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querydsl: jpa + querydsl

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This commit is contained in:
haerong22
2021-09-09 01:51:15 +09:00
parent 85b0662097
commit a891b3b814
9 changed files with 357 additions and 0 deletions
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8
querydsl/src/main/java/com/example/querydsl/QuerydslApplication.java
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@@ -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);
}
}

44
querydsl/src/main/java/com/example/querydsl/controller/InitMember.java Normal file
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@@ -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));
}
}
}
}

22
querydsl/src/main/java/com/example/querydsl/controller/MemberController.java Normal file
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@@ -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<MemberTeamDto> searchMemberV1(MemberSearchCondition condition) {
return memberJpaRepository.search(condition);
}
}

12
querydsl/src/main/java/com/example/querydsl/dto/MemberSearchCondition.java Normal file
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@@ -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;
}

22
querydsl/src/main/java/com/example/querydsl/dto/MemberTeamDto.java Normal file
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@@ -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;
}
}

145
querydsl/src/main/java/com/example/querydsl/repository/MemberJpaRepository.java Normal file
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@@ -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<Member> findById(Long id) {
Member findMember = em.find(Member.class, id);
return Optional.ofNullable(findMember);
}
public List<Member> findAll() {
return em.createQuery("select m from Member m", Member.class)
.getResultList();
}
public List<Member> findAll_Querydsl() {
return queryFactory
.selectFrom(member)
.fetch();
}
public List<Member> findByUsername(String username) {
return em.createQuery("select m from Member m where m.username = :username", Member.class)
.setParameter("username", username)
.getResultList();
}
public List<Member> findByUsername_Querydsl(String username) {
return queryFactory
.selectFrom(member)
.where(member.username.eq(username))
.fetch();
}
public List<MemberTeamDto> 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<MemberTeamDto> 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<Member> 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;
}
}

3
querydsl/src/main/resources/application.yml
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@@ -1,4 +1,7 @@
spring:
profiles:
active: local
datasource:
url: jdbc:h2:tcp://localhost/~/Desktop/study/Study/querydsl/db
username: sa

81
querydsl/src/test/java/com/example/querydsl/repository/MemberJpaRepositoryTest.java Normal file
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@@ -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<Member> result1 = memberJpaRepository.findAll();
assertThat(result1).containsExactly(member);
List<Member> result2 = memberJpaRepository.findByUsername("member1");
assertThat(result2).containsExactly(member);
}
@Test
void basicQuerydslTest() {
Member member = new Member("member1", 10);
memberJpaRepository.save(member);
List<Member> result1 = memberJpaRepository.findAll_Querydsl();
assertThat(result1).containsExactly(member);
List<Member> 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<MemberTeamDto> result = memberJpaRepository.search(condition);
assertThat(result).extracting("username").containsExactly("member4");
}
}

20
querydsl/src/test/resources/application.yml Normal file
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@@ -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