项目名称：拉新营销平台
业务：
⽤户服务：⽤户注册/登录、 头像和信息维护、 收货地址模块
优惠券服务：展示和领劵、 使⽤和释放，
商品服务：商品基本展示库存扣减回收、 购物⻋模块
订单服务：下单⽀付、 订单基本操作
https://blog.virtualagent.cn/blog/series/Project_XD_Paas
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37 lines
1.6 KiB
37 lines
1.6 KiB
8 months ago
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<?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="cn.nla.coupon.mapper.CouponMapper">
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<!-- 通用查询映射结果 -->
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<resultMap id="BaseResultMap" type="cn.nla.coupon.model.entity.CouponEntity">
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<id column="id" property="id" />
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<result column="category" property="category" />
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<result column="publish" property="publish" />
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<result column="coupon_img" property="couponImg" />
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<result column="coupon_title" property="couponTitle" />
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<result column="price" property="price" />
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<result column="user_limit" property="userLimit" />
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<result column="start_time" property="startTime" />
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<result column="end_time" property="endTime" />
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<result column="publish_count" property="publishCount" />
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<result column="stock" property="stock" />
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<result column="create_time" property="createTime" />
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<result column="condition_price" property="conditionPrice" />
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</resultMap>
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<!-- 通用查询结果列 -->
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<sql id="Base_Column_List">
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id, category, publish, coupon_img, coupon_title, price, user_limit, start_time, end_time, publish_count, stock, create_time, condition_price
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</sql>
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<!--扣减库存-->
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<update id="reduceStock">
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update coupon set stock=stock-1 where id = #{couponId}
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</update>
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<!--扣减库存(加版本号，支持高并发下不超发问题)-->
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<update id="reduceStockOpt">
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update coupon set stock=stock-1,version=version+1 where id = #{couponId} and stock>0 and version=#{oldVersion}
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</update>
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</mapper>
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