Maintenance: MemeRepositoryCustomImpl - Eliminate layer violation (#118)

Co-authored-by: claude[bot] <41898282+claude[bot]@users.noreply.github.com>
Co-authored-by: Claude Sonnet 4.5 <[email protected]>

Author: 3 people

src/main/java/spring/memewikibe/application/MemeAggregationLookUpServiceImpl.java

@@ -72,7 +72,10 @@ public List<MemeSimpleResponse> getMostPopularMemes() {
     private List<MemeSimpleResponse> fillWithLatestMemes(List<MemeSimpleResponse> originalList, int originalListSize, int targetCount) {
         int remainingCount = targetCount - originalListSize;
         List<Long> existingIds = originalList.stream().map(MemeSimpleResponse::id).toList();
-        List<MemeSimpleResponse> latestMemes = memeRepository.findLatestMemesExcludingIds(existingIds, remainingCount);
+        List<MemeSimpleResponse> latestMemes = memeRepository.findLatestMemesExcludingIds(existingIds, remainingCount)
+            .stream()
+            .map(info -> new MemeSimpleResponse(info.id(), info.title(), info.imgUrl()))
+            .toList();
 
         List<MemeSimpleResponse> result = new ArrayList<>(originalList);
         result.addAll(latestMemes);

src/main/java/spring/memewikibe/domain/meme/MemeSimpleInfo.java

@@ -0,0 +1,12 @@
+package spring.memewikibe.domain.meme;
+
+/**
+ * Domain projection for simple meme information.
+ * Contains only the essential fields needed for list views and recommendations.
+ */
+public record MemeSimpleInfo(
+    long id,
+    String title,
+    String imgUrl
+) {
+}

src/main/java/spring/memewikibe/infrastructure/MemeRepositoryCustom.java

@@ -3,8 +3,8 @@
 import org.springframework.data.domain.Limit;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.domain.Slice;
-import spring.memewikibe.api.controller.meme.response.MemeSimpleResponse;
 import spring.memewikibe.domain.meme.Meme;
+import spring.memewikibe.domain.meme.MemeSimpleInfo;
 
 import java.util.List;
 
@@ -17,5 +17,5 @@ public interface MemeRepositoryCustom {
 
     List<Meme> findKeywordCandidatesAcrossFields(List<String> keywords, Limit limit);
 
-    List<MemeSimpleResponse> findLatestMemesExcludingIds(List<Long> excludeIds, int limit);
+    List<MemeSimpleInfo> findLatestMemesExcludingIds(List<Long> excludeIds, int limit);
 }

src/main/java/spring/memewikibe/infrastructure/MemeRepositoryCustomImpl.java

@@ -8,8 +8,8 @@
 import org.springframework.data.domain.Slice;
 import org.springframework.data.domain.SliceImpl;
 import org.springframework.stereotype.Repository;
-import spring.memewikibe.api.controller.meme.response.MemeSimpleResponse;
 import spring.memewikibe.domain.meme.Meme;
+import spring.memewikibe.domain.meme.MemeSimpleInfo;
 
 import java.util.List;
 
@@ -64,9 +64,9 @@ public Slice<Meme> findByTitleOrHashtagsContainingAsSlice(String title, Long las
     }
 
     @Override
-    public List<MemeSimpleResponse> findLatestMemesExcludingIds(List<Long> excludeIds, int limit) {
+    public List<MemeSimpleInfo> findLatestMemesExcludingIds(List<Long> excludeIds, int limit) {
         return queryFactory
-            .select(Projections.constructor(MemeSimpleResponse.class,
+            .select(Projections.constructor(MemeSimpleInfo.class,
                 meme.id,
                 meme.title,
                 meme.imgUrl