update

jsowell-pile/src/main/resources/mapper/pile/CouponTemplateMapper.xml

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+<?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="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, 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, 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}, #{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="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>