JPA 연관 관계 id값 질문

Question

JPA 연관관계를 맺어서 게시글과 댓글을 구현하는데 각 테이블이 1번으로 시작하는게 아니라 이어지는 상황이 생겨서 이게 정상적인가 의문이 들어서 질문을 드립니다.코드@Entity(name = "board") @ToString @Table @Getter @NoArgsConstructor public class BoardEntity extends BaseEntity{ @Id @GeneratedValue @Column(name = "board_id") private Long boardId; private String title; private String contents; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "member_id") private MemberEntity member; @OneToMany(mappedBy = "boardEntity", cascade = CascadeType.ALL) // 댓글 정렬 @OrderBy("id asc") private List comments = new ArrayList<>(); @Builder public BoardEntity(Long boardId, String title, String contents, MemberEntity member, List comments) { this.boardId = boardId; this.title = title; this.contents = contents; this.member = member; this.comments = comments; } } @Entity(name = "comment") @Table @Getter @NoArgsConstructor public class CommentEntity extends BaseTimeEnity{ @Id @GeneratedValue @Column(name = "comment_id") private Long id; private String comment; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "board_id") private BoardEntity boardEntity; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "member_id") private MemberEntity memberEntity; @Builder public CommentEntity(Long id, String comment, BoardEntity boardEntity, MemberEntity memberEntity) { this.id = id; this.comment = comment; this.boardEntity = boardEntity; this.memberEntity = memberEntity; } } @RequiredArgsConstructor @Service @Transactional public class CommentService { private final CommentRepository commentRepository; private final MemberRepository memberRepository; private final BoardRepository boardRepository; // 댓글 작성 public ResponseEntity save(Long boardId, CommentDTO commentDTO, String memberEmail) { MemberEntity findMember = memberRepository.findByMemberEmail(memberEmail); BoardEntity findBoard = boardRepository.findById(boardId) .orElseThrow(EntityNotFoundException::new); List commentEntities = new ArrayList<>(); if(findMember != null) { CommentEntity commentEntity = CommentEntity.builder() .comment(commentDTO.getComments()) .boardEntity(findBoard) .memberEntity(findMember) .build(); CommentEntity saveComment = commentRepository.save(commentEntity); commentEntities.add(saveComment); findBoard = BoardEntity.builder() .boardId(findBoard.getBoardId()) .title(findBoard.getTitle()) .contents(findBoard.getContents()) .member(findMember) .comments(commentEntities) .build(); boardRepository.save(findBoard); CommentDTO commentDTO1 = CommentDTO.toCommentDTO(saveComment); return ResponseEntity.ok().body(commentDTO1); } else { return ResponseEntity.notFound().build(); } } // 댓글 삭제 public String remove(Long boardId, Long commentId, String memberEmail) { BoardEntity findBoard = boardRepository.findById(boardId) .orElseThrow(EntityNotFoundException::new); CommentEntity findComment = commentRepository.findById(commentId) .orElseThrow(EntityNotFoundException::new); MemberEntity findMember = memberRepository.findByMemberEmail(memberEmail); boolean equalsEmail = findMember.getMemberEmail().equals(findComment.getMemberEntity().getMemberEmail()); boolean equalsId = findComment.getBoardEntity().getBoardId().equals(findBoard.getBoardId()); if(equalsEmail && equalsId) { commentRepository.deleteById(findComment.getId()); return "댓글을 삭제했습니다."; } else { return "해당 이메일의 댓글이 아닙니다."; } } // 댓글 수정 public ResponseEntity update(Long boardId, Long commentId, CommentDTO commentDTO, String memberEmail) { BoardEntity findBoard = boardRepository.findById(boardId) .orElseThrow(EntityNotFoundException::new); CommentEntity findComment = commentRepository.findById(commentId) .orElseThrow(EntityNotFoundException::new); MemberEntity findMember = memberRepository.findByMemberEmail(memberEmail); boolean equalsEmail = findMember.getMemberEmail().equals(findComment.getMemberEntity().getMemberEmail()); boolean equalsId = findComment.getBoardEntity().getBoardId().equals(findBoard.getBoardId()); List commentEntities = new ArrayList<>(); if(equalsEmail && equalsId) { findComment = CommentEntity.builder() .id(findComment.getId()) .comment(commentDTO.getComments()) .boardEntity(findBoard) .memberEntity(findMember) .build(); CommentEntity saveComment = commentRepository.save(findComment); commentEntities.add(saveComment); findBoard = BoardEntity.builder() .boardId(findBoard.getBoardId()) .contents(findBoard.getContents()) .title(findBoard.getTitle()) .member(findBoard.getMember()) .comments(commentEntities) .build(); boardRepository.save(findBoard); CommentDTO returnComment = CommentDTO.toCommentDTO(saveComment); return ResponseEntity.ok().body(returnComment); } else { return ResponseEntity.badRequest().body("일치하지 않습니다."); } } }

kebi · Answer

GeneratedValue Annotation의 옵션을 찾아보면 해결이 되실겁니다

JPA 연관 관계 id값 질문

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