I have a subclass element, which happens to be a mix of table per class hierarchy with table per subclass. My question is, why am I not allowed to use the <set> mapping within the <join> element? What is the alternative?
<subclass name="bean.Employer" discriminator-value="E">
<join table="EMPLOYER">
<key column="USER_ID"/>
<property name="name" column="NAME" type="java.lang.String"/>
<property name="description" column="DESCRIPTION" type="java.lang.String"/>
<set name="locations">
<key>
<column name="EMP_ID" precision="12" scale="0"/>
</key>
<one-to-many class="bean.EmpLocation"/>
</set>
</join>
</subclass>
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