营销活动：重构 getCombinationActivityBySpuIdsAndStatus 方法

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/mysql/bargain/BargainActivityMapper.java

@@ -6,14 +6,15 @@ import cn.iocoder.yudao.framework.mybatis.core.mapper.BaseMapperX;
 import cn.iocoder.yudao.framework.mybatis.core.query.LambdaQueryWrapperX;
 import cn.iocoder.yudao.module.promotion.controller.admin.bargain.vo.activity.BargainActivityPageReqVO;
 import cn.iocoder.yudao.module.promotion.dal.dataobject.bargain.BargainActivityDO;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
-import org.apache.ibatis.annotations.Select;
 
 import java.time.LocalDateTime;
 import java.util.Collection;
 import java.util.List;
+import java.util.Map;
 
 /**
  * 砍价活动 Mapper
@@ -86,30 +87,25 @@ public interface BargainActivityMapper extends BaseMapperX<BargainActivityDO> {
                 .last("LIMIT " + count));
     }
 
-    // TODO @puhui999：一个商品，在统一时间，不会参与多个活动；so 是不是不用 inner join 哈？
-    // PS：如果可以参与多个，其实可以这样写 select * from promotion_bargain_activity group by spu_id ORDER BY create_time DESC；通过 group 来过滤
-
     /**
-     * 获取指定 spu 编号最近参加的活动，每个 spuId 只返回一条记录
+     * 查询出指定 spuId 的 spu 参加的活动最接近现在的一条记录。多个的话，一个 spuId 对应一个最近的活动编号
      *
      * @param spuIds spu 编号
      * @param status 状态
-     * @return 砍价活动列表
+     * @return 包含 spuId 和 activityId 的 map 对象列表
      */
-    @Select("<script> " + "SELECT p1.* " +
-            "FROM promotion_bargain_activity p1 " +
-            "INNER JOIN ( " +
-            "  SELECT spu_id, MAX(DISTINCT create_time) AS max_create_time " +
-            "  FROM promotion_bargain_activity " +
-            "  WHERE spu_id IN " +
-            "<foreach collection='spuIds' item='spuId' open='(' separator=',' close=')'>" +
-            "    #{spuId}" +
-            "</foreach>" +
-            "  GROUP BY spu_id " +
-            ") p2 " +
-            "ON p1.spu_id = p2.spu_id AND p1.create_time = p2.max_create_time AND p1.status = #{status} " +
-            "ORDER BY p1.create_time DESC;" +
-            " </script>")
-    List<BargainActivityDO> selectListBySpuIdsAndStatus(@Param("spuIds") Collection<Long> spuIds, @Param("status") Integer status);
+    default List<Map<String, Object>> selectSpuIdAndActivityIdMapsBySpuIdsAndStatus(@Param("spuIds") Collection<Long> spuIds, @Param("status") Integer status) {
+        return selectMaps(new QueryWrapper<BargainActivityDO>()
+                .select("spu_id AS spuId, MAX(DISTINCT(id)) AS activityId") // 时间越大 id 也越大 直接用 id
+                .in("spu_id", spuIds)
+                .eq("status", status)
+                .groupBy("spu_id"));
+    }
+
+    default List<BargainActivityDO> selectListByIds(Collection<Long> ids) {
+        return selectList(new LambdaQueryWrapperX<BargainActivityDO>()
+                .in(BargainActivityDO::getId, ids)
+                .orderByDesc(BargainActivityDO::getCreateTime));
+    }
 
 }

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/mysql/combination/CombinationActivityMapper.java

@@ -6,12 +6,13 @@ import cn.iocoder.yudao.framework.mybatis.core.mapper.BaseMapperX;
 import cn.iocoder.yudao.framework.mybatis.core.query.LambdaQueryWrapperX;
 import cn.iocoder.yudao.module.promotion.controller.admin.combination.vo.activity.CombinationActivityPageReqVO;
 import cn.iocoder.yudao.module.promotion.dal.dataobject.combination.CombinationActivityDO;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
-import org.apache.ibatis.annotations.Select;
 
 import java.util.Collection;
 import java.util.List;
+import java.util.Map;
 
 /**
  * 拼团活动 Mapper
@@ -43,30 +44,24 @@ public interface CombinationActivityMapper extends BaseMapperX<CombinationActivi
                 .last("LIMIT " + count));
     }
 
-    // TODO @puhui999：类似 BargainActivityMapper
-
     /**
-     * 获取指定 spu 编号最近参加的活动，每个 spuId 只返回一条记录
-     *
+     * 查询出指定 spuId 的 spu 参加的活动最接近现在的一条记录。多个的话，一个 spuId 对应一个最近的活动编号
      * @param spuIds spu 编号
      * @param status 状态
-     * @return 拼团活动列表
+     * @return 包含 spuId 和 activityId 的 map 对象列表
      */
-    @Select("<script> " + "SELECT p1.* " +
-            "FROM promotion_combination_activity p1 " +
-            "INNER JOIN ( " +
-            "  SELECT spu_id, MAX(DISTINCT create_time) AS max_create_time " +
-            "  FROM promotion_combination_activity " +
-            "  WHERE spu_id IN " +
-            "<foreach collection='spuIds' item='spuId' open='(' separator=',' close=')'>" +
-            "    #{spuId}" +
-            "</foreach>" +
-            "  GROUP BY spu_id " +
-            ") p2 " +
-            "ON p1.spu_id = p2.spu_id AND p1.create_time = p2.max_create_time AND p1.status = #{status} " +
-            "ORDER BY p1.create_time DESC;" +
-            " </script>")
-    List<CombinationActivityDO> selectListBySpuIdsAndStatus(@Param("spuIds") Collection<Long> spuIds, @Param("status") Integer status);
+    default List<Map<String, Object>> selectSpuIdAndActivityIdMapsBySpuIdsAndStatus(@Param("spuIds") Collection<Long> spuIds, @Param("status") Integer status) {
+        return selectMaps(new QueryWrapper<CombinationActivityDO>()
+                .select("spu_id AS spuId, MAX(DISTINCT(id)) AS activityId") // 时间越大 id 也越大 直接用 id
+                .in("spu_id", spuIds)
+                .eq("status", status)
+                .groupBy("spu_id"));
+    }
 
+    default List<CombinationActivityDO> selectListByIds(Collection<Long> ids) {
+        return selectList(new LambdaQueryWrapperX<CombinationActivityDO>()
+                .in(CombinationActivityDO::getId, ids)
+                .orderByDesc(CombinationActivityDO::getCreateTime));
+    }
 
 }

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/mysql/seckill/seckillactivity/SeckillActivityMapper.java

@@ -7,13 +7,14 @@ import cn.iocoder.yudao.framework.mybatis.core.query.LambdaQueryWrapperX;
 import cn.iocoder.yudao.module.promotion.controller.admin.seckill.vo.activity.SeckillActivityPageReqVO;
 import cn.iocoder.yudao.module.promotion.controller.app.seckill.vo.activity.AppSeckillActivityPageReqVO;
 import cn.iocoder.yudao.module.promotion.dal.dataobject.seckill.SeckillActivityDO;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
-import org.apache.ibatis.annotations.Select;
 
 import java.util.Collection;
 import java.util.List;
+import java.util.Map;
 
 /**
  * 秒杀活动 Mapper
@@ -59,29 +60,24 @@ public interface SeckillActivityMapper extends BaseMapperX<SeckillActivityDO> {
                 .apply(ObjectUtil.isNotNull(pageReqVO.getConfigId()), "FIND_IN_SET(" + pageReqVO.getConfigId() + ",config_ids) > 0"));
     }
 
-    // TODO @puhui999：类似 BargainActivityMapper
-
     /**
-     * 获取指定 spu 编号最近参加的活动，每个 spuId 只返回一条记录
-     *
+     * 查询出指定 spuId 的 spu 参加的活动最接近现在的一条记录。多个的话，一个 spuId 对应一个最近的活动编号
      * @param spuIds spu 编号
      * @param status 状态
-     * @return 秒杀活动列表
+     * @return 包含 spuId 和 activityId 的 map 对象列表
      */
-    @Select("<script> " + "SELECT p1.* " +
-            "FROM promotion_seckill_activity p1 " +
-            "INNER JOIN ( " +
-            "  SELECT spu_id, MAX(DISTINCT create_time) AS max_create_time " +
-            "  FROM promotion_seckill_activity " +
-            "  WHERE spu_id IN " +
-            "<foreach collection='spuIds' item='spuId' open='(' separator=',' close=')'>" +
-            "    #{spuId}" +
-            "</foreach>" +
-            "  GROUP BY spu_id " +
-            ") p2 " +
-            "ON p1.spu_id = p2.spu_id AND p1.create_time = p2.max_create_time AND p1.status = #{status} " +
-            "ORDER BY p1.create_time DESC;" +
-            " </script>")
-    List<SeckillActivityDO> selectListBySpuIdsAndStatus(@Param("spuIds") Collection<Long> spuIds, @Param("status") Integer status);
+    default List<Map<String, Object>> selectSpuIdAndActivityIdMapsBySpuIdsAndStatus(@Param("spuIds") Collection<Long> spuIds, @Param("status") Integer status) {
+        return selectMaps(new QueryWrapper<SeckillActivityDO>()
+                .select("spu_id AS spuId, MAX(DISTINCT(id)) AS activityId") // 时间越大 id 也越大 直接用 id
+                .in("spu_id", spuIds)
+                .eq("status", status)
+                .groupBy("spu_id"));
+    }
+
+    default List<SeckillActivityDO> selectListByIds(Collection<Long> ids) {
+        return selectList(new LambdaQueryWrapperX<SeckillActivityDO>()
+                .in(SeckillActivityDO::getId, ids)
+                .orderByDesc(SeckillActivityDO::getCreateTime));
+    }
 
 }

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/bargain/BargainActivityServiceImpl.java

@@ -1,5 +1,7 @@
 package cn.iocoder.yudao.module.promotion.service.bargain;
 
+import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.map.MapUtil;
 import cn.hutool.core.util.ObjUtil;
 import cn.hutool.core.util.ObjectUtil;
 import cn.iocoder.yudao.framework.common.enums.CommonStatusEnum;
@@ -20,12 +22,11 @@ import org.springframework.validation.annotation.Validated;
 
 import javax.annotation.Resource;
 import java.time.LocalDateTime;
-import java.util.Collection;
-import java.util.List;
-import java.util.Set;
+import java.util.*;
 
 import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
 import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.anyMatch;
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertSet;
 import static cn.iocoder.yudao.module.product.enums.ErrorCodeConstants.SKU_NOT_EXISTS;
 import static cn.iocoder.yudao.module.promotion.enums.ErrorCodeConstants.*;
 
@@ -178,7 +179,13 @@ public class BargainActivityServiceImpl implements BargainActivityService {
 
     @Override
     public List<BargainActivityDO> getBargainActivityBySpuIdsAndStatus(Collection<Long> spuIds, Integer status) {
-        return bargainActivityMapper.selectListBySpuIdsAndStatus(spuIds, status);
+        // 1.查询出指定 spuId 的 spu 参加的活动最接近现在的一条记录。多个的话，一个 spuId 对应一个最近的活动编号
+        List<Map<String, Object>> spuIdAndActivityIdMaps = bargainActivityMapper.selectSpuIdAndActivityIdMapsBySpuIdsAndStatus(spuIds, status);
+        if (CollUtil.isEmpty(spuIdAndActivityIdMaps)) {
+            return Collections.emptyList();
+        }
+        // 2.查询活动详情
+        return bargainActivityMapper.selectListByIds(convertSet(spuIdAndActivityIdMaps, map -> MapUtil.getLong(map, "activityId")));
     }
 
 }

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/combination/CombinationActivityServiceImpl.java

@@ -1,6 +1,7 @@
 package cn.iocoder.yudao.module.promotion.service.combination;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.map.MapUtil;
 import cn.hutool.core.util.ObjectUtil;
 import cn.iocoder.yudao.framework.common.enums.CommonStatusEnum;
 import cn.iocoder.yudao.framework.common.pojo.PageParam;
@@ -25,12 +26,12 @@ import org.springframework.validation.annotation.Validated;
 
 import javax.annotation.Resource;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 
 import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
-import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertMap;
-import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.filterList;
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.*;
 import static cn.iocoder.yudao.module.product.enums.ErrorCodeConstants.SKU_NOT_EXISTS;
 import static cn.iocoder.yudao.module.product.enums.ErrorCodeConstants.SPU_NOT_EXISTS;
 import static cn.iocoder.yudao.module.promotion.enums.ErrorCodeConstants.*;
@@ -228,7 +229,13 @@ public class CombinationActivityServiceImpl implements CombinationActivityServic
 
     @Override
     public List<CombinationActivityDO> getCombinationActivityBySpuIdsAndStatus(Collection<Long> spuIds, Integer status) {
-        return combinationActivityMapper.selectListBySpuIdsAndStatus(spuIds, status);
+        // 1.查询出指定 spuId 的 spu 参加的活动最接近现在的一条记录。多个的话，一个 spuId 对应一个最近的活动编号
+        List<Map<String, Object>> spuIdAndActivityIdMaps = combinationActivityMapper.selectSpuIdAndActivityIdMapsBySpuIdsAndStatus(spuIds, status);
+        if (CollUtil.isEmpty(spuIdAndActivityIdMaps)) {
+            return Collections.emptyList();
+        }
+        // 2.查询活动详情
+        return combinationActivityMapper.selectListByIds(convertSet(spuIdAndActivityIdMaps, map -> MapUtil.getLong(map, "activityId")));
     }
 
 }

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/seckill/SeckillActivityServiceImpl.java

@@ -1,6 +1,8 @@
 package cn.iocoder.yudao.module.promotion.service.seckill;
 
+import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.collection.CollectionUtil;
+import cn.hutool.core.map.MapUtil;
 import cn.hutool.core.util.ObjectUtil;
 import cn.iocoder.yudao.framework.common.enums.CommonStatusEnum;
 import cn.iocoder.yudao.framework.common.pojo.PageResult;
@@ -27,6 +29,7 @@ import org.springframework.validation.annotation.Validated;
 
 import javax.annotation.Resource;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 
@@ -312,7 +315,13 @@ public class SeckillActivityServiceImpl implements SeckillActivityService {
 
     @Override
     public List<SeckillActivityDO> getSeckillActivityBySpuIdsAndStatus(Collection<Long> spuIds, Integer status) {
-        return seckillActivityMapper.selectListBySpuIdsAndStatus(spuIds, status);
+        // 1.查询出指定 spuId 的 spu 参加的活动最接近现在的一条记录。多个的话，一个 spuId 对应一个最近的活动编号
+        List<Map<String, Object>> spuIdAndActivityIdMaps = seckillActivityMapper.selectSpuIdAndActivityIdMapsBySpuIdsAndStatus(spuIds, status);
+        if (CollUtil.isEmpty(spuIdAndActivityIdMaps)) {
+            return Collections.emptyList();
+        }
+        // 2.查询活动详情
+        return seckillActivityMapper.selectListByIds(convertSet(spuIdAndActivityIdMaps, map -> MapUtil.getLong(map, "activityId")));
     }
 
 }