<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
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<mapper namespace="com.moral.mapper.MapPathMapper">
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<resultMap id="resultMap" type="WebProvince">
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<id property="provinceCode" column="province_code"></id>
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<result property="provinceName" column="province_name"></result>
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<collection column="province_code" property="cities" ofType="com.moral.entity.WebCity">
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<id property="cityCode" column="city_code"></id>
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<result property="cityName" column="city_name"></result>
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<result property="provinceCode" column="province_code"></result>
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<collection property="areas" column="city_code" ofType="com.moral.entity.Area">
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<id property="areaCode" column="area_code"></id>
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<result property="areaName" column="area_name"></result>
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<result property="cityCode" column="city_code"></result>
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</collection>
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</collection>
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</resultMap>
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<sql id="Base_Column_List">
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p.province_code,p.province_name,c.city_code,c.city_name,c.province_code,a.area_code,a.area_name,a.city_code
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</sql>
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<select id="getMapPathByRegionCode" resultMap="resultMap">
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SELECT
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<include refid="Base_Column_List"/>
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FROM province p
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JOIN city c ON c.`province_code` = p.`province_code`
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JOIN area a ON a.`city_code` = c.`city_code`
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<choose>
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<when test="areaCode!=null">
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AND a.`area_code` = #{areaCode}
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</when>
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<when test="cityCode!=null">
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AND c.`city_code` = #{cityCode}
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</when>
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<when test="provinceCode!=null">
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AND p.`province_code` = #{provinceCode}
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</when>
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</choose>
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</select>
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</mapper>
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