<hibernate-mapping>
<!--
        Auto-generated mapping file from
        the hibernate.org cfg2hbm engine
-->
    <class name="Part" table="_part">
        <composite-id name="id" class="PartId">
            <key-property name="partNumber" type="string">
                <column name="partNumber" length="20" />
            </key-property>
            <key-property name="supplier" type="string">
                <column name="supplier" length="20" />
            </key-property>
        </composite-id>
        <many-to-one name="parent" class="Part">
            <column name="parent_PartNumber" length="20" />
            <column name="parent_Supplier" length="20" />
        </many-to-one>
        <property name="description" type="string">
            <column name="description" length="100" />
        </property>
         ...
         ...
        <set name="parts" inverse="true">
           <key>
      <column name="parent_PartNumber" length="20" />
           <column name="parent_Supplier" length="20" />
           </key>
           <one-to-many class="Part"/>
        </set>
    </class>
</hibernate-mapping>