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Posted to jdo-dev@db.apache.org by "Craig Russell (JIRA)" <ji...@apache.org> on 2006/06/15 23:22:30 UTC
[jira] Updated: (JDO-193) Need new test cases for Map 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=all ]
Craig Russell updated JDO-193:
------------------------------
Fix Version: JDO 2 maintenance release 1
Version: JDO 2 final
(was: JDO 2 beta)
Assign To: Michelle Caisse
JDO also allows mapping Lists where there is no join table, and the ordering element is contained in the related table.
This should be investigated at the same time.
> Need new test cases for Map 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
> Type: Test
> Components: tck20
> Versions: JDO 2 final
> Environment: TCK
> Reporter: Craig Russell
> Assignee: Michelle Caisse
> Fix For: JDO 2 maintenance release 1
>
> 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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