큰 덩어리는 비슷한데 조금씩만 다른 DTO들을 호출할때마다 목적에 맞게 하나씩 만들어야하는지, 아니면 하나로 뭉쳐서 필요한것만 가져다쓰면 되는지..
매번 만들자니 파일만 쓸데없이 늘어남 + 이름 붙이기도 힘들고, 하나로 뭉치자니 입출력이 명확히 안보임 + 필요없는 필드들도 왔다갔다하는게 마음에 안들어서 고민을 하다가
DTO를 inner class로 만들면 깔끔하대서 해봤다. 나름 괜찮은 방법인듯!
/* ReviewDTO */
public class ReviewDTO {
@Getter
@Setter
/* Review Create할 때 쓸 DTO => ReviewDTO.Create */
public static class Create {
private Long tutoringId;
private String body;
private Long tagId;
}
@Getter
@Setter
/* Review Update할 때 쓸 DTO => ReviewDTO.Update */
public static class Update {
private String body;
private Long tagId;
}
@Getter
@Setter
/* Review Check할 때 쓸 DTO => ReviewDTO.Check */
public static class Check {
private Boolean isCompleted;
}
@Getter
@Setter
/* Review 반환할 때 쓸 DTO => ReviewDTO.Response */
public static class Response {
private Long id;
private String body;
private Boolean isCompleted;
private ReviewNoteDTO note;
private ReviewTagDTO tag;
/* Entity -> DTO Response */
public Response(Review review) {
this.id = review.getId();
this.body = review.getBody();
this.isCompleted = review.getIsCompleted();
this.note = new ReviewNoteDTO(review.getNote());
this.tag = new ReviewTagDTO(review.getTag());
}
/* Entity List -> DTO Response List */
public static List<Response> ResponseList (List<Review> reviewList) {
List<Response> responseList = reviewList.stream()
.map(o->new Response(o))
.collect(Collectors.toList());
return responseList;
}
@Getter
public static class ReviewNoteDTO {
private Long id;
public ReviewNoteDTO(Note note) {
this.id = note.getId();
}
}
@Getter
public static class ReviewTagDTO {
private Long id;
private String name;
public ReviewTagDTO(Tag tag) {
this.id = tag.getId();
this.name = tag.getName();
}
}
}
}
/* service 예시 */
public String createReview(ReviewDTO.Create createReview) {
Optional<Tutoring> tutoring = tutoringRepository.findById(createReview.getTutoringId());
Optional<Tag> tag = tagRepository.findById(createReview.getTagId());
// ...생략...
}
public List<ReviewDTO.Response> reviewList() {
List<Review> reviewList = reviewRepository.findAll();
return ReviewDTO.Response.ResponseList(reviewList);
}
이렇게 하면 목적마다 조금씩 다른 DTO들을 각각 만들어서 파일 1개에 때려넣을 수 있다!👍 이름도 깔쌈하게 붙어서 맘에 듦
DTO에 관한 생각
Spring Boot에서 깔끔하게 DTO 관리하기
인프런 질의응답 - dto (김영한님 답변)
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