[Server] 회원 도메인 개발

• 먼저 기억을 되살리기 위해 회원 도메인부터 개발해보자.

 

 

1.Member

@Entity
@Getter
public class Member {

    @Id
    @GeneratedValue
    private Long id;

    private String loginId;
    private String loginPw;

    public Member() {
    }

    public Member(String loginId, String loginPw) {
        this.loginId = loginId;
        this.loginPw = loginPw;
    }

}

 

 

2. MemberRepository

import java.util.List;
import java.util.Optional;

public interface MemberRepository {

    void saveMember(Member member);
    Optional<List<Member>> findAll();
    Optional<Member> findMember(Long id);
    Optional<Member> findMember(String loginId);
    void deleteMember(Long id);
    void deleteMember(String loginId);
}

import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Repository;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import java.util.List;
import java.util.Optional;

@Repository
@RequiredArgsConstructor
public class MemberRepositoryImpl implements MemberRepository{

    @PersistenceContext
    private final EntityManager em;


    @Override
    public void saveMember(Member member) {
        em.persist(member);
    }

    @Override
    public Optional<List<Member>> findAll() {
     return Optional.ofNullable(em.createQuery("select m from Member m", Member.class).getResultList());
    }

    @Override
    public Optional<Member> findMember(Long id) {
        return em.createQuery("select m from Member m where m.id = :id",Member.class)
                .setParameter("id", id)
                .getResultList().stream().findAny();
    }

    @Override
    public Optional<Member> findMember(String loginId) {
        return em.createQuery("select m from Member m where m.loginId = :loginId",Member.class)
                .setParameter("loginId", loginId)
                .getResultList().stream().findAny();
    }

    @Override
    public void deleteMember(Long id) {
        em.remove(findMember(id));
    }

    @Override
    public void deleteMember(String loginId) {
        em.remove(findMember(loginId));
    }
}

• JpaRepository를 상속받아 편하게 할 수 도 있지만.. 학습을 위해 순수 JPA를 사용했다.

 

3. MemberService

public interface MemberService {

    Member addMember(Member member);
    Member findMember(Long id);
    Member findMember(String loginId);
    void deleteMember(Long id);
    void deleteMember(String loginId);

}

import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.NoSuchElementException;

@Service
@RequiredArgsConstructor
@Transactional(readOnly = true)
public class MemberServiceImpl implements MemberService{

    private final MemberRepository memberRepository;

    @Override
    @Transactional
    public Member addMember(Member member) {
        memberRepository.saveMember(member);
        return member;
    }

    @Override
    public Member findMember(Long id) {
        return memberRepository.findMember(id).orElseThrow(NoSuchElementException::new);
    }

    @Override
    public Member findMember(String loginId) {
        return memberRepository.findMember(loginId).orElseThrow(NoSuchElementException::new);
    }

    @Override
    @Transactional
    public void deleteMember(Long id) {
        memberRepository.deleteMember(id);
    }

    @Override
    @Transactional
    public void deleteMember(String loginId) {
        memberRepository.deleteMember(loginId);
    }
}

 

4. 기타 설정

• h2 db 설정, hibernate 설정 및 log설정을 해주었다.

spring:
  datasource:
    url: jdbc:h2:tcp://localhost/~/commuteMap
    username: sa
    driver-class-name: org.h2.Driver

  jpa:
    hibernate:
      ddl-auto: create
    show-sql: true
    properties:
      hibernate:
        format_sql: true

logging.level:
  org.hibernate.SQL: debug

 

5. Test

import static org.assertj.core.api.Assertions.*;
import static org.junit.jupiter.api.Assertions.*;

@SpringBootTest
@Rollback(value = true)
class MemberServiceTest {

    @Autowired
    MemberRepository memberRepository;

    @Autowired
    MemberService memberService;

    @Autowired
    EntityManager em;

    /**
     * DB에 잘 저장되는지, 잘 불러와지는지 확인하기 위한 목적.
     */
    @Test
    @Transactional
    void crudTest(){
        //given
        Member member1 = new Member("loginId", "password");

        //when
        memberService.addMember(member1);
        
        //entityManager 초기화 -> 캐시삭제
        em.flush();
        em.clear();

        Member findMember = memberService.findMember(member1.getLoginId());
        
        //then
        assertThat(findMember.getLoginId()).isEqualTo(member1.getLoginId());
        assertThat(findMember.getLoginPw()).isEqualTo(member1.getLoginPw());

    }

}

 

6. GitHub: 220115 MemberDomain

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bsh6463/commuteMap