jsowell-charger-web/jsowell-pile/src/main/resources/mapper/pile/CouponTemplateMapper.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.jsowell.pile.mapper.CouponTemplateMapper">

    <resultMap id="BaseResultMap" type="com.jsowell.pile.domain.CouponTemplate">
        <id column="id" property="id"/>
        <result column="name" property="name"/>
        <result column="type" property="type"/>
        <result column="creator_type" property="creatorType"/>
        <result column="creator_merchant_id" property="creatorMerchantId"/>
        <result column="scope_type" property="scopeType"/>
        <result column="points_cost" property="pointsCost"/>
        <result column="discount_rate" property="discountRate"/>
        <result column="min_charge_amount" property="minChargeAmount"/>
        <result column="max_discount_amount" property="maxDiscountAmount"/>
        <result column="exchange_start_time" property="exchangeStartTime"/>
        <result column="exchange_end_time" property="exchangeEndTime"/>
        <result column="stock_total" property="stockTotal"/>
        <result column="stock_remain" property="stockRemain"/>
        <result column="validity_type" property="validityType"/>
        <result column="valid_start_time" property="validStartTime"/>
        <result column="valid_end_time" property="validEndTime"/>
        <result column="valid_days" property="validDays"/>
        <result column="daily_limit" property="dailyLimit"/>
        <result column="monthly_limit" property="monthlyLimit"/>
        <result column="total_limit" property="totalLimit"/>
        <result column="status" property="status"/>
        <result column="description" property="description"/>
        <result column="image" property="image"/>
        <result column="update_by" property="updateBy"/>
        <result column="create_by" property="createBy"/>
        <result column="create_time" property="createTime"/>
        <result column="update_time" property="updateTime"/>
        <result column="del_flag" property="delFlag"/>
    </resultMap>

    <sql id="Base_Column_List">
        id, name, type, creator_type, creator_merchant_id, scope_type,
        points_cost, discount_rate, min_charge_amount, max_discount_amount,
        exchange_start_time, exchange_end_time,
        stock_total, stock_remain, validity_type,
        valid_start_time, valid_end_time, valid_days,
        daily_limit, monthly_limit, total_limit,
        status, description, image, update_by, create_by, create_time, update_time, del_flag
    </sql>

    <select id="selectById" resultMap="BaseResultMap">
        SELECT <include refid="Base_Column_List"/>
        FROM coupon_template
        WHERE id = #{id} AND del_flag = '0'
    </select>

    <select id="selectList" resultMap="BaseResultMap">
        SELECT <include refid="Base_Column_List"/>
        FROM coupon_template
        WHERE del_flag = '0'
        <if test="creatorMerchantId != null">
            AND creator_merchant_id = #{creatorMerchantId}
        </if>
        <if test="status != null">
            AND status = #{status}
        </if>
        <if test="type != null">
            AND type = #{type}
        </if>
        <if test="name != null and name != ''">
            AND name LIKE CONCAT('%', #{name}, '%')
        </if>
        ORDER BY create_time DESC
    </select>

    <insert id="insert" useGeneratedKeys="true" keyProperty="id">
        INSERT INTO coupon_template (
            name, type, creator_type, creator_merchant_id, scope_type,
            points_cost, discount_rate, min_charge_amount, max_discount_amount,
            exchange_start_time, exchange_end_time,
            stock_total, stock_remain, validity_type,
            valid_start_time, valid_end_time, valid_days,
            daily_limit, monthly_limit, total_limit,
            status, description, image, update_by, create_by, create_time, update_time, del_flag
        ) VALUES (
            #{name}, #{type}, #{creatorType}, #{creatorMerchantId}, #{scopeType},
            #{pointsCost}, #{discountRate}, #{minChargeAmount}, #{maxDiscountAmount},
            #{exchangeStartTime}, #{exchangeEndTime},
            #{stockTotal}, #{stockRemain}, #{validityType},
            #{validStartTime}, #{validEndTime}, #{validDays},
            #{dailyLimit}, #{monthlyLimit}, #{totalLimit},
            #{status}, #{description}, #{image}, #{updateBy}, #{createBy}, NOW(), NOW(), '0'
        )
    </insert>

    <update id="updateById">
        UPDATE coupon_template
        <set>
            <if test="name != null">name = #{name},</if>
            <if test="status != null">status = #{status},</if>
            <if test="stockTotal != null">stock_total = #{stockTotal},</if>
            <if test="dailyLimit != null">daily_limit = #{dailyLimit},</if>
            <if test="monthlyLimit != null">monthly_limit = #{monthlyLimit},</if>
            <if test="totalLimit != null">total_limit = #{totalLimit},</if>
            <if test="description != null">description = #{description},</if>
            <if test="image != null">image = #{image},</if>
            <if test="updateBy != null">update_by = #{updateBy},</if>
            update_time = NOW()
        </set>
        WHERE id = #{id} AND del_flag = '0'
    </update>

    <!-- 原子扣减库存：stock_remain=-1(不限) 时跳过扣减直接返回1 -->
    <update id="deductStock">
        UPDATE coupon_template
        SET stock_remain = stock_remain - 1,
            update_time  = NOW()
        WHERE id = #{id}
          AND del_flag = '0'
          AND (stock_remain = -1 OR stock_remain >= 1)
    </update>

    <!-- 检查是否已有兑换记录（用于冻结字段校验） -->
    <select id="countExchangeRecord" resultType="int">
        SELECT COUNT(1) FROM member_coupon
        WHERE template_id = #{templateId} AND del_flag = '0'
    </select>

</mapper>