diff --git a/querydsl/src/main/java/com/example/querydsl/QuerydslApplication.java b/querydsl/src/main/java/com/example/querydsl/QuerydslApplication.java index 16a510da..cdfe368f 100644 --- a/querydsl/src/main/java/com/example/querydsl/QuerydslApplication.java +++ b/querydsl/src/main/java/com/example/querydsl/QuerydslApplication.java @@ -1,7 +1,11 @@ package com.example.querydsl; +import com.querydsl.jpa.impl.JPAQueryFactory; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; +import org.springframework.context.annotation.Bean; + +import javax.persistence.EntityManager; @SpringBootApplication public class QuerydslApplication { @@ -10,4 +14,8 @@ public class QuerydslApplication { SpringApplication.run(QuerydslApplication.class, args); } + @Bean + JPAQueryFactory jpaQueryFactory(EntityManager em) { + return new JPAQueryFactory(em); + } } diff --git a/querydsl/src/main/java/com/example/querydsl/controller/InitMember.java b/querydsl/src/main/java/com/example/querydsl/controller/InitMember.java new file mode 100644 index 00000000..ce17b67d --- /dev/null +++ b/querydsl/src/main/java/com/example/querydsl/controller/InitMember.java @@ -0,0 +1,44 @@ +package com.example.querydsl.controller; + +import com.example.querydsl.entity.Member; +import com.example.querydsl.entity.Team; +import lombok.RequiredArgsConstructor; +import org.springframework.context.annotation.Profile; +import org.springframework.stereotype.Component; +import org.springframework.transaction.annotation.Transactional; + +import javax.annotation.PostConstruct; +import javax.persistence.EntityManager; +import javax.persistence.PersistenceContext; + +@Profile("local") +@Component +@RequiredArgsConstructor +public class InitMember { + + private final InitMEmberService initMEmberService; + + @PostConstruct + public void init() { + initMEmberService.init(); + } + + @Component + static class InitMEmberService { + @PersistenceContext + private EntityManager em; + + @Transactional + public void init() { + Team teamA = new Team("teamA"); + Team teamB = new Team("teamB"); + em.persist(teamA); + em.persist(teamB); + + for (int i = 0; i < 100; i++) { + Team selectedTeam = i % 2 == 0 ? teamA : teamB; + em.persist(new Member("member" + i, i, selectedTeam)); + } + } + } +} diff --git a/querydsl/src/main/java/com/example/querydsl/controller/MemberController.java b/querydsl/src/main/java/com/example/querydsl/controller/MemberController.java new file mode 100644 index 00000000..c9fe0761 --- /dev/null +++ b/querydsl/src/main/java/com/example/querydsl/controller/MemberController.java @@ -0,0 +1,22 @@ +package com.example.querydsl.controller; + +import com.example.querydsl.dto.MemberSearchCondition; +import com.example.querydsl.dto.MemberTeamDto; +import com.example.querydsl.repository.MemberJpaRepository; +import lombok.RequiredArgsConstructor; +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.RestController; + +import java.util.List; + +@RestController +@RequiredArgsConstructor +public class MemberController { + + private final MemberJpaRepository memberJpaRepository; + + @GetMapping("/v1/members") + public List searchMemberV1(MemberSearchCondition condition) { + return memberJpaRepository.search(condition); + } +} diff --git a/querydsl/src/main/java/com/example/querydsl/dto/MemberSearchCondition.java b/querydsl/src/main/java/com/example/querydsl/dto/MemberSearchCondition.java new file mode 100644 index 00000000..adc1e9af --- /dev/null +++ b/querydsl/src/main/java/com/example/querydsl/dto/MemberSearchCondition.java @@ -0,0 +1,12 @@ +package com.example.querydsl.dto; + +import lombok.Data; + +@Data +public class MemberSearchCondition { + + private String username; + private String teamName; + private Integer ageGoe; + private Integer ageLoe; +} diff --git a/querydsl/src/main/java/com/example/querydsl/dto/MemberTeamDto.java b/querydsl/src/main/java/com/example/querydsl/dto/MemberTeamDto.java new file mode 100644 index 00000000..06edc81c --- /dev/null +++ b/querydsl/src/main/java/com/example/querydsl/dto/MemberTeamDto.java @@ -0,0 +1,22 @@ +package com.example.querydsl.dto; + +import com.querydsl.core.annotations.QueryProjection; +import lombok.Data; + +@Data +public class MemberTeamDto { + private Long memberId; + private String username; + private int age; + private Long teamId; + private String teamName; + + @QueryProjection + public MemberTeamDto(Long memberId, String username, int age, Long teamId, String teamName) { + this.memberId = memberId; + this.username = username; + this.age = age; + this.teamId = teamId; + this.teamName = teamName; + } +} diff --git a/querydsl/src/main/java/com/example/querydsl/repository/MemberJpaRepository.java b/querydsl/src/main/java/com/example/querydsl/repository/MemberJpaRepository.java new file mode 100644 index 00000000..3cd29e47 --- /dev/null +++ b/querydsl/src/main/java/com/example/querydsl/repository/MemberJpaRepository.java @@ -0,0 +1,145 @@ +package com.example.querydsl.repository; + +import com.example.querydsl.dto.MemberSearchCondition; +import com.example.querydsl.dto.MemberTeamDto; +import com.example.querydsl.dto.QMemberTeamDto; +import com.example.querydsl.entity.Member; +import com.querydsl.core.BooleanBuilder; +import com.querydsl.core.types.dsl.BooleanExpression; +import com.querydsl.jpa.impl.JPAQueryFactory; +import org.springframework.stereotype.Repository; + +import javax.persistence.EntityManager; +import java.util.List; +import java.util.Optional; + +import static com.example.querydsl.entity.QMember.member; +import static com.example.querydsl.entity.QTeam.team; +import static org.springframework.util.StringUtils.hasText; + +@Repository +public class MemberJpaRepository { + + private final EntityManager em; + private final JPAQueryFactory queryFactory; + + public MemberJpaRepository(EntityManager em) { + this.em = em; + this.queryFactory = new JPAQueryFactory(em); + } + + public void save(Member member) { + em.persist(member); + } + + public Optional findById(Long id) { + Member findMember = em.find(Member.class, id); + return Optional.ofNullable(findMember); + } + + public List findAll() { + return em.createQuery("select m from Member m", Member.class) + .getResultList(); + } + + public List findAll_Querydsl() { + return queryFactory + .selectFrom(member) + .fetch(); + } + + public List findByUsername(String username) { + return em.createQuery("select m from Member m where m.username = :username", Member.class) + .setParameter("username", username) + .getResultList(); + } + + public List findByUsername_Querydsl(String username) { + return queryFactory + .selectFrom(member) + .where(member.username.eq(username)) + .fetch(); + } + + public List searchByBuilder(MemberSearchCondition condition) { + BooleanBuilder builder = new BooleanBuilder(); + if (hasText(condition.getUsername())) { + builder.and(member.username.eq(condition.getUsername())); + } + if (hasText(condition.getTeamName())) { + builder.and(team.name.eq(condition.getTeamName())); + } + if (condition.getAgeGoe() != null) { + builder.and(member.age.goe(condition.getAgeGoe())); + } + if (condition.getAgeLoe() != null) { + builder.and(member.age.loe(condition.getAgeLoe())); + } + + return queryFactory + .select(new QMemberTeamDto( + member.id.as("memberId"), + member.username, + member.age, + team.id.as("teamId"), + team.name.as("teamName"))) + .from(member) + .leftJoin(member.team, team) + .where(builder) + .fetch(); + } + + public List search(MemberSearchCondition condition) { + return queryFactory + .select(new QMemberTeamDto( + member.id.as("memberId"), + member.username, + member.age, + team.id.as("teamId"), + team.name.as("teamName"))) + .from(member) + .leftJoin(member.team, team) + .where( + usernameEq(condition.getUsername()), + teamNameEq(condition.getTeamName()), + ageGoe(condition.getAgeGoe()), + ageLoe(condition.getAgeLoe()) + ) + .fetch(); + } + + public List searchMember(MemberSearchCondition condition) { + return queryFactory + .selectFrom(member) + .leftJoin(member.team, team) + .where( + usernameEq(condition.getUsername()), + teamNameEq(condition.getTeamName()), + ageGoe(condition.getAgeGoe()), + ageLoe(condition.getAgeLoe()) + ) + .fetch(); + } + + private BooleanExpression ageBetween(int ageLoe, int ageGoe) { + return ageLoe(ageLoe).and(ageGoe(ageGoe)); + } + + private BooleanExpression usernameEq(String username) { + return hasText(username) ? member.username.eq(username) : null; + } + + private BooleanExpression teamNameEq(String teamName) { + return hasText(teamName) ? team.name.eq(teamName) : null; + } + + private BooleanExpression ageGoe(Integer ageGoe) { + return ageGoe != null ? member.age.goe(ageGoe) : null; + } + + private BooleanExpression ageLoe(Integer ageLoe) { + return ageLoe != null ? member.age.loe(ageLoe) : null; + } + + +} diff --git a/querydsl/src/main/resources/application.yml b/querydsl/src/main/resources/application.yml index 32c675cb..38370566 100644 --- a/querydsl/src/main/resources/application.yml +++ b/querydsl/src/main/resources/application.yml @@ -1,4 +1,7 @@ spring: + profiles: + active: local + datasource: url: jdbc:h2:tcp://localhost/~/Desktop/study/Study/querydsl/db username: sa diff --git a/querydsl/src/test/java/com/example/querydsl/repository/MemberJpaRepositoryTest.java b/querydsl/src/test/java/com/example/querydsl/repository/MemberJpaRepositoryTest.java new file mode 100644 index 00000000..ee8d2c8a --- /dev/null +++ b/querydsl/src/test/java/com/example/querydsl/repository/MemberJpaRepositoryTest.java @@ -0,0 +1,81 @@ +package com.example.querydsl.repository; + +import com.example.querydsl.dto.MemberSearchCondition; +import com.example.querydsl.dto.MemberTeamDto; +import com.example.querydsl.entity.Member; +import com.example.querydsl.entity.Team; +import org.assertj.core.api.Assertions; +import org.junit.jupiter.api.Test; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.transaction.annotation.Transactional; + +import javax.persistence.EntityManager; + +import java.util.List; + +import static org.assertj.core.api.Assertions.*; +import static org.junit.jupiter.api.Assertions.*; + +@SpringBootTest +@Transactional +class MemberJpaRepositoryTest { + + @Autowired + EntityManager em; + + @Autowired MemberJpaRepository memberJpaRepository; + + @Test + void basicTest() { + Member member = new Member("member1", 10); + memberJpaRepository.save(member); + + Member findMember = memberJpaRepository.findById(member.getId()).get(); + assertThat(findMember).isEqualTo(member); + + List result1 = memberJpaRepository.findAll(); + assertThat(result1).containsExactly(member); + + List result2 = memberJpaRepository.findByUsername("member1"); + assertThat(result2).containsExactly(member); + } + + @Test + void basicQuerydslTest() { + Member member = new Member("member1", 10); + memberJpaRepository.save(member); + + List result1 = memberJpaRepository.findAll_Querydsl(); + assertThat(result1).containsExactly(member); + + List result2 = memberJpaRepository.findByUsername_Querydsl("member1"); + assertThat(result2).containsExactly(member); + } + + @Test + void searchTest() { + Team teamA = new Team("teamA"); + Team teamB = new Team("teamB"); + em.persist(teamA); + em.persist(teamB); + + Member member1 = new Member("member1", 10, teamA); + Member member2 = new Member("member2", 20, teamA); + Member member3 = new Member("member3", 30, teamB); + Member member4 = new Member("member4", 40, teamB); + em.persist(member1); + em.persist(member2); + em.persist(member3); + em.persist(member4); + + MemberSearchCondition condition = new MemberSearchCondition(); + condition.setAgeGoe(35); + condition.setAgeLoe(40); + condition.setTeamName("teamB"); + + List result = memberJpaRepository.search(condition); + + assertThat(result).extracting("username").containsExactly("member4"); + } +} \ No newline at end of file diff --git a/querydsl/src/test/resources/application.yml b/querydsl/src/test/resources/application.yml new file mode 100644 index 00000000..af8a6611 --- /dev/null +++ b/querydsl/src/test/resources/application.yml @@ -0,0 +1,20 @@ +spring: + profiles: + active: test + + datasource: + url: jdbc:h2:tcp://localhost/~/Desktop/study/Study/querydsl/db + username: sa + password: + driver-class-name: org.h2.Driver + + jpa: + hibernate: + ddl-auto: create + properties: + hibernate: + format_sql: true + use_sql_comments: true + +logging.level: + org.hibernate.SQL: debug