feat: 개발질문 게시판의 해시태그 기능 구현 완료

src/main/java/page/clab/api/domain/community/board/adapter/out/persistence/BoardHashtagPersistenceAdapter.java

@@ -38,7 +38,7 @@ public List<BoardHashtag> getAllIncludingDeletedByBoardId(Long boardId) {
                 .collect(Collectors.toList());
     }
 
-    public List<Long> getBoardIdsByHashTagId(List<Long> hashtagIds, Pageable pageable) {
-        return repository.getBoardIdsByHashTagId(hashtagIds, pageable);
+    public List<Long> getBoardIdsByHashTagId(List<Long> hashtagIds) {
+        return repository.getBoardIdsByHashTagId(hashtagIds, (long)hashtagIds.size());
     }
 }

src/main/java/page/clab/api/domain/community/board/adapter/out/persistence/BoardHashtagRepository.java

@@ -1,16 +1,29 @@
 package page.clab.api.domain.community.board.adapter.out.persistence;
 
 import java.util.List;
+import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;
 
 @Repository
-public interface BoardHashtagRepository extends JpaRepository<BoardHashtagJpaEntity, Long>, BoardHashtagRepositoryCustom, QuerydslPredicateExecutor<BoardHashtagJpaEntity> {
+public interface BoardHashtagRepository extends JpaRepository<BoardHashtagJpaEntity, Long>{
 
     List<BoardHashtagJpaEntity> findAllByBoardId(Long boardId);
 
-    @Query(value = "SELECT b.* FROM board_hashtag b WHERE b.board_id = :boardId", nativeQuery = true)
+    @Query(value = "SELECT b.* " +
+            "FROM board_hashtag b " +
+            "WHERE b.board_id = :boardId",
+           nativeQuery = true)
     List<BoardHashtagJpaEntity> findAllIncludingDeletedByBoardId(Long boardId);
+
+    @Query("SELECT DISTINCT b.boardId " +
+            "FROM BoardHashtagJpaEntity b " +
+            "WHERE b.hashtagId IN :hashtagIds " +
+            "AND b.isDeleted = false " +
+            "GROUP BY b.boardId " +
+            "HAVING COUNT(b.hashtagId) = :size")
+    List<Long> getBoardIdsByHashTagId(@Param("hashtagIds") List<Long> hashtagIds, @Param("size") Long size);
 }

src/main/java/page/clab/api/domain/community/board/application/port/out/RetrieveBoardHashtagPort.java

@@ -10,5 +10,5 @@ public interface RetrieveBoardHashtagPort {
 
     List<BoardHashtag> getAllIncludingDeletedByBoardId(Long boardId);
 
-    List<Long> getBoardIdsByHashTagId(List<Long> hashtagIds, Pageable pageable);
+    List<Long> getBoardIdsByHashTagId(List<Long> hashtagIds);
 }

src/main/java/page/clab/api/domain/community/board/application/service/BoardsByHashtagRetrievalService.java

@@ -39,7 +39,7 @@ public PagedResponseDto<BoardOverviewResponseDto> retrieveBoardsByHashtag(List<S
             hashtagIds.add(externalRetrieveHashtagUseCase.getByName(hashtag).getId());
         }
 
-        List<Long> boardIds = externalRetrieveBoardHashtagUseCase.getBoardIdsByHashTagId(hashtagIds, pageable);
+        List<Long> boardIds = externalRetrieveBoardHashtagUseCase.getBoardIdsByHashTagId(hashtagIds);
 
         List<Board> boards = boardIds.stream()
                 .map(externalRetrieveBoardUseCase::getById)

src/main/java/page/clab/api/external/community/board/application/port/ExternalRetrieveBoardHashtagUseCase.java

@@ -15,5 +15,5 @@ public interface ExternalRetrieveBoardHashtagUseCase {
 
     List<BoardHashtag> getAllIncludingDeletedByBoardId(Long boardId);
 
-    List<Long> getBoardIdsByHashTagId(List<Long> hashtagIds, Pageable pageable);
+    List<Long> getBoardIdsByHashTagId(List<Long> hashtagIds);
 }

src/main/java/page/clab/api/external/community/board/application/service/ExternalBoardHashtagRetrieveService.java

@@ -49,7 +49,7 @@ public List<BoardHashtag> getAllIncludingDeletedByBoardId(Long boardId) {
     }
 
     @Override
-    public List<Long> getBoardIdsByHashTagId(List<Long> hashtagIds, Pageable pageable) {
-        return retrieveBoardHashtagPort.getBoardIdsByHashTagId(hashtagIds, pageable);
+    public List<Long> getBoardIdsByHashTagId(List<Long> hashtagIds) {
+        return retrieveBoardHashtagPort.getBoardIdsByHashTagId(hashtagIds);
     }
 }