[8주차] cow mvc practice(BaekJaehyuk)

src/main/java/com/cow/cow_mvc_practice/comment/controller/CommentController.java

@@ -0,0 +1,22 @@
+package com.cow.cow_mvc_practice.comment.controller;
+
+import com.cow.cow_mvc_practice.comment.controller.request.CreateCommentRequest;
+import com.cow.cow_mvc_practice.comment.controller.response.CreateCommentResponse;
+import com.cow.cow_mvc_practice.comment.service.CommentService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/comments")
+@RequiredArgsConstructor
+public class CommentController {
+  private final CommentService commentService;
+
+  @PostMapping()
+  public CreateCommentResponse create(@RequestBody final CreateCommentRequest createCommentRequest) {
+    return commentService.createComment(createCommentRequest);
+  }
+}

src/main/java/com/cow/cow_mvc_practice/comment/controller/request/CreateCommentRequest.java

@@ -0,0 +1,18 @@
+package com.cow.cow_mvc_practice.comment.controller.request;
+
+import com.cow.cow_mvc_practice.comment.entity.Comment;
+import lombok.Getter;
+
+@Getter
+public class CreateCommentRequest {
+  Long memberId;
+  Long postId;
+  String content;
+
+  public Comment toEntity() {
+    return Comment.builder()
+        .content(content)
+        .build();
+  }
+
+}

src/main/java/com/cow/cow_mvc_practice/comment/controller/response/CreateCommentResponse.java

@@ -0,0 +1,26 @@
+package com.cow.cow_mvc_practice.comment.controller.response;
+
+import com.cow.cow_mvc_practice.comment.entity.Comment;
+import com.cow.cow_mvc_practice.member.controller.dto.response.CreateMemberResponse;
+import com.cow.cow_mvc_practice.member.entity.Member;
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+public class CreateCommentResponse {
+  private final Long id;
+  private final String content;
+
+  @Builder
+  public CreateCommentResponse(Long id, String content) {
+    this.id = id;
+    this.content = content;
+  }
+
+  public static CreateCommentResponse from(final Comment comment) {
+    return CreateCommentResponse.builder()
+        .id(comment.getId())
+        .content(comment.getContent())
+        .build();
+  }
+}

src/main/java/com/cow/cow_mvc_practice/comment/entity/Comment.java

@@ -0,0 +1,54 @@
+package com.cow.cow_mvc_practice.comment.entity;
+
+import com.cow.cow_mvc_practice.member.entity.Member;
+import com.cow.cow_mvc_practice.post.entity.Post;
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Comment {
+
+  @Id
+  @GeneratedValue(strategy = GenerationType.IDENTITY)
+  @Column(name = "comment_id")
+  private Long id;
+
+  private String content;
+
+  @ManyToOne(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
+  @JoinColumn(name = "post_id")
+  private Post post;
+
+  @ManyToOne(fetch = FetchType.LAZY)
+  @JoinColumn(name = "member_id")
+  private Member member;
+
+  @Builder
+  private Comment(final Long id, final String content, final Post post, final Member member) {
+    this.id = id;
+    this.content = content;
+    this.post = post;
+    this.member = member;
+  }
+
+  public static Comment of(final String content, final Post post, final Member member) {
+    return Comment.builder()
+        .content(content)
+        .post(post)
+        .member(member)
+        .build();
+    }
+  }

src/main/java/com/cow/cow_mvc_practice/comment/repository/CommentJPARepository.java

@@ -0,0 +1,8 @@
+package com.cow.cow_mvc_practice.comment.repository;
+
+import com.cow.cow_mvc_practice.comment.entity.Comment;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface CommentJPARepository extends JpaRepository<Comment, Long> {
+
+}

src/main/java/com/cow/cow_mvc_practice/comment/service/CommentService.java

@@ -0,0 +1,14 @@
+package com.cow.cow_mvc_practice.comment.service;
+
+import com.cow.cow_mvc_practice.comment.controller.request.CreateCommentRequest;
+import com.cow.cow_mvc_practice.comment.controller.response.CreateCommentResponse;
+import jakarta.transaction.Transactional;
+import org.springframework.stereotype.Service;
+
+@Transactional
+@Service
+public interface CommentService {
+
+  CreateCommentResponse createComment(CreateCommentRequest createCommentRequest);
+
+}

src/main/java/com/cow/cow_mvc_practice/comment/service/CommentServiceImpl.java

@@ -0,0 +1,44 @@
+package com.cow.cow_mvc_practice.comment.service;
+
+import com.cow.cow_mvc_practice.comment.controller.request.CreateCommentRequest;
+import com.cow.cow_mvc_practice.comment.controller.response.CreateCommentResponse;
+import com.cow.cow_mvc_practice.comment.entity.Comment;
+import com.cow.cow_mvc_practice.comment.repository.CommentJPARepository;
+import com.cow.cow_mvc_practice.member.entity.Member;
+import com.cow.cow_mvc_practice.member.repository.MemberJPARepository;
+import com.cow.cow_mvc_practice.post.entity.Post;
+import com.cow.cow_mvc_practice.post.repository.PostJPARepository;
+import jakarta.persistence.EntityNotFoundException;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@RequiredArgsConstructor
+@Service
+@Transactional
+public class CommentServiceImpl implements CommentService{
+  private final CommentJPARepository commentRepository;
+  private final MemberJPARepository memberRepository;
+  private final PostJPARepository postRepository;
+
+  @Override
+  public CreateCommentResponse createComment(CreateCommentRequest createCommentRequest) {
+    Member member = findMemberById(createCommentRequest.getMemberId());
+    Post post = findPostById(createCommentRequest.getPostId());
+
+    Comment comment = Comment.of(createCommentRequest.getContent(), post, member);
+    commentRepository.save(comment);
+    post.addComment(comment);
+    return CreateCommentResponse.from(comment);
+  }
+
+  private Post findPostById(Long postId) {
+    return postRepository.findById(postId)
+        .orElseThrow(() -> new EntityNotFoundException("[Error] 게시글를 찾을 수 없습니다."));
+  }
+
+  private Member findMemberById(Long memberId) {
+    return memberRepository.findById(memberId)
+        .orElseThrow(() -> new EntityNotFoundException("[Error] 회원를 찾을 수 없습니다."));
+  }
+}

src/main/java/com/cow/cow_mvc_practice/member/controller/MemberController.java

@@ -1,5 +1,7 @@
 package com.cow.cow_mvc_practice.member.controller;
 
+import com.cow.cow_mvc_practice.member.controller.dto.request.UpdateMemberRequest;
+import com.cow.cow_mvc_practice.member.controller.dto.response.CreateMemberResponse;
 import java.util.List;
 
 import org.springframework.web.bind.annotation.GetMapping;
@@ -10,9 +12,7 @@
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
-import com.cow.cow_mvc_practice.member.controller.dto.request.MemberRequest;
-import com.cow.cow_mvc_practice.member.controller.dto.response.MemberResponse;
-import com.cow.cow_mvc_practice.member.entity.Member;
+import com.cow.cow_mvc_practice.member.controller.dto.request.CreateMemberRequest;
 import com.cow.cow_mvc_practice.member.service.MemberService;
 
 import lombok.RequiredArgsConstructor;
@@ -24,39 +24,29 @@ public class MemberController {
 
 	private final MemberService memberService;
 
-	/* 기본 */
-	// @PostMapping("/new")
-	// public String create(@RequestBody final MemberRequest memberRequest) {
-	// 	memberService.join(memberRequest);
-	// 	return "회원저장 성공!";
-	// }
-	//
-	// @GetMapping("/{memberId}")
-	// public String findMember(@PathVariable final Long memberId) {
-	// 	Member member = memberService.findOne(memberId);
-	// 	return "member 아이디: " + member.getId() + ", member 이름: " + member.getName();
-	// }
-	//
-
-	/* MemberResponse dto 적용 */
 	@PostMapping("/new")
-	public MemberResponse create(@RequestBody final MemberRequest memberRequest) {
-		return memberService.join(memberRequest);
+	public CreateMemberResponse create(@RequestBody final CreateMemberRequest createMemberRequest) {
+		return memberService.join(createMemberRequest);
 	}
 
 	@GetMapping("/{memberId}")
-	public MemberResponse findMember(@PathVariable final Long memberId) {
+	public CreateMemberResponse findMember(@PathVariable final Long memberId) {
 		return memberService.findOne(memberId);
 	}
 
 	@GetMapping()
-	public MemberResponse findMemberQuery(@RequestParam final Long memberId) {
+	public CreateMemberResponse findMemberQuery(@RequestParam final Long memberId) {
 		return memberService.findOne(memberId);
 	}
 
-	@GetMapping("all")
-	public List<MemberResponse> findMembers() {
+	@GetMapping("/all")
+	public List<CreateMemberResponse> findMembers() {
 		return memberService.findAll();
 	}
+
+	@PostMapping("/{memberId}")
+	public CreateMemberResponse editMember(@PathVariable final Long memberId, final UpdateMemberRequest updateMemberRequest) {
+		return memberService.update(memberId, updateMemberRequest);
+	}
 }
 

src/main/java/com/cow/cow_mvc_practice/member/controller/dto/request/MemberRequest.java → src/main/java/com/cow/cow_mvc_practice/member/controller/dto/request/CreateMemberRequest.java

@@ -5,12 +5,12 @@
 import lombok.Getter;
 
 @Getter
-public class MemberRequest {
-	 String name;
+public class CreateMemberRequest {
+	String name;
 
-	 public Member toEntity() {
-		 return Member.builder()
-			 .name(name)
-			 .build();
-	 }
+	public Member toEntity() {
+		return Member.builder()
+				.name(name)
+				.build();
+	}
 }

src/main/java/com/cow/cow_mvc_practice/member/controller/dto/request/UpdateMemberRequest.java

@@ -1,9 +1,16 @@
 package com.cow.cow_mvc_practice.member.controller.dto.request;
 
+import com.cow.cow_mvc_practice.member.entity.Member;
 import lombok.Getter;
 
 @Getter
 public class UpdateMemberRequest {
 
 	private String name;
+
+	public Member toEntity() {
+		return Member.builder()
+				.name(name)
+				.build();
+	}
 }

src/main/java/com/cow/cow_mvc_practice/member/controller/dto/response/MemberResponse.java → src/main/java/com/cow/cow_mvc_practice/member/controller/dto/response/CreateMemberResponse.java

@@ -6,20 +6,22 @@
 import lombok.Getter;
 
 @Getter
-public class MemberResponse {
+public class CreateMemberResponse {
 	private final Long id;
 	private final String name;
 
 	@Builder
-	private MemberResponse(final Long id, final String name) {
+	private CreateMemberResponse(final Long id, final String name) {
 		this.id = id;
 		this.name = name;
 	}
 
-	public static MemberResponse from(final Member member) {
-		return MemberResponse.builder()
+	public static CreateMemberResponse from(final Member member) {
+		return CreateMemberResponse.builder()
 			.id(member.getId())
 			.name(member.getName())
 			.build();
 	}
+
+
 }

src/main/java/com/cow/cow_mvc_practice/member/entity/Member.java

@@ -1,6 +1,8 @@
 package com.cow.cow_mvc_practice.member.entity;
 
+import com.cow.cow_mvc_practice.comment.entity.Comment;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 
 import com.cow.cow_mvc_practice.post.entity.Post;
@@ -50,4 +52,12 @@ public static Member of(Long id, String name) {
 			.name(name)
 			.build();
 	}
+
+	public void updateName(String name) {
+		this.name = name;
+	}
+
+	@OneToMany(mappedBy = "member")
+	private Collection<Comment> comment;
+
 }

src/main/java/com/cow/cow_mvc_practice/member/repository/MemberRepositoryImpl.java

@@ -11,11 +11,8 @@
 
 @Repository
 public class MemberRepositoryImpl implements MemberRepository {
-	/**
-	 * 원래라면 HashMap이 아닌, concurrentHashMap이 적합함. HashMap은 멀티 쓰레드 환경에서 사용할 수 없기 때문.(동시성 이슈)
- 	 */
-	private static Map<Long, Member> store = new HashMap<>();
 
+	private static Map<Long, Member> store = new HashMap<>();
 
 	@Override
 	public void save(Member member) {

src/main/java/com/cow/cow_mvc_practice/member/service/MemberService.java

@@ -1,22 +1,21 @@
 package com.cow.cow_mvc_practice.member.service;
 
-import java.util.ArrayList;
+import com.cow.cow_mvc_practice.member.controller.dto.request.CreateMemberRequest;
+import com.cow.cow_mvc_practice.member.controller.dto.request.UpdateMemberRequest;
+import com.cow.cow_mvc_practice.member.controller.dto.response.CreateMemberResponse;
 import java.util.List;
 
-import com.cow.cow_mvc_practice.member.controller.dto.request.MemberRequest;
-import com.cow.cow_mvc_practice.member.controller.dto.response.MemberResponse;
-import com.cow.cow_mvc_practice.member.entity.Member;
-
 public interface MemberService {
 
 	/* 기본 */
-	// void join(MemberRequest memberRequest);
+	// void join(CreateMemberRequest memberRequest);
 	// Member findOne(Long memberId);
 
 
-	/* MemberResponse dto 적용 */
-	MemberResponse findOne(Long memberId);
-	MemberResponse join(MemberRequest memberRequest);
-	List<MemberResponse> findAll();
+	/* CreateMemberResponse dto 적용 */
+	CreateMemberResponse findOne(Long memberId);
+	CreateMemberResponse join(CreateMemberRequest memberRequest);
+	List<CreateMemberResponse> findAll();
+	CreateMemberResponse update(Long memberId, UpdateMemberRequest updateMemberRequest);
 }