[Querydsl 1편] querydsl 상속, 구현 없이 환경 세팅

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목차는 Querydsl 목차 에 있습니다.

[Querydsl 1편] querydsl 상속, 구현 없이 환경 세팅

spring boot, querydsl 상속, 구현 없이 환경 세팅

• 기존에 querydsl 을 구현해줄려면 interface 를 만들어야하고 구현체를 만들어야 했습니다.
• querydsl 을 사용할 때 상속, 구현없이 환경 세팅하는 법에 대해서 정리했습니다.

public interface MemberRepositoryCustom {
    void test();
}

public class MemberRepositoryImpl implements MemberRepositoryCustom {
    xxx
    xxx
    xxx         
}

source

• 아래와 같이 소스를 작성한다면 generated 폴더에 Qxxxxx 파일이 만들어집니다.

	// build.gradle
	buildscript {
	ext {
	springBootVersion = '2.4.5'
	querydslPluginVersion = '1.0.10' // 플러그인 버전
	}
	repositories {
	maven { url "https://plugins.gradle.org/m2/" } // 플러그인 저장소
	}
	dependencies {
	classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
	classpath("gradle.plugin.com.ewerk.gradle.plugins:querydsl-plugin:${querydslPluginVersion}")
	}
	}
	plugins {
	id 'java'
	id 'org.springframework.boot' version '2.4.5'
	id 'io.spring.dependency-management' version '1.0.11.RELEASE'
	}
	group 'org.example'
	version '1.0-SNAPSHOT'
	repositories {
	mavenCentral()
	}
	dependencies {
	implementation group: 'org.springframework.boot', name: 'spring-boot-starter-data-jpa'
	// Querydsl start
	implementation 'com.querydsl:querydsl-jpa'
	annotationProcessor "com.querydsl:querydsl-apt:${dependencyManagement.importedProperties['querydsl.version']}:jpa"
	annotationProcessor "jakarta.persistence:jakarta.persistence-api"
	annotationProcessor "jakarta.annotation:jakarta.annotation-api"
	// Querydsl end
	}
	def generated = "src/main/generated"
	sourceSets {
	main.java.srcDirs += [ generated ]
	}
	tasks.withType(JavaCompile) {
	options.annotationProcessorGeneratedSourcesDirectory = file(generated)
	}
	clean.doLast {
	file(generated).deleteDir()
	}
	//--------------------------------------------------------------------------------
	// Configuration
	@Configuration
	public class QuerydslConfig {
	@PersistenceContext
	private EntityManager entityManager;
	@Bean
	public JPAQueryFactory jpaQueryFactory() {
	return new JPAQueryFactory(entityManager);
	}
	}
	//--------------------------------------------------------------------------------
	// Domain, Repository
	@Entity
	@NoArgsConstructor(access = AccessLevel.PROTECTED)
	@Getter
	public class Member {
	@Id
	@Column(name = "member_id")
	@GeneratedValue(strategy = GenerationType.AUTO)
	private Long id;
	@Column
	private String name;
	@Builder
	public Member(String name) {
	this.name = name;
	}
	}
	@Repository
	@RequiredArgsConstructor
	public class MemberQueryRepository {
	private final JPAQueryFactory jpaQueryFactory;
	public List<Member> findByName(String name) {
	return jpaQueryFactory
	.selectFrom(member)
	.where(member.name.eq(name))
	.fetch();
	}
	}
	//--------------------------------------------------------------------------------
	// Test
	@RunWith(SpringRunner.class)
	@SpringBootTest
	public class MemberQueryRepositoryTest {
	@Autowired
	private MemberRepository memberRepository;
	@Autowired
	private MemberQueryRepository memberQueryRepository;
	@Before
	public void setUp() {
	Member member = Member.builder()
	.name("test")
	.build();
	memberRepository.save(member);
	}
	@Test
	public void member_querydsl_테스트 () throws Exception {
	List<Member> list = memberQueryRepository.findByName("test");
	Assert.assertEquals(1, list.size());
	}
	}

view raw QuerydslSetting.java hosted with ❤ by GitHub

결론

• qerydsl 사용할 때, interface, 구현체를 만들지 않고 사용하기에 클래스 수를 줄일 수 있습니다.

reference

• https://gaemi606.tistory.com/entry/Spring-Boot-Querydsl-추가-Gradle-7x?category=745027