[jibx-users] Error "Mapping for type SubjectSelector must extend abstract mapping for type ElementSelector"

[Paul Abbott]

Hi, I'm getting the above error message at run time with I try to marshal a tree of objects. I'm using the following mappings which compile without error; <binding>      <mapping name="rule" class="Rule">          <collection field="selectors" type="java.util.ArrayList" item-type="Subject" usage="optional"/>      </mapping>      <mapping class="ElementSelector" abstract="true">      </mapping>      <mapping name="typeSelector" class="TypeSelector" extends="ElementSelector">      </mapping>      <mapping class="Subject" abstract="true"/>      <mapping name="subjectSelector" class="SubjectSelector" extends="Subject">          <structure get-method="getElementSelector" set-method="setElementSelector" usage="optional">                <!-- This will contain an object of type TypeSelector -->          </structure>      </mapping> </binding> I've simplified the mapping for this posting, before you ask "why are you doing that?" The Java objects are as follows; ElementSelector and Subject are both interfaces Rule, TypeSelector and SubjectSelector and concrete classes, TypeSelector implements ElementSelector and SubjectSelector implements Subject. There appears to be a problem with the use of 2 abstract mappings, one inside the other. Has anyone else seen this kind of problem? Paul Abbott Volantis Systems Ltd.