[JPA] maven에서 querydsl Q class 생성

maven에서 querydsl Q class 생성

maven 환경에서 querydsl 를 사용하려고 했는데 Q class가 안생겨서 삽질했던 경험을 적어본다.

pom.xml

<dependencies>
    <!-- other dependency  -->  

    <dependency>  
      <groupId>com.querydsl</groupId>  
      <artifactId>querydsl-apt</artifactId>  
      <version>5.0.0</version>  
    </dependency>  

    <dependency>  
      <groupId>com.querydsl</groupId>  
      <artifactId>querydsl-jpa</artifactId>  
      <version>5.0.0</version>  
    </dependency>  
    <!-- other dependency -->

</dependencies>


<plugins>
    <plugin>  
      <groupId>com.mysema.maven</groupId>  
      <artifactId>apt-maven-plugin</artifactId>  
      <version>1.1.3</version>  
      <executions>    
          <execution>      
              <goals>        
                  <goal>process</goal>  
              </goals>      
              <configuration>        
                  <outputDirectory>target/generated-sources/java</outputDirectory>  
                  <processor>com.querydsl.apt.jpa.JPAAnnotationProcessor</processor> 
              </configuration>    
          </execution>  
      </executions>
    </plugin>
</plugins>

처음에 이렇게 설정했는데 Q클래스가 생기지 않았다.

plugin에서 Entity 어노테이션을 Q클래스로 변경해주는데 아무설정을 안해주면 javax 패키지의 Entity만 찾는것이었다.

그래서 jakarta 패키지를 찾도록 설정을 하나 추가해야한다.

<dependency>  
  <groupId>com.querydsl</groupId>  
  <artifactId>querydsl-apt</artifactId>  
  <version>5.0.0</version>  
  <classifier>jakarta</classifier>  
</dependency>

요부분을 classifier를 jakarta로 설정해주면 된다.

JPAQueryFactory를 빈으로 등록하려 할때 EntityManager를 주입시키는데 이때도 jakarta 패키지의 EntityManager를 주입시키기 위해서는 다음과 같은 설정이 필요하다.

<dependency>
    <groupId>com.querydsl</groupId>
    <artifactId>querydsl-jpa</artifactId>
    <version>5.0.0</version>
    <classifier>jakarta</classifier>
</dependency>

최종 pom.xml

<dependencies>
    <!-- other dependency  -->  
    <dependency>  
      <groupId>com.querydsl</groupId>  
      <artifactId>querydsl-apt</artifactId>  
      <version>5.0.0</version>  
      <classifier>jakarta</classifier>
    </dependency>  

    <dependency>  
      <groupId>com.querydsl</groupId>  
      <artifactId>querydsl-jpa</artifactId>  
      <version>5.0.0</version>  
      <classifier>jakarta</classifier>
    </dependency>  
    <!-- other dependency -->

</dependencies>


<plugins>
    <plugin>  
      <groupId>com.mysema.maven</groupId>  
      <artifactId>apt-maven-plugin</artifactId>  
      <version>1.1.3</version>  
      <executions>    
          <execution>      
              <goals>        
                  <goal>process</goal>  
              </goals>      
              <configuration>        
                  <outputDirectory>target/generated-sources/java</outputDirectory>  
                  <processor>com.querydsl.apt.jpa.JPAAnnotationProcessor</processor> 
              </configuration>    
          </execution>  
      </executions>
    </plugin>
</plugins>

참고

querydsl 이슈