Mybatis之collection嵌套查询mapper文件写法

mapper.xml写法举例

 <?xml version="1.0" encoding="UTF-8" ?>

 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >

 <mapper namespace="maserati.dao.meta.list.ListSchemaMapper">

     <resultMap id="BaseResultMap" type="maserati.dao.meta.list.entity.ListSchemaEntity">

         <id column="id" property="id" jdbcType="INTEGER"/>

         <result column="mod_name" property="modName" jdbcType="VARCHAR"/>

         <result column="prop_name" property="propName" jdbcType="VARCHAR"/>

         <result column="prop_desc" property="propDesc" jdbcType="VARCHAR"/>

         <result column="del_flag" property="delFlag" jdbcType="BIT"/>

         <result column="create_time" property="createTime" jdbcType="TIMESTAMP"/>

         <result column="update_time" property="updateTime" jdbcType="TIMESTAMP"/>

     </resultMap>

     <resultMap id="ListMeta" type="maserati.dao.meta.list.entity.ListMeta">

         <result column="mod_name" property="modName" jdbcType="VARCHAR"/>

         <result column="mod_desc" property="modTitle" jdbcType="VARCHAR"/>

         <collection property="tHeads" ofType="maserati.dao.meta.list.entity.PropMeta"

                     select="selectTableHeads" column="mod_name" javaType="ArrayList"/>

     </resultMap>

     <resultMap id="TableHead" type="maserati.dao.meta.list.entity.PropMeta">

         <result property="propName" column="prop_name" jdbcType="VARCHAR"/>

         <result property="propDesc" column="prop_desc" jdbcType="VARCHAR"/>

         <result property="propType" column="prop_type" jdbcType="VARCHAR"/>

     </resultMap>

     <sql id="Base_Column_List">

     id, mod_name, prop_name, prop_desc, del_flag, create_time, update_time

   </sql>

     <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer">

         select

         <include refid="Base_Column_List"/>

         from t_list_schema

         where id = #{id,jdbcType=INTEGER}

     </select>

     <select id="selectAllProdListMeta" resultMap="ListMeta">

     select

       distinct mod_name,mod_desc

     from t_list_schema where mod_name in ('loan','credit_card','other_prod') and del_flag = 0

   </select>

     <select id="selectTableHeads" resultMap="TableHead" parameterType="java.lang.String">

     select prop_name,prop_desc,prop_type

     from t_list_schema where mod_name='${value}' and del_flag = 0 order by sort_index

   </select>

     <select id="selectPropNameByModName" resultType="java.lang.String" parameterType="java.lang.String">

         select prop_name from t_list_schema where mod_name=#{value} and del_flag=0

         order by sort_index

     </select>

     <select id="selectTableHeadsByModName" resultMap="TableHead" >

         select prop_name,prop_desc,prop_type from t_list_schema where mod_name=#{value} and del_flag=0

         order by sort_index

     </select>

 </mapper>