价格查询，待处理订单内容

src/main/java/com/ycwl/basic/pricing/mapper/PriceCouponConfigMapper.java

@@ -0,0 +1,62 @@
+package com.ycwl.basic.pricing.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.ycwl.basic.pricing.entity.PriceCouponConfig;
+import org.apache.ibatis.annotations.Insert;
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.Select;
+import org.apache.ibatis.annotations.Update;
+
+import java.util.List;
+
+/**
+ * 优惠券配置Mapper
+ */
+@Mapper
+public interface PriceCouponConfigMapper extends BaseMapper<PriceCouponConfig> {
+    
+    /**
+     * 查询有效的优惠券配置
+     */
+    @Select("SELECT * FROM price_coupon_config WHERE is_active = 1 " +
+            "AND valid_from <= NOW() AND valid_until > NOW() " +
+            "AND used_quantity < total_quantity")
+    List<PriceCouponConfig> selectValidCoupons();
+    
+    /**
+     * 根据ID查询优惠券（包括使用数量检查）
+     */
+    @Select("SELECT * FROM price_coupon_config WHERE id = #{couponId} " +
+            "AND is_active = 1 AND valid_from <= NOW() AND valid_until > NOW() " +
+            "AND used_quantity < total_quantity")
+    PriceCouponConfig selectValidCouponById(Long couponId);
+    
+    /**
+     * 增加优惠券使用数量
+     */
+    @Update("UPDATE price_coupon_config SET used_quantity = used_quantity + 1, " +
+            "updated_time = NOW() WHERE id = #{couponId} AND used_quantity < total_quantity")
+    int incrementUsedQuantity(Long couponId);
+    
+    /**
+     * 插入优惠券配置
+     */
+    @Insert("INSERT INTO price_coupon_config (coupon_name, coupon_type, discount_value, min_amount, " +
+            "max_discount, applicable_products, total_quantity, used_quantity, valid_from, valid_until, " +
+            "is_active, created_time, updated_time) VALUES " +
+            "(#{couponName}, #{couponType}, #{discountValue}, #{minAmount}, #{maxDiscount}, " +
+            "#{applicableProducts}, #{totalQuantity}, #{usedQuantity}, #{validFrom}, #{validUntil}, " +
+            "#{isActive}, NOW(), NOW())")
+    int insertCoupon(PriceCouponConfig coupon);
+    
+    /**
+     * 更新优惠券配置
+     */
+    @Update("UPDATE price_coupon_config SET coupon_name = #{couponName}, coupon_type = #{couponType}, " +
+            "discount_value = #{discountValue}, min_amount = #{minAmount}, max_discount = #{maxDiscount}, " +
+            "applicable_products = #{applicableProducts}, total_quantity = #{totalQuantity}, " +
+            "valid_from = #{validFrom}, valid_until = #{validUntil}, is_active = #{isActive}, " +
+            "updated_time = NOW() WHERE id = #{id}")
+    int updateCoupon(PriceCouponConfig coupon);
+}