[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2265) allow property-refs to refer to portions of the owner's composite identifier

[Steve Ebersole (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2265?page=comments#action_25533 ] 

Steve Ebersole commented on HHH-2265:
-------------------------------------

I should mention that this is a very, very, very badly designed schema...

property-ref assumes that its target is unique.  Here, that would mean that an individual column of the composite primary key is additionally unique on its own for this to work as expected

> allow property-refs to refer to portions of the owner's composite identifier
> ----------------------------------------------------------------------------
>
>          Key: HHH-2265
>          URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2265
>      Project: Hibernate3
>         Type: Improvement

>   Components: core
>     Versions: 3.2.1
>     Reporter: Steve Ebersole
>     Assignee: Steve Ebersole
>      Fix For: 3.2.2

>
>
> Currently property-refs cannot reference portions of a composite identifier, neither embedded or mapped variations.
> For example,
> <class name="Discount">
>     <composite-id>
>         <key-property name="customerId" ... />
>         <key-property name="baseCode" column="DISCOUNT_BASE_CODE"... />
>     </composite-id>
>     <set ...>
>         <key column="CODE_BASE_CODE" property-ref="id.basecode"/>
>         <one-to-many class="Code"/>
>     </set>
> </class>
> <class name="Code">
>     <!-- some property mapped to a CODE_BASE_CODE column -->
>     ...
> </class>

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