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Posted to jdo-dev@db.apache.org by "Michelle Caisse (JIRA)" <ji...@apache.org> on 2006/09/08 22:35:23 UTC

[jira] Commented: (JDO-193) Need new test cases for Map and List where there is no join table; the key is a field of the value type or the value is a field of the key type

    [ http://issues.apache.org/jira/browse/JDO-193?page=comments#action_12433490 ] 
            
Michelle Caisse commented on JDO-193:
-------------------------------------

Checked in patch at revision 441641

> Need new test cases for Map and List where there is no join table; the key is a field of the value type or  the value is a field of the key type
> ------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: JDO-193
>                 URL: http://issues.apache.org/jira/browse/JDO-193
>             Project: JDO
>          Issue Type: Test
>          Components: tck20
>    Affects Versions: JDO 2 final
>         Environment: TCK
>            Reporter: Craig Russell
>         Assigned To: Michelle Caisse
>             Fix For: JDO 2 maintenance release 1
>
>         Attachments: JDO-193.patch
>
>
> JDO allows mapping of Maps where there is no join table. The metadata for the Employee/Department mapping uses the mapped-by attribute of the map element:
> <class name="Department">
> <field name="employees" mapped-by="dept">
> <key mapped-by="id"/>
> </field>
> </class>
> <class name="Employee">
> <field name="id" column="ID"/>
> <field name="dept" column="DEPT"/>
> </class>
> Another mapping would have the key of the Map be the Employee and the value be the id. 
> We should probably define a separate package for this mapping, as there is some confusion in using parts of the Company model where we have changed a significant part of the model.

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