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From "Craig Russell (JIRA)" <j...@apache.org>
Subject [jira] Created: (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
Date Wed, 26 Oct 2005 12:32:55 GMT
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  
 Environment: TCK
    Reporter: Craig Russell


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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