SSH整合中关于Hibernate实现级联删除和不实现级联删除

Question

数据库中有三个表 分别是用户表、评论表、信息表。用户表和评论表是一对多关联，信息表和评论表也是一对多关联。现在我想删除一条信息 同时级联删除关于这条信息的评论。用户表不进行级联删除。请问各位高手映射文件中该怎么写wbuser 表
    <set name="wbComments" lazy="false" cascade="all" inverse="true">
            <key>
                <column name="u_ID" />
            </key>
            <one-to-many class="com.ambow.pojo.WbComment" />
        </set>wbcomment 表
       <many-to-one name="wbMessage" lazy="false" cascade="all" class="com.ambow.pojo.WbMessage" fetch="join">
            <column name="mes_ID" />
        </many-to-one>
        <many-to-one name="wbUser"   class="com.ambow.pojo.WbUser" fetch="select">
            <column name="u_ID" />
        </many-to-one>wbmessage 表
     <set name="wbComments" inverse="false" lazy="false" cascade="all-delete-orphan" order-by="mes_ID">
            <key>
                <column name="mes_ID" />
            </key>
            <one-to-many class="com.ambow.pojo.WbComment" />
        </set>

Answer 1

<set name="wbComments" lazy="true" cascade="all" inverse="true">
  <key>
  <column name="u_ID" />
  </key>
  <one-to-many class="com.ambow.pojo.WbComment" />
</set>