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<sqlMapnamespace="test">

<typeAliasalias="Key"type="zzcv.dao.domain.Key"/>

<typeAliasalias="Lock"type="zzcv.dao.domain.Lock"/>

<resultMapid="KeyResult"class="Key">

<resultproperty="id"column="id"/>

<resultproperty="keyName"column="keyName"/>

<resultproperty="lock"column="lockId"select="getLockById"/>

</resultMap>

<!-- 通过key表中保存的lock的id实现的一对一关联,ibatis会使用getLockById(lockId)的结果填充lock属性 -->

<resultMapid="LockResult"class="Lock">

<resultproperty="id"column="id"/>

<resultproperty="lockName"column="lockName"/>

<resultproperty="keys"column="id"select="getKeysByLockId"/>

</resultMap>

<!-- 通过lock的id实现的一对多关联,ibatis会使用getKeysByLockId(id)得到的List填充keys属性 -->

<!-- 多对多可以通过嵌套实现,这里就不列出了 -->

<selectid="selectAllkeys"resultMap="KeyResult">

<![CDATA[  

 select id,lockId,keyName from key

 ]]>

</select>

<selectid="getLockById"parameterClass="int"resultClass="Lock">

<![CDATA[  

 select id,lockName from lock where id = #value#  

 ]]>

</select>

<selectid="selectAllLocks"resultMap="LockResult">

<![CDATA[  

 select id,lockName from lock

 ]]>

</select>

<selectid="getKeyByLockId"parameterClass="int"resultClass="key">

<![CDATA[  

 select id,lockId,keyName from lock where lockId = #value#  

 ]]>

</select>

</sqlMap>