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…zation [REFACTOR] Querydsl을 이용한 쿼리 최적화
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13 changes: 13 additions & 0 deletions
13
umbba-domain/src/main/java/sopt/org/umbba/domain/config/jpa/JpaConfig.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,14 +1,27 @@ | ||
| package sopt.org.umbba.domain.config.jpa; | ||
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| import org.springframework.boot.autoconfigure.domain.EntityScan; | ||
| import org.springframework.context.annotation.Bean; | ||
| import org.springframework.context.annotation.Configuration; | ||
| import org.springframework.data.jpa.repository.config.EnableJpaAuditing; | ||
| import org.springframework.data.jpa.repository.config.EnableJpaRepositories; | ||
| import sopt.org.umbba.domain.UmbbaDomainRoot; | ||
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|
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| import com.querydsl.jpa.impl.JPAQueryFactory; | ||
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| import javax.persistence.EntityManager; | ||
| import javax.persistence.PersistenceContext; | ||
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| @Configuration | ||
| @EntityScan(basePackageClasses = {UmbbaDomainRoot.class}) | ||
| @EnableJpaRepositories(basePackageClasses = {UmbbaDomainRoot.class}) | ||
| @EnableJpaAuditing | ||
| public class JpaConfig { | ||
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| @PersistenceContext | ||
| private EntityManager em; | ||
| @Bean | ||
| public JPAQueryFactory jpaQueryFactory() { | ||
| return new JPAQueryFactory(em); | ||
| } | ||
| } |
85 changes: 41 additions & 44 deletions
85
umbba-domain/src/main/java/sopt/org/umbba/domain/domain/parentchild/dao/ParentchildDao.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,78 +1,75 @@ | ||
| package sopt.org.umbba.domain.domain.parentchild.dao; | ||
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| import com.querydsl.core.types.dsl.BooleanExpression; | ||
| import com.querydsl.jpa.impl.JPAQueryFactory; | ||
| import com.querydsl.jpa.JPAExpressions; | ||
| import lombok.RequiredArgsConstructor; | ||
| import lombok.extern.slf4j.Slf4j; | ||
| import org.springframework.stereotype.Repository; | ||
| import sopt.org.umbba.domain.domain.parentchild.Parentchild; | ||
| import sopt.org.umbba.domain.domain.user.QUser; | ||
| import sopt.org.umbba.domain.domain.user.User; | ||
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| import javax.persistence.EntityManager; | ||
| import javax.persistence.NoResultException; | ||
| import javax.persistence.PersistenceContext; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.Optional; | ||
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| import static sopt.org.umbba.domain.domain.parentchild.QParentchild.parentchild; | ||
| import static sopt.org.umbba.domain.domain.user.QUser.user; | ||
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| @Slf4j | ||
| @Repository | ||
| @RequiredArgsConstructor | ||
| public class ParentchildDao { | ||
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| @PersistenceContext | ||
| private EntityManager em; | ||
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| private final JPAQueryFactory queryFactory; | ||
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| public Optional<Parentchild> findByUserId(Long userId) { | ||
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| String jpql = "SELECT pc FROM Parentchild pc " + | ||
| "JOIN User u ON u.parentChild = pc " + | ||
| "WHERE u.id = :id"; | ||
| return Optional.ofNullable(queryFactory | ||
| .selectFrom(parentchild) | ||
| .leftJoin(user.parentChild, parentchild) | ||
| .where( | ||
| userIdEq(userId) | ||
| ) | ||
| .fetchOne()); | ||
| } | ||
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| try { | ||
| Parentchild parentchild = em.createQuery(jpql, Parentchild.class) | ||
| .setParameter("id", userId) | ||
| .getSingleResult(); | ||
| return Optional.ofNullable(parentchild); | ||
| public Optional<User> findMatchUserByUserId(Long userId) { | ||
|
|
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| } catch (NoResultException e) { | ||
| return Optional.empty(); | ||
| } finally { | ||
| em.close(); | ||
| } | ||
| QUser uc = new QUser("uc"); | ||
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| return Optional.ofNullable(queryFactory | ||
| .select(user) | ||
| .from(user) | ||
| .join(uc).on(uc.parentChild.eq(user.parentChild)) | ||
| .where(uc.id.eq(userId).and(uc.id.ne(user.id))) | ||
| .fetchOne()); | ||
| } | ||
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| public Optional<User> findMatchUserByUserId(Long userId) { | ||
| public List<String> findFcmTokensById(Long parentchildId) { | ||
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| String jpql = "SELECT u FROM User u " + | ||
| "JOIN User uc ON uc.parentChild = u.parentChild " + | ||
| "WHERE uc.id = :id AND uc.id != u.id"; | ||
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| try { | ||
| User user = em.createQuery(jpql, User.class) | ||
| .setParameter("id", userId) | ||
| .getSingleResult(); | ||
| return Optional.ofNullable(user); | ||
| } catch (NoResultException e) { | ||
| return Optional.empty(); | ||
| } finally { | ||
| em.close(); | ||
| } | ||
| return queryFactory | ||
| .select(user.fcmToken) | ||
| .from(user) | ||
| .leftJoin(user.parentChild, parentchild) | ||
| .where( | ||
| parentchildIdEq(parentchildId) | ||
| ) | ||
| .fetch(); | ||
| } | ||
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| public List<String> findFcmTokensById(Long parentchildId) { | ||
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| String jpql = "SELECT u.fcmToken FROM User u " + | ||
| "JOIN Parentchild pc ON pc.id = u.parentChild.id " + | ||
| "WHERE pc.id = :id"; | ||
|
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| try { | ||
| return em.createQuery(jpql, String.class) | ||
| .setParameter("id", parentchildId) | ||
| .getResultList(); | ||
| } catch (NoResultException e) { | ||
| return new ArrayList<>(); | ||
| } finally { | ||
| em.close(); | ||
| } | ||
| private BooleanExpression userIdEq(Long userId) { | ||
| return userId != null ? user.id.eq(userId) : null; | ||
| } | ||
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| private BooleanExpression parentchildIdEq(Long parentchildId) { | ||
| return parentchildId != null ? parentchild.id.eq(parentchildId) : null; | ||
| } | ||
|
|
||
| } |
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