refactor: 메서드명 오타 수정과 형식 통일

src/main/java/com/mallang/auth/domain/MemberRepository.java

@@ -1,10 +1,18 @@
 package com.mallang.auth.domain;
 
 import com.mallang.auth.exception.NotFoundMemberException;
+import jakarta.annotation.Nullable;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface MemberRepository extends JpaRepository<Member, Long> {
 
+    default Member getByIdIfIdNotNull(@Nullable Long id) {
+        if (id == null) {
+            return null;
+        }
+        return getById(id);
+    }
+
     default Member getById(Long id) {
         return findById(id).orElseThrow(NotFoundMemberException::new);
     }

src/main/java/com/mallang/category/application/CategoryService.java

@@ -41,9 +41,9 @@ public void updateHierarchy(UpdateCategoryHierarchyCommand command) {
     }
 
     private void updateHierarchy(Category target, Long parentId, Long prevId, Long nextId) {
-        Category parent = categoryRepository.getByNullableId(parentId);
-        Category prev = categoryRepository.getByNullableId(prevId);
-        Category next = categoryRepository.getByNullableId(nextId);
+        Category parent = categoryRepository.getByIdIfIdNotNull(parentId);
+        Category prev = categoryRepository.getByIdIfIdNotNull(prevId);
+        Category next = categoryRepository.getByIdIfIdNotNull(nextId);
         target.updateHierarchy(parent, prev, next, categoryValidator);
     }
 

src/main/java/com/mallang/category/domain/Category.java

@@ -169,10 +169,10 @@ public List<Category> getSortedChildren() {
         return categories;
     }
 
-    // For lazy loading issue
-    // parent, prev, next 가 지연로딩되어 프록시로 조회되므로, 그냥 사용 시 update 가 동작하지 않음
-    // 이를 해결하기 위해 메서드를 통해 접근해야 하는데, private 혹은 package-private 인 경우 여전히 동작하지 않음
-    // 따라서 protected 로 설정한
+    // lazy loading issue 해결을 위한 메서드
+    // 카테고리 조회 시 parent, prev, next 가 지연로딩되어 프록시로 조회되므로, prev.next = this 등으로 사용 시 update 가 동작하지 않음
+    // 이를 해결하기 위해 메서드를 통해 접근해야 하는데 private 혹은 package-private 메서드의 경우 여전히 동작하지 않음
+    // 따라서 protected 로 설정함
     protected void setPreviousSibling(Category previousSibling) {
         this.previousSibling = previousSibling;
     }

src/main/java/com/mallang/category/domain/CategoryRepository.java

@@ -20,8 +20,7 @@ default Category getById(Long id) {
     @Query("SELECT c FROM Category c WHERE c.blog = :blog AND c.parent IS NULL")
     List<Category> findAllRootByBlog(@Param("blog") Blog blog);
 
-    @Nullable
-    default Category getByNullableId(@Nullable Long categoryId) {
+    default Category getByIdIfIdNotNull(@Nullable Long categoryId) {
         if (categoryId == null) {
             return null;
         }

src/main/java/com/mallang/category/domain/CategoryValidator.java

@@ -48,7 +48,7 @@ public void validateUpdateHierarchy(
     ) {
         validateOwners(target, parent, prevSibling, nextSibling);
         validateSelfReference(target, parent, prevSibling, nextSibling);
-        validateDependentReference(target, parent, prevSibling, nextSibling);
+        validateDescendantReference(target, parent, prevSibling, nextSibling);
         validateContinuous(prevSibling, nextSibling);
         validateParentAndChildRelation(target, parent, prevSibling, nextSibling);
         validateDuplicatedNameWhenParticipated(target, prevSibling, nextSibling);
@@ -68,7 +68,7 @@ private void validateSelfReference(Category target, Category parent, Category pr
         }
     }
 
-    private void validateDependentReference(
+    private void validateDescendantReference(
             Category target,
             Category parent,
             Category prevSibling,

src/main/java/com/mallang/comment/application/UnAuthCommentService.java

@@ -41,8 +41,7 @@ public void update(UpdateUnAuthCommentCommand command) {
 
     public void delete(DeleteUnAuthCommentCommand command) {
         UnAuthComment comment = commentRepository.getUnAuthCommentById(command.commentId());
-        Member member = (command.memberId() == null) ? null
-                : memberRepository.getById(command.memberId());
+        Member member = memberRepository.getByIdIfIdNotNull(command.memberId());
         comment.validateDelete(member, command.password(), command.postPassword());
         comment.delete(commentDeleteService);
     }

src/main/java/com/mallang/post/application/DraftService.java

@@ -11,7 +11,6 @@
 import com.mallang.post.application.command.UpdateDraftCommand;
 import com.mallang.post.domain.draft.Draft;
 import com.mallang.post.domain.draft.DraftRepository;
-import jakarta.annotation.Nullable;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -29,15 +28,15 @@ public class DraftService {
     public Long create(CreateDraftCommand command) {
         Member member = memberRepository.getById(command.memberId());
         Blog blog = blogRepository.getByName(command.blogName());
-        Category category = getCategoryByIdIfPresent(command.categoryId());
+        Category category = categoryRepository.getByIdIfIdNotNull(command.categoryId());
         Draft draft = command.toDraft(member, blog, category);
         return draftRepository.save(draft).getId();
     }
 
     public void update(UpdateDraftCommand command) {
         Member member = memberRepository.getById(command.memberId());
         Draft draft = draftRepository.getById(command.draftId());
-        Category category = getCategoryByIdIfPresent(command.categoryId());
+        Category category = categoryRepository.getByIdIfIdNotNull(command.categoryId());
         draft.validateWriter(member);
         draft.update(
                 command.title(),
@@ -54,11 +53,4 @@ public void delete(DeleteDraftCommand command) {
         draft.validateWriter(member);
         draftRepository.delete(draft);
     }
-
-    private Category getCategoryByIdIfPresent(@Nullable Long id) {
-        if (id == null) {
-            return null;
-        }
-        return categoryRepository.getById(id);
-    }
 }

src/main/java/com/mallang/post/application/PostService.java

@@ -15,7 +15,6 @@
 import com.mallang.post.domain.PostRepository;
 import com.mallang.post.domain.draft.Draft;
 import com.mallang.post.domain.draft.DraftRepository;
-import jakarta.annotation.Nullable;
 import java.util.List;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -45,7 +44,7 @@ public PostId createFromDraft(CreatePostCommand command, Long draftId) {
     public PostId create(CreatePostCommand command) {
         Member member = memberRepository.getById(command.memberId());
         Blog blog = blogRepository.getByName(command.blogName());
-        Category category = getCategoryByIdIfPresent(command.categoryId());
+        Category category = categoryRepository.getByIdIfIdNotNull(command.categoryId());
         PostId postId = postIdGenerator.generate(blog.getId());
         Post post = command.toPost(member, postId, blog, category);
         return postRepository.save(post).getId();
@@ -54,7 +53,7 @@ public PostId create(CreatePostCommand command) {
     public void update(UpdatePostCommand command) {
         Member member = memberRepository.getById(command.memberId());
         Post post = postRepository.getById(command.postId(), command.blogName());
-        Category category = getCategoryByIdIfPresent(command.categoryId());
+        Category category = categoryRepository.getByIdIfIdNotNull(command.categoryId());
         post.validateWriter(member);
         post.update(
                 command.visibility(),
@@ -76,11 +75,4 @@ public void delete(DeletePostCommand command) {
             postRepository.delete(post);
         }
     }
-
-    private Category getCategoryByIdIfPresent(@Nullable Long id) {
-        if (id == null) {
-            return null;
-        }
-        return categoryRepository.getById(id);
-    }
 }

src/main/java/com/mallang/post/domain/Post.java

@@ -12,7 +12,6 @@
 import com.mallang.post.exception.PostLikeCountNegativeException;
 import jakarta.annotation.Nullable;
 import jakarta.persistence.AssociationOverride;
-import jakarta.persistence.AssociationOverrides;
 import jakarta.persistence.Embedded;
 import jakarta.persistence.EmbeddedId;
 import jakarta.persistence.Entity;
@@ -43,9 +42,7 @@ public class Post extends CommonRootEntity<PostId> {
     private PostVisibilityPolicy visibilityPolish;
 
     @Embedded
-    @AssociationOverrides(
-            @AssociationOverride(name = "tags", joinTable = @JoinTable(name = "post_tags"))
-    )
+    @AssociationOverride(name = "tags", joinTable = @JoinTable(name = "post_tags"))
     private PostContent content;
 
     private int likeCount = 0;
@@ -114,8 +111,10 @@ public void validateWriter(Member member) {
         }
     }
 
-    public void validateAccess(@Nullable Member member,
-                               @Nullable String postPassword) {
+    public void validateAccess(
+            @Nullable Member member,
+            @Nullable String postPassword
+    ) {
         if (isWriter(member)) {
             return;
         }