[hibernate-issues] [Hibernate-JIRA] Commenté: (HHH-944) In one-to-many relationship (Set, Map, List), let <key> accept <formula> as an alternative to <column>.

[Xavier Brénuchon (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-944?page=comments#action_24545 ] 

Xavier Brénuchon commented on HHH-944:
--------------------------------------

I posted a patch for use <formula> in <key> for <one-to-many>  : HHH-2086
Even if it is simple,  this patch relates to more class that I thought.

> In one-to-many relationship (Set, Map, List),  let <key> accept <formula> as an alternative to <column>. 
> ---------------------------------------------------------------------------------------------------------
>
>          Key: HHH-944
>          URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-944
>      Project: Hibernate3
>         Type: New Feature

>     Versions: 3.1 rc3
>     Reporter: Etienne Laverdiere

>
>
> As explain in http://forum.hibernate.org/viewtopic.php?t=947249&highlight=&sid=c6df51fcf4a97edac80b76c317c51852 and alternatively in http://forum.hibernate.org/viewtopic.php?t=947145&highlight=&sid=c6df51fcf4a97edac80b76c317c51852, it would be nice if the <key> inside a SET or any collection (one-to-many relationship) could accept a <formula> instead of the column:
> Example:
>  <set name="childrens" lazy="true" inverse="true">
>       <key foreign-key="FinancialTransit">
> <formula>ANY SQL</formula>
>       </key>
>       <one-to-many class="com.eg.Children" />
>    </set>
> instead of :
>  <set name="childrens" lazy="true" inverse="true">
>       <key foreign-key="key1">
>          <column name="key2" scale="10"
>          precision="0" not-null="false" unique="true" />
>       </key>
>       <one-to-many  class="com.eg.Children" />
>    </set>
> It would necessitate to patch the class AbstractCollectionPersister and modify the DTD of hibernate mapping.
> Regards, 
> Etienne

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