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Оптимизация работы с БД

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This commit is contained in:
sshkurov
2022-02-05 04:03:41 +03:00
parent d255584555
commit 70449e435a
6 changed files with 34 additions and 24 deletions
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20
src/main/java/ru/serega6531/packmate/repository/StreamRepository.java
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@@ -1,12 +1,11 @@
package ru.serega6531.packmate.repository;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.data.jpa.repository.Modifying;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.jpa.repository.*;
import ru.serega6531.packmate.model.Packet;
import ru.serega6531.packmate.model.Stream;
import java.util.Optional;
import javax.persistence.QueryHint;
import java.util.List;
public interface StreamRepository extends JpaRepository<Stream, Long>, JpaSpecificationExecutor<Stream> {
@@ -16,11 +15,12 @@ public interface StreamRepository extends JpaRepository<Stream, Long>, JpaSpecif
long deleteByEndTimestampBeforeAndFavoriteIsFalse(long threshold);
@Query("SELECT s FROM Stream s " +
"JOIN FETCH s.packets AS packets " +
"LEFT JOIN FETCH packets.matches " +
"WHERE s.id = :id"
@Query("SELECT DISTINCT p FROM Packet p " +
"LEFT JOIN FETCH p.matches " +
"WHERE p.stream.id = :streamId " +
"ORDER BY p.id"
)
Optional<Stream> getStreamWithPackets(long id);
@QueryHints(@QueryHint(name = org.hibernate.jpa.QueryHints.HINT_PASS_DISTINCT_THROUGH, value = "false"))
List<Packet> getPackets(long streamId);
}