refactor: 컬렉션 사이즈로 계산한 카운트를 명시적인 카운트 쿼리로 수정 (#51)

src/main/java/com/api/ttoklip/domain/honeytip/like/repository/HoneyTipLikeRepository.java

@@ -4,7 +4,7 @@
 import java.util.Optional;
 import org.springframework.data.jpa.repository.JpaRepository;
 
-public interface HoneyTipLikeRepository extends JpaRepository<HoneyTipLike, Long> {
+public interface HoneyTipLikeRepository extends JpaRepository<HoneyTipLike, Long>, HoneyTipLikeRepositoryCustom{
     Optional<HoneyTipLike> findByHoneyTipIdAndMemberId(Long honeyTipId, Long memberId);
     boolean existsByHoneyTipIdAndMemberId(Long honeyTipId, Long memberId);
 }

src/main/java/com/api/ttoklip/domain/honeytip/like/repository/HoneyTipLikeRepositoryCustom.java

@@ -0,0 +1,5 @@
+package com.api.ttoklip.domain.honeytip.like.repository;
+
+public interface HoneyTipLikeRepositoryCustom {
+    Long countHoneyTipLikesByHoneyTipId(final Long honeyTipId);
+}

src/main/java/com/api/ttoklip/domain/honeytip/like/repository/HoneyTipLikeRepositoryImpl.java

@@ -0,0 +1,23 @@
+package com.api.ttoklip.domain.honeytip.like.repository;
+
+import static com.api.ttoklip.domain.honeytip.like.domain.QHoneyTipLike.honeyTipLike;
+
+import com.querydsl.core.types.dsl.Wildcard;
+import com.querydsl.jpa.impl.JPAQueryFactory;
+import lombok.RequiredArgsConstructor;
+
+@RequiredArgsConstructor
+public class HoneyTipLikeRepositoryImpl implements HoneyTipLikeRepositoryCustom {
+
+    private final JPAQueryFactory jpaQueryFactory;
+
+    @Override
+    public Long countHoneyTipLikesByHoneyTipId(final Long honeyTipId) {
+        return jpaQueryFactory
+                .select(Wildcard.count)
+                .from(honeyTipLike)
+                .where(honeyTipLike.honeyTip.id.eq(honeyTipId))
+                .fetchOne();
+    }
+
+}

src/main/java/com/api/ttoklip/domain/honeytip/like/service/HoneyTipLikeService.java

@@ -48,4 +48,8 @@ public void cancel(final Long honeyTipId) {
         honeyTipLikeRepository.deleteById(honeyTipLike.getId());
     }
 
+    public Long countHoneyTipLikes(final Long honeyTipId) {
+        return honeyTipLikeRepository.countHoneyTipLikesByHoneyTipId(honeyTipId);
+    }
+
 }

src/main/java/com/api/ttoklip/domain/honeytip/post/service/HoneyTipPostService.java

@@ -33,6 +33,7 @@ public class HoneyTipPostService {
     private final HoneyTipRepository honeytipRepository;
     private final HoneyTipDefaultRepository honeyTipDefaultRepository;
     private final ReportService reportService;
+
     private final HoneyTipUrlService honeyTipUrlService;
     private final HoneyTipImageService honeyTipImageService;
     private final HoneyTipLikeService honeyTipLikeService;
@@ -158,7 +159,7 @@ public HoneyTipSingleResponse getSinglePost(final Long postId) {
 
         HoneyTip honeyTipWithImgAndUrl = honeytipRepository.findByIdFetchJoin(postId);
         List<HoneyTipComment> activeComments = honeytipRepository.findActiveCommentsByHoneyTipId(postId);
-        int likeCount = honeyTipWithImgAndUrl.getHoneyTipLikes().size();
+        int likeCount = honeyTipLikeService.countHoneyTipLikes(postId).intValue();
         HoneyTipSingleResponse honeyTipSingleResponse = HoneyTipSingleResponse.of(honeyTipWithImgAndUrl,
                 activeComments, likeCount);
         return honeyTipSingleResponse;