[WTH-251] post comment 작성자 타입을 club member로 변경

src/main/kotlin/com/weeth/domain/board/application/mapper/PostMapper.kt

@@ -26,15 +26,14 @@ class PostMapper(
 
     fun toDetailResponse(
         post: Post,
-        authorMember: ClubMember,
         comments: List<CommentResponse>,
         files: List<FileResponse>,
         isLiked: Boolean,
     ) = PostDetailResponse(
         id = post.id,
         boardId = post.board.id,
         boardName = post.board.name,
-        author = UserInfo.of(post.user, authorMember.memberRole, resolveProfileImage(authorMember)),
+        author = UserInfo.of(post.clubMember.user, post.clubMember.memberRole, resolveProfileImage(post.clubMember)),
         title = post.title,
         content = post.content,
         time = post.modifiedAt,
@@ -46,13 +45,12 @@ class PostMapper(
 
     fun toListResponse(
         post: Post,
-        authorMember: ClubMember,
         hasFile: Boolean,
         now: LocalDateTime,
         isLiked: Boolean,
     ) = PostListResponse(
         id = post.id,
-        author = UserInfo.of(post.user, authorMember.memberRole, resolveProfileImage(authorMember)),
+        author = UserInfo.of(post.clubMember.user, post.clubMember.memberRole, resolveProfileImage(post.clubMember)),
         boardId = post.board.id,
         boardName = post.board.name,
         title = post.title,

src/main/kotlin/com/weeth/domain/board/application/usecase/command/ManagePostUseCase.kt

@@ -20,15 +20,13 @@ import com.weeth.domain.file.application.mapper.FileMapper
 import com.weeth.domain.file.domain.enums.FileOwnerType
 import com.weeth.domain.file.domain.repository.FileReader
 import com.weeth.domain.file.domain.repository.FileRepository
-import com.weeth.domain.user.domain.repository.UserReader
 import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional
 
 @Service
 class ManagePostUseCase(
     private val postRepository: PostRepository,
     private val boardRepository: BoardRepository,
-    private val userReader: UserReader,
     private val clubMemberPolicy: ClubMemberPolicy,
     private val clubMemberCardinalReader: ClubMemberCardinalReader,
     private val fileRepository: FileRepository,
@@ -44,7 +42,6 @@ class ManagePostUseCase(
         userId: Long,
     ): PostSaveResponse {
         val member = clubMemberPolicy.getActiveMember(clubId, userId)
-        val user = userReader.getById(userId)
         val board = findBoardInClub(boardId, clubId)
         validateWritePermission(board, member)
 
@@ -57,7 +54,7 @@ class ManagePostUseCase(
             Post.create(
                 title = request.title,
                 content = request.content,
-                user = user,
+                clubMember = member,
                 board = board,
                 cardinalNumber = currentCardinalNumber,
             )
@@ -75,7 +72,6 @@ class ManagePostUseCase(
         userId: Long,
     ): PostSaveResponse {
         val member = clubMemberPolicy.getActiveMember(clubId, userId)
-        val user = userReader.getById(userId)
         val post = findPost(postId)
         if (post.board.club.id != clubId) throw PostNotFoundException()
         validateOwner(post, userId)
@@ -97,7 +93,6 @@ class ManagePostUseCase(
         userId: Long,
     ) {
         val member = clubMemberPolicy.getActiveMember(clubId, userId)
-        val user = userReader.getById(userId)
         val post = findPost(postId)
         if (post.board.club.id != clubId) throw PostNotFoundException()
         validateOwner(post, userId)

src/main/kotlin/com/weeth/domain/board/application/usecase/query/GetPostQueryService.kt

@@ -10,9 +10,7 @@ import com.weeth.domain.board.application.mapper.PostMapper
 import com.weeth.domain.board.domain.repository.BoardRepository
 import com.weeth.domain.board.domain.repository.PostLikeRepository
 import com.weeth.domain.board.domain.repository.PostRepository
-import com.weeth.domain.club.domain.entity.ClubMember
 import com.weeth.domain.club.domain.enums.MemberRole
-import com.weeth.domain.club.domain.repository.ClubMemberReader
 import com.weeth.domain.club.domain.service.ClubMemberPolicy
 import com.weeth.domain.comment.application.usecase.query.GetCommentQueryService
 import com.weeth.domain.comment.domain.repository.CommentReader
@@ -34,7 +32,6 @@ class GetPostQueryService(
     private val boardRepository: BoardRepository,
     private val postLikeRepository: PostLikeRepository,
     private val clubMemberPolicy: ClubMemberPolicy,
-    private val clubMemberReader: ClubMemberReader,
     private val commentReader: CommentReader,
     private val getCommentQueryService: GetCommentQueryService,
     private val fileReader: FileReader,
@@ -60,14 +57,10 @@ class GetPostQueryService(
         val files = fileReader.findAll(FileOwnerType.POST, post.id).map(fileMapper::toFileResponse)
         val comments = commentReader.findAllByPostId(post.id)
 
-        val commentAuthorIds = comments.map { it.user.id }.distinct()
-        val allAuthorIds = (commentAuthorIds + post.user.id).distinct()
-        val memberMap = buildMemberMap(clubId, allAuthorIds)
-
-        val commentTree = getCommentQueryService.toCommentTreeResponses(comments, memberMap)
+        val commentTree = getCommentQueryService.toCommentTreeResponses(comments)
         val isLiked = postLikeRepository.existsByPostAndUserIdAndIsActiveTrue(post, userId)
 
-        return postMapper.toDetailResponse(post, memberMap.getValue(post.user.id), commentTree, files, isLiked)
+        return postMapper.toDetailResponse(post, commentTree, files, isLiked)
     }
 
     fun findAllPosts(
@@ -93,15 +86,13 @@ class GetPostQueryService(
 
         val posts = postRepository.findAllActiveByBoardIds(accessibleBoardIds, pageable)
         val postIds = posts.content.map { it.id }
-        val memberMap = buildMemberMap(clubId, posts.content.map { it.user.id }.distinct())
         val fileExistsByPostId = buildFileExistsMap(postIds)
         val likedPostIds = postLikeRepository.findLikedPostIds(postIds, userId)
         val now = LocalDateTime.now()
 
         return posts.map { post ->
             postMapper.toListResponse(
                 post,
-                memberMap.getValue(post.user.id),
                 fileExistsByPostId[post.id] == true,
                 now,
                 post.id in likedPostIds,
@@ -125,14 +116,12 @@ class GetPostQueryService(
 
         val postIds = posts.content.map { it.id }
         val fileExistsByPostId = buildFileExistsMap(postIds)
-        val memberMap = buildMemberMap(clubId, posts.content.map { it.user.id }.distinct())
         val likedPostIds = postLikeRepository.findLikedPostIds(postIds, userId)
         val now = LocalDateTime.now()
 
         return posts.map { post ->
             postMapper.toListResponse(
                 post,
-                memberMap.getValue(post.user.id),
                 fileExistsByPostId[post.id] == true,
                 now,
                 post.id in likedPostIds,
@@ -160,32 +149,19 @@ class GetPostQueryService(
 
         val postIds = posts.content.map { it.id }
         val fileExistsByPostId = buildFileExistsMap(postIds)
-        val memberMap = buildMemberMap(clubId, posts.content.map { it.user.id }.distinct())
         val likedPostIds = postLikeRepository.findLikedPostIds(postIds, userId)
         val now = LocalDateTime.now()
 
         return posts.map { post ->
             postMapper.toListResponse(
                 post,
-                memberMap.getValue(post.user.id),
                 fileExistsByPostId[post.id] == true,
                 now,
                 post.id in likedPostIds,
             )
         }
     }
 
-    /**
-     * Post, Comment 조회 시 작성자 정보를 매핑하기 위한 헬퍼 메서드
-     */
-    private fun buildMemberMap(
-        clubId: Long,
-        userIds: List<Long>,
-    ): Map<Long, ClubMember> {
-        if (userIds.isEmpty()) return emptyMap()
-        return clubMemberReader.findAllByClubIdAndUserIds(clubId, userIds).associateBy { it.user.id }
-    }
-
     private fun validatePage(
         pageNumber: Int,
         pageSize: Int,

src/main/kotlin/com/weeth/domain/board/domain/entity/Post.kt

@@ -1,6 +1,6 @@
 package com.weeth.domain.board.domain.entity
 
-import com.weeth.domain.user.domain.entity.User
+import com.weeth.domain.club.domain.entity.ClubMember
 import com.weeth.global.common.entity.BaseEntity
 import jakarta.persistence.Column
 import jakarta.persistence.Entity
@@ -17,7 +17,7 @@ import jakarta.persistence.Table
 class Post(
     title: String,
     content: String,
-    user: User,
+    clubMember: ClubMember,
     board: Board,
     cardinalNumber: Int? = null,
 ) : BaseEntity() {
@@ -35,8 +35,8 @@ class Post(
         private set
 
     @ManyToOne(fetch = FetchType.LAZY, optional = false)
-    @JoinColumn(name = "user_id", nullable = false)
-    var user: User = user
+    @JoinColumn(name = "club_member_id", nullable = false)
+    var clubMember: ClubMember = clubMember
         private set
 
     @ManyToOne(fetch = FetchType.LAZY, optional = false)
@@ -78,7 +78,7 @@ class Post(
         likeCount--
     }
 
-    fun isOwnedBy(userId: Long): Boolean = user.id == userId
+    fun isOwnedBy(userId: Long): Boolean = clubMember.user.id == userId
 
     fun belongsToClub(clubId: Long): Boolean = board.club.id == clubId && !board.isDeleted
 
@@ -108,7 +108,7 @@ class Post(
         fun create(
             title: String,
             content: String,
-            user: User,
+            clubMember: ClubMember,
             board: Board,
             cardinalNumber: Int? = null,
         ): Post {
@@ -117,7 +117,7 @@ class Post(
             return Post(
                 title = title,
                 content = content,
-                user = user,
+                clubMember = clubMember,
                 board = board,
                 cardinalNumber = cardinalNumber,
             )

src/main/kotlin/com/weeth/domain/board/domain/repository/PostRepository.kt

@@ -19,7 +19,7 @@ import java.time.LocalDateTime
 interface PostRepository :
     JpaRepository<Post, Long>,
     PostReader {
-    @EntityGraph(attributePaths = ["user", "board"])
+    @EntityGraph(attributePaths = ["clubMember", "clubMember.user", "board"])
     @Query(
         """
         SELECT p
@@ -35,7 +35,7 @@ interface PostRepository :
         pageable: Pageable,
     ): Slice<Post>
 
-    @EntityGraph(attributePaths = ["user", "board"])
+    @EntityGraph(attributePaths = ["clubMember", "clubMember.user", "board"])
     @Query(
         """
         SELECT p
@@ -52,6 +52,7 @@ interface PostRepository :
 
     fun findByIdAndIsDeletedFalse(id: Long): Post?
 
+    @EntityGraph(attributePaths = ["clubMember", "clubMember.user", "board"])
     @Query(
         """
         SELECT p
@@ -65,6 +66,7 @@ interface PostRepository :
         @Param("id") id: Long,
     ): Post?
 
+    @EntityGraph(attributePaths = ["board", "board.club"])
     @Lock(LockModeType.PESSIMISTIC_WRITE)
     @QueryHints(QueryHint(name = "jakarta.persistence.lock.timeout", value = "2000"))
     @Query(
@@ -80,7 +82,7 @@ interface PostRepository :
         @Param("id") id: Long,
     ): Post?
 
-    @EntityGraph(attributePaths = ["user", "board"])
+    @EntityGraph(attributePaths = ["clubMember", "clubMember.user", "board"])
     @Query(
         """
         SELECT p
@@ -106,7 +108,7 @@ interface PostRepository :
         pageable: Pageable,
     ): Slice<Post> = findAllActiveByBoardIds(boardIds, pageable)
 
-    @EntityGraph(attributePaths = ["user"])
+    @EntityGraph(attributePaths = ["clubMember", "clubMember.user"])
     @Query(
         """
         SELECT p
@@ -122,7 +124,7 @@ interface PostRepository :
         pageable: Pageable,
     ): Slice<Post>
 
-    @EntityGraph(attributePaths = ["user"])
+    @EntityGraph(attributePaths = ["clubMember", "clubMember.user"])
     @Query(
         """
         SELECT p
@@ -138,7 +140,7 @@ interface PostRepository :
         pageable: Pageable,
     ): Slice<Post>
 
-    @EntityGraph(attributePaths = ["user"])
+    @EntityGraph(attributePaths = ["clubMember", "clubMember.user"])
     @Query(
         """
         SELECT p
@@ -156,7 +158,7 @@ interface PostRepository :
         pageable: Pageable,
     ): Slice<Post>
 
-    @EntityGraph(attributePaths = ["user"])
+    @EntityGraph(attributePaths = ["clubMember", "clubMember.user"])
     @Query(
         """
         SELECT p

src/main/kotlin/com/weeth/domain/comment/application/mapper/CommentMapper.kt

@@ -1,6 +1,5 @@
 package com.weeth.domain.comment.application.mapper
 
-import com.weeth.domain.club.domain.entity.ClubMember
 import com.weeth.domain.comment.application.dto.response.CommentResponse
 import com.weeth.domain.comment.domain.entity.Comment
 import com.weeth.domain.file.application.dto.response.FileResponse
@@ -14,17 +13,16 @@ class CommentMapper(
 ) {
     fun toCommentDto(
         comment: Comment,
-        authorMember: ClubMember,
         children: List<CommentResponse>,
         fileUrls: List<FileResponse>,
     ): CommentResponse =
         CommentResponse(
             id = comment.id,
             author =
                 UserInfo.of(
-                    comment.user,
-                    authorMember.memberRole,
-                    authorMember.profileImageStorageKey?.let { fileAccessUrlPort.resolve(it) },
+                    comment.clubMember.user,
+                    comment.clubMember.memberRole,
+                    comment.clubMember.profileImageStorageKey?.let { fileAccessUrlPort.resolve(it) },
                 ),
             content = comment.content,
             time = comment.modifiedAt,

src/main/kotlin/com/weeth/domain/comment/application/usecase/command/ManageCommentUseCase.kt

@@ -3,6 +3,7 @@ package com.weeth.domain.comment.application.usecase.command
 import com.weeth.domain.board.application.exception.PostNotFoundException
 import com.weeth.domain.board.domain.entity.Post
 import com.weeth.domain.board.domain.repository.PostRepository
+import com.weeth.domain.club.domain.service.ClubMemberPolicy
 import com.weeth.domain.comment.application.dto.request.CommentSaveRequest
 import com.weeth.domain.comment.application.dto.request.CommentUpdateRequest
 import com.weeth.domain.comment.application.exception.CommentAlreadyDeletedException
@@ -15,15 +16,14 @@ import com.weeth.domain.file.application.mapper.FileMapper
 import com.weeth.domain.file.domain.enums.FileOwnerType
 import com.weeth.domain.file.domain.repository.FileReader
 import com.weeth.domain.file.domain.repository.FileRepository
-import com.weeth.domain.user.domain.repository.UserReader
 import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional
 
 @Service
 class ManageCommentUseCase(
     private val commentRepository: CommentRepository,
     private val postRepository: PostRepository, // 타 도메인 이므로 Reader 사용 검토
-    private val userReader: UserReader,
+    private val clubMemberPolicy: ClubMemberPolicy,
     private val fileReader: FileReader,
     private val fileRepository: FileRepository,
     private val fileMapper: FileMapper,
@@ -34,8 +34,9 @@ class ManageCommentUseCase(
         postId: Long,
         userId: Long,
     ) {
-        val user = userReader.getById(userId)
         val post = findPostWithLock(postId)
+        val clubId = post.board.club.id
+        val clubMember = clubMemberPolicy.getActiveMember(clubId, userId)
         val parent =
             dto.parentCommentId?.let { parentId ->
                 commentRepository.findByIdAndPostId(parentId, postId) ?: throw CommentNotFoundException()
@@ -45,7 +46,7 @@ class ManageCommentUseCase(
             Comment.createForPost(
                 content = dto.content,
                 post = post,
-                user = user,
+                clubMember = clubMember,
                 parent = parent,
             )
         val savedComment = commentRepository.save(comment)