#Spring #MongoDB #mlab

MongoDB 2장 mlab 무료 클라우드

2장에 이어서 글을 간단 몽고 DB CRUD를 진행해보자

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3장 MongoDB 3장 간단 CRUD with Spring

1. UserRepository

아래처럼 findByUserIdAnd~~~ 이런식으로 하는 부분이.. 개인적으로 직관적이긴 하나 너무 길어지면 보기 힘들다 생각한다. 다음 4장에서 mongodb-query-dsl을 적용 할 예정

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public interface UserRepository extends MongoRepository<UserCollection, String> {

  Optional<UserCollection> findByUserId(String userId);
}

2. UserService

NotFoundException과 UniqueException은 CustomException임을 미리 공유

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@Service
public class UserService {

  private final UserRepository userRepository;

  public UserService(UserRepository userRepository) {
    this.userRepository = userRepository;
  }

  @Transactional
  public void createUser(UserSignUpRequest req) {

    userRepository
        .findByUserId(req.getUserId())
        .ifPresent(
            user -> {
              throw new UniqueException("already user");
            });

    final String id = req.getUserType() + UUID.randomUUID().toString();
    UserCollection userCollection =
        UserCollection.builder()
            .id(id)
            .userId(req.getUserId())
            .userName(req.getUserName())
            .email(req.getEmail())
            .address(req.getAddress())
            .age(req.getAge())
            .build();

    userRepository.save(userCollection);
  }

  public UserDto getUserData(String userId) {

    UserCollection userCollection =
        userRepository
            .findByUserId(userId)
            .orElseThrow(() -> new NotFoundException("user data is not found"));

    return UserDto.toUserDto(userCollection);
  }

  @Transactional
  public void deleteUser(String userId) {
    UserCollection userCollection =
        userRepository
            .findByUserId(userId)
            .orElseThrow(() -> new NotFoundException("user data is not found"));

    userCollection.setIsDeleted(1);
    userRepository.save(userCollection);
  }
}

3. UserController

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@RestController
@RequestMapping("/users")
public class UserController {
  private final UserService userService;

  public UserController(UserService userService) {
    this.userService = userService;
  }

  @ResponseStatus(HttpStatus.CREATED)
  @PostMapping
  public void createUser(@RequestBody UserSignUpRequest userSignUpRequest) {

    userService.createUser(userSignUpRequest);
  }

  @GetMapping
  public UserDto user(@RequestParam("userId") String userId) {

    return userService.getUserData(userId);
  }

  @ResponseStatus(HttpStatus.NO_CONTENT)
  @DeleteMapping("/{userId}")
  public void updateUser(@PathVariable("userId") String userId) {

    userService.deleteUser(userId);
  }
}

사실.. 딱히 쓸말이 없다 빠르게. 다음 4장에서 audit config 적용과 mongodb-querydsl을 적용해보자

#Spring #MongoDB #mlab