楼上的我一不小心看成了猪头职位,哈哈哈!!
楼主,A表应该类似这样
      <array name="BTable" outer-join="false" optimistic-lock="true">
       <key>
       <column name="aID" not-null="false" length="0"/>
       </key>
       <one-to-many class="BTable"/>
      </array>
      <array name="CTable" outer-join="false" optimistic-lock="true">
       <key>
       <column name="aID" not-null="false" length="0"/>
       </key>
       <one-to-many class="CTable"/>
      </array>