 26, 2004 4:26 am

Regular

Joined: Fri Nov 07, 2003 6:31 am
Posts: 104
Location: Beijing, China

Ok sorry, wrong test, it works perfectly!!

But is there any way to prevent creation a single parent class from the maping?

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