gold_java/src/main/java/com/example/demo/mapper/ActivityMapper.java

package com.example.demo.mapper;



import com.example.demo.domain.entity.Activity;
import org.apache.ibatis.annotations.*;

import java.util.List;

@Mapper
public interface ActivityMapper {

    //增加活动信息
    @Insert({"insert into activity",
            "(admin_id,start_time,end_time,recharge_ratio,activity_name,activity_flag,create_time) " ,
            "values",
            "(#{adminId},#{startTime},#{endTime},#{rechargeRatio},#{activityName},1,now())"
    })
   @Options(useGeneratedKeys = true,keyColumn = "activity_id",keyProperty = "activityId")
    int add(Activity activity);


//   修改活动信息
   @Update({
           "<script>",
           "update activity",
           "<set>",
           "<if test='dept != null '>dept=#{dept},</if>",
           "<if test='startTime != null '>start_time=#{startTime},</if>",
           "<if test='adminId != null '>admin_id=#{adminId},</if>",
           "<if test='endTime != null '>end_time=#{endTime},</if>",
           "<if test='rechargeRatio != null '>recharge_ratio=#{rechargeRatio},</if>",
           "<if test='activityName != null and activityName.length>0'>activity_name=#{activityName},</if>",
           "<if test='activityFlag != null'>`activity_flag`=#{activityFlag},</if>",
           "<if test='status != null'>`status`=#{status},</if>",
           "</set>",
           "where activity_id=#{activityId}",
           "</script>"
          })
      int  edit(Activity activity);


   //查询--根据活动id查询活动信息
    @Select({
            "select activity_id from activity where activity_id=#{activityId}"
    })
    Activity selectById(Integer activityId);

    //模糊查询--根据活动id查询活动信息
    @Select({
            "<script>",
            "SELECT activity.*, admin.name FROM activity",
            "INNER JOIN admin ON activity.admin_id = admin.admin_id",
            "<where>",
            "activity.activity_flag = 1",
            "<if test='startDate != null and endDate != null'>",
            "AND activity.create_time BETWEEN #{startDate} AND #{endDate}",
            "</if>",
            "<if test='activityName != null and activityName.trim().length() > 0'>",
            "AND activity.activity_name LIKE CONCAT('%', #{activityName}, '%')",
            "</if>",
            "<if test='activityId != null'>",
            "AND activity.activity_id = #{activityId}",
            "</if>",
            "</where>",
            "ORDER BY activity.create_time DESC,activity.start_time DESC",
            "</script>"
    })
    List<Activity> select(Activity activity);
    //


}