refactor: #36 Page로 마지막 키 설정

src/main/java/com/leets/xcellentbe/domain/article/controller/ArticleController.java

@@ -5,6 +5,7 @@
 import java.util.List;
 import java.util.UUID;
 
+import org.springframework.data.domain.Page;
 import org.springframework.format.annotation.DateTimeFormat;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
@@ -88,11 +89,11 @@ public ResponseEntity<GlobalResponseDto<ArticleResponseDto>> getArticle(
 	//메인 페이지 게시글 조회
 	@GetMapping
 	@Operation(summary = "게시글 목록 조회(스크롤)", description = "페이징을 적용하여 게시글 목록을 조회합니다.")
-	public ResponseEntity<GlobalResponseDto<List<ArticleResponseDto>>> getArticles(
+	public ResponseEntity<GlobalResponseDto<Page<ArticleResponseDto>>> getArticles(
 		HttpServletRequest request,
 		@RequestParam(required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) LocalDateTime cursor,
 		@RequestParam(defaultValue = "10") int size) {
-		List<ArticleResponseDto> articles = articleService.getArticles(request, cursor, size);
+		Page<ArticleResponseDto> articles = articleService.getArticles(request, cursor, size);
 		return ResponseEntity.status(HttpStatus.OK).body(GlobalResponseDto.success(articles));
 	}
 

src/main/java/com/leets/xcellentbe/domain/article/domain/repository/ArticleRepository.java

@@ -4,6 +4,7 @@
 import java.util.List;
 import java.util.UUID;
 
+import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
@@ -17,11 +18,8 @@ public interface ArticleRepository extends JpaRepository<Article, UUID> {
 	@Query("SELECT new com.leets.xcellentbe.domain.article.dto.ArticlesWithMediaDto(p, pm.filePath) FROM Article p LEFT JOIN ArticleMedia pm ON p.articleId = pm.article.articleId WHERE p.writer = :user")
 	List<ArticlesWithMediaDto[]> findPostsByWriter(User user);
 
-	@Query("SELECT a FROM Article a WHERE a.deletedStatus = com.leets.xcellentbe.domain.shared.DeletedStatus.NOT_DELETED ORDER BY a.createdAt DESC")
-	List<Article> findRecentArticles(Pageable pageable);
-
-	@Query("SELECT a FROM Article a WHERE a.createdAt < :cursor AND a.deletedStatus = com.leets.xcellentbe.domain.shared.DeletedStatus.NOT_DELETED ORDER BY a.createdAt DESC")
-	List<Article> findRecentArticles(@Param("cursor") LocalDateTime cursor, Pageable pageable);
+	@Query("SELECT a FROM Article a WHERE (:cursor IS NULL OR a.createdAt < :cursor) AND a.deletedStatus = com.leets.xcellentbe.domain.shared.DeletedStatus.NOT_DELETED ORDER BY a.createdAt DESC")
+	Page<Article> findRecentArticles(@Param("cursor") LocalDateTime cursor, Pageable pageable);
 
 	@Query("SELECT COUNT(a) FROM Article a WHERE a.rePost = :article AND a.deletedStatus = com.leets.xcellentbe.domain.shared.DeletedStatus.NOT_DELETED")
 	long countReposts(@Param("article") Article article);

src/main/java/com/leets/xcellentbe/domain/article/service/ArticleService.java

@@ -8,6 +8,7 @@
 import java.util.UUID;
 import java.util.stream.Collectors;
 
+import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
@@ -175,24 +176,17 @@ public ArticleResponseDto getArticle(HttpServletRequest request, UUID articleId)
 	}
 
 	//게시글 전체 조회
-	public List<ArticleResponseDto> getArticles(HttpServletRequest request, LocalDateTime cursor, int size) {
-
+	public Page<ArticleResponseDto> getArticles(HttpServletRequest request, LocalDateTime cursor, int size) {
 		User user = getUser(request);
-
 		Pageable pageable = PageRequest.of(0, size);
 
-		List<Article> articles = (cursor == null) ?
-			articleRepository.findRecentArticles(pageable) : // 처음 로드 시
-			articleRepository.findRecentArticles(cursor, pageable);
-
-		return articles
-			.stream()
-			.map(article -> {
-				boolean isOwner = article.getWriter().getUserId().equals(user.getUserId());
-				ArticleStatsDto stats = findArticleStats(article);
-				return ArticleResponseDto.fromWithoutComments(article, isOwner, stats);
-			})
-			.collect(Collectors.toList());
+		Page<Article> articles = articleRepository.findRecentArticles(cursor, pageable);
+
+		return articles.map(article -> {
+			boolean isOwner = article.getWriter().getUserId().equals(user.getUserId());
+			ArticleStatsDto stats = findArticleStats(article);
+			return ArticleResponseDto.fromWithoutComments(article, isOwner, stats);
+		});
 	}
 
 	//리포스트 작성 (인용 x, 단순)