Querydsl 설정과 검증

build.gradle 에 주석을 참고해서 querydsl 설정 추가

plugins {
 id 'org.springframework.boot' version ‘2.2.2.RELEASE'
 id 'io.spring.dependency-management' version '1.0.8.RELEASE'
 //querydsl 추가
 id "com.ewerk.gradle.plugins.querydsl" version "1.0.10"
 id 'java'
}group = 'study'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'
configurations {
 compileOnly {
 extendsFrom annotationProcessor
 }
}
repositories {
 mavenCentral()
}
dependencies {
 implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
 implementation 'org.springframework.boot:spring-boot-starter-web'
 //querydsl 추가
 implementation 'com.querydsl:querydsl-jpa'
 compileOnly 'org.projectlombok:lombok'
 runtimeOnly 'com.h2database:h2'
 annotationProcessor 'org.projectlombok:lombok'
 testImplementation('org.springframework.boot:spring-boot-starter-test') {
 exclude group: ‘org.junit.vintage’, module: ‘junit-vintage-engine'
 }
}
test {
 useJUnitPlatform()
}
//querydsl 추가 시작
def querydslDir = "$buildDir/generated/querydsl"
querydsl {
 jpa = true querydslSourcesDir = querydslDir
}
sourceSets {
 main.java.srcDir querydslDir
}
configurations {
 querydsl.extendsFrom compileClasspath
}
compileQuerydsl {
 options.annotationProcessorPath = configurations.querydsl
}
//querydsl 추가 끝

 

 

plugins {
	id 'org.springframework.boot' version '2.7.2'
	id 'io.spring.dependency-management' version '1.0.12.RELEASE'
	id "com.ewerk.gradle.plugins.querydsl" version "1.0.10"
	id 'java'
}

group = 'study'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '11'

ext["hibernate.version"] = "5.6.5.Final"

configurations {
	compileOnly {
		extendsFrom annotationProcessor
	}
}

repositories {
	mavenCentral()
}

dependencies {

	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
	implementation 'org.springframework.boot:spring-boot-starter-web'
	compileOnly 'org.projectlombok:lombok'
	runtimeOnly 'com.h2database:h2'
	annotationProcessor 'org.projectlombok:lombok'
	testImplementation 'org.springframework.boot:spring-boot-starter-test'

	implementation 'com.querydsl:querydsl-jpa'
	annotationProcessor "com.querydsl:querydsl-apt:${dependencyManagement.importedProperties['querydsl.version']}:jpa"
	annotationProcessor "jakarta.annotation:jakarta.annotation-api"
	annotationProcessor "jakarta.persistence:jakarta.persistence-api"
}

tasks.named('test') {
	useJUnitPlatform()
}

def querydslDir = "$buildDir/generated/querydsl"

querydsl {
	jpa = true
	querydslSourcesDir = querydslDir
}

sourceSets {
	main.java.srcDir querydslDir
}

configurations {
	querydsl.extendsFrom compileClasspath
}

compileQuerydsl {
	options.annotationProcessorPath = configurations.querydsl
}

 

 

 

Querydsl 환경설정 검증

검증용 엔티티 생성

package study.querydsl.entity;
import lombok.Getter;
import lombok.Setter;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
@Entity
@Getter @Setter
public class Hello {
 @Id @GeneratedValue
 private Long id;
}

 

 

검증용 Q 타입 생성

Gradle IntelliJ 사용법

Gradle ▶ Tasks ▶ build ▶ clean
Gradle ▶ Tasks ▶ other ▶ compileQueryds

 

 

 

 

Gradle 콘솔 사용법

gradlew clean compileQuerydsl

 

 

 

Q 타입 생성 확인

build ▶ generated ▶ querydsl
study.querydsl.entity.QHello.java 파일이 생성되어 있어야 함

 

 

 

참고: Q타입은 컴파일 시점에 자동 생성되므로 버전관리(GIT)에 포함하지 않는 것이 좋다. 앞서 설정에서 생성 위치를 gradle build 폴더 아래 생성되도록 했기 때문에 이 부분도 자연스럽게 해결된다.

(대부분 gradle build 폴더를 git에 포함하지 않는다.)

 

 

 

테스트 케이스로 실행 검증

package study.querydsl;

import com.querydsl.jpa.impl.JPAQueryFactory;
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 study.querydsl.entity.Hello;
import study.querydsl.entity.QHello;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

@SpringBootTest
@Transactional
class QuerydslApplicationTests {

	@PersistenceContext
	EntityManager em;

	@Test
	void contextLoads() {
		Hello hello = new Hello();
		em.persist(hello);

		JPAQueryFactory query = new JPAQueryFactory(em);
		QHello qHello = QHello.hello;

		Hello result = query
				.selectFrom(qHello)
				.fetchOne();

		Assertions.assertThat(result).isEqualTo(hello);
		Assertions.assertThat(result.getId()).isEqualTo(hello.getId());
	}

}

 

 

 

 

 

 

출처 : 김영한 JPA 스프링 데이터 강의