kmall-pt/kmall-api/src/main/resources/mybatis/mapper/ApiProductMapper.xml

<?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="com.kmall.api.dao.ApiProductMapper">

    <!-- 可根据自己的需求，是否要使用 -->
    <resultMap type="com.kmall.api.entity.ProductVo" id="productMap">
        <result property="id" column="id"/>
        <result property="goods_id" column="goods_id"/>
        <result property="goods_specification_ids" column="goods_specification_ids"/>
        <result property="goods_specification_name_value" column="goods_specification_name_value"/>
        <result property="goods_sn" column="goods_sn"/>
        <result property="retail_price" column="retail_price"/>
        <result property="market_price" column="market_price"/>
        <result property="store_id" column="store_id"/>
        <result property="stock_num" column="stock_num"/>
        <result property="sell_volume" column="sell_volume"/>
        <result property="goods_default" column="goods_default"/>
    </resultMap>

    <select id="queryObject" resultMap="productMap">
        SELECT
            a.*
        FROM
            mall_product a
        where id = #{value}
	</select>

    <select id="queryObjectByStoreId" resultMap="productMap">
       SELECT
            a.id,
            a.goods_id,
            a.goods_specification_ids,
            a.goods_specification_name_value,
            a.goods_sn,
            a.goods_default,
            b.sell_volume,
            b.market_price,
            b.retail_price,
            b.store_id,
            b.stock_num
        FROM
            mall_product a
        LEFT JOIN mall_product_store_rela b ON a.id = b.product_id
        where b.stock_num is not null and b.stock_num > 0 and a.id = #{id} and b.store_id = #{store_id}
    </select>

    <select id="queryByStoreId" resultMap="productMap">
        SELECT
        a.id,
        a.goods_id,
        a.goods_specification_ids,
        a.goods_specification_name_value,
        a.goods_sn,
        a.goods_default,
        b.sell_volume,
        b.market_price,
        b.retail_price,
        b.store_id,
        b.stock_num
        FROM
        mall_product a
        LEFT JOIN mall_product_store_rela b ON a.id = b.product_id
        where a.id = #{id} and b.store_id = #{store_id}
    </select>

    <select id="queryOneByGoodsId" resultMap="productMap">
        SELECT
            a.id,
            a.goods_id,
            a.goods_specification_ids,
            a.goods_specification_name_value,
            a.goods_sn,
            a.goods_default,
            b.sell_volume,
            b.market_price,
            b.retail_price,
            b.store_id,
            b.stock_num
        FROM
        mall_product a
        LEFT JOIN mall_product_store_rela b ON a.id = b.product_id
        where b.stock_num is not null and a.goods_id = #{goods_id} and b.store_id = #{store_id}
        order by b.stock_num desc,a.id desc
        limit 1
    </select>

    <select id="queryList" resultMap="productMap">
        SELECT
        a.*,
        b.sell_volume,
        b.market_price,
        b.retail_price,
        b.stock_num
        FROM
        mall_product a
        LEFT JOIN mall_product_store_rela b ON a.id = b.product_id
        <where>
            b.stock_num > 0
            <if test="goods_id != null">
                and a.goods_id = #{goods_id}
            </if>
            <if test="store_id != null">
                and b.store_id = #{store_id}
            </if>
        </where>
        <choose>
            <when test="sidx != null and sidx.trim() != ''">
                order by ${sidx} ${order}
            </when>
            <otherwise>
                order by id desc
            </otherwise>
        </choose>
        <if test="offset != null and limit != null">
            limit #{offset}, #{limit}
        </if>
    </select>

    <select id="queryTotal" resultType="int">
        select count(id) from mall_product
        FROM
        mall_product a
        LEFT JOIN mall_product_store_rela b ON a.id = b.product_id
        <where>
            b.stock_num > 0
            <if test="goods_id != null">
                and a.goods_id = #{goods_id}
            </if>
            <if test="store_id != null">
                and b.store_id = #{store_id}
            </if>
        </where>
    </select>

    <update id="updateStockNum" parameterType="com.kmall.api.entity.ProductVo">
        update mall_product_store_rela a
        <set>
            <if test="stock_num != null">a.`stock_num` = #{stock_num},</if>
            <if test="sell_volume != null">a.`sell_volume` = #{sell_volume},</if>
        </set>
        where a.product_id = #{id} and a.store_id = #{store_id}
    </update>

    <update id="updateSellVolumeNum" parameterType="com.kmall.api.entity.ProductVo">
        update mall_product_store_rela a
        <set>
            <if test="sell_volume != null">a.`sell_volume` = #{sell_volume},</if>
        </set>
        where a.product_id = #{id} and a.store_id = #{store_id}
    </update>
</mapper>