package com.gkhy.fourierSpecialGasMonitor.repository;
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import com.gkhy.fourierSpecialGasMonitor.entity.GasCategory;
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import com.gkhy.fourierSpecialGasMonitor.entity.GasConcentration;
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import com.gkhy.fourierSpecialGasMonitor.entity.SummaryStats;
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import com.gkhy.fourierSpecialGasMonitor.entity.req.SummaryStatsReqDTO;
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import com.gkhy.fourierSpecialGasMonitor.entity.resp.SummaryStatsPageRespDTO;
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import org.springframework.data.jpa.repository.JpaRepository;
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import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
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import org.springframework.data.jpa.repository.Query;
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import org.springframework.data.repository.query.Param;
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import org.springframework.security.core.parameters.P;
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import org.springframework.stereotype.Repository;
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import javax.persistence.OrderBy;
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import java.time.LocalDateTime;
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import java.util.List;
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@Repository
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public interface GasConcentrationRepository extends JpaRepository<GasConcentration,Long>, JpaSpecificationExecutor<GasConcentration> {
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@OrderBy("dataReceivingTime desc")
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GasConcentration findTopByOrderByDataReceivingTimeDesc();
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List<GasConcentration> findAllByDataReceivingTimeBetweenOrderByDataReceivingTimeDesc(LocalDateTime startTime, LocalDateTime endTime);
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//分别查询temp,humidity,windSpeed,windDirection,pressure的平均值,最小值,最大值
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@Query("SELECT new com.gkhy.fourierSpecialGasMonitor.entity.SummaryStats(MIN(g.temp), MAX(g.temp), FUNCTION('ROUND', AVG(g.temp), 2)," +
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"MIN(g.humidity), MAX(g.humidity), FUNCTION('ROUND', AVG(g.humidity), 2), " +
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"MIN(g.windSpeed), MAX(g.windSpeed), FUNCTION('ROUND', AVG(g.windSpeed), 2), " +
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"MIN(g.windDirection), MAX(g.windDirection), FUNCTION('ROUND', AVG(g.windDirection), 2), " +
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"MIN(g.pressure), MAX(g.pressure), FUNCTION('ROUND', AVG(g.pressure), 2) " +
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") FROM GasConcentration g WHERE g.time BETWEEN :startTime AND :endTime")
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SummaryStats findStats(@Param("startTime") LocalDateTime startTime,@Param("endTime") LocalDateTime endTime);
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@Query("SELECT new com.gkhy.fourierSpecialGasMonitor.entity.resp.SummaryStatsPageRespDTO( " +
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"MAX(CASE WHEN :type = 'temp' THEN g.temp " +
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"WHEN :type = 'humidity' THEN g.humidity " +
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"WHEN :type = 'windSpeed' THEN g.windSpeed " +
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"WHEN :type = 'windDirection' THEN g.windDirection " +
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"WHEN :type = 'pressure' THEN g.pressure END), " +
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"MIN(CASE WHEN :type = 'temp' THEN g.temp " +
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"WHEN :type = 'humidity' THEN g.humidity " +
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"WHEN :type = 'windSpeed' THEN g.windSpeed " +
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"WHEN :type = 'windDirection' THEN g.windDirection " +
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"WHEN :type = 'pressure' THEN g.pressure END), " +
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"FUNCTION('ROUND', AVG(CASE WHEN :type = 'temp' THEN g.temp " +
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"WHEN :type = 'humidity' THEN g.humidity " +
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"WHEN :type = 'windSpeed' THEN g.windSpeed " +
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"WHEN :type = 'windDirection' THEN g.windDirection " +
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"WHEN :type = 'pressure' THEN g.pressure END), 2) " +
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") FROM GasConcentration g " +
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"WHERE g.time BETWEEN :startTime AND :endTime")
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SummaryStatsPageRespDTO findSummaryStatsByTypeAndTimeRange(@Param("type")String type,@Param("startTime") LocalDateTime startTime,@Param("endTime") LocalDateTime endTime);
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}
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