feat: Modify CommentsRepository (#11)

src/main/java/com/beotkkot/qtudy/repository/comments/CommentsRepository.java

@@ -1,11 +1,18 @@
 package com.beotkkot.qtudy.repository.comments;
 
 import com.beotkkot.qtudy.domain.comments.Comments;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.transaction.annotation.Transactional;
 
 public interface CommentsRepository extends JpaRepository<Comments, Long> {
- // int countByPostId(Long postid);
 
-// @Transactional
-// void deleteByPostId(Long postId);
+
+ Page<Comments> findAllByPostId(Long postId, Pageable pageable);
+
+ int countByPostId(Long postid);
+
+ @Transactional
+ void deleteByPostId(Long postId);
 }