[FEAT] ProfileCard 동적 쿼리 조회 메서드 구현, 커서 기반 페이지네이션 적용

src/main/java/io/oeid/mogakgo/domain/profile/infrastructure/ProfileCardJpaRepository.java

@@ -0,0 +1,10 @@
+package io.oeid.mogakgo.domain.profile.infrastructure;
+
+import io.oeid.mogakgo.domain.profile.domain.entity.ProfileCard;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface ProfileCardJpaRepository extends JpaRepository<ProfileCard, Long>, ProfileCardRepositoryCustom {
+
+}

src/main/java/io/oeid/mogakgo/domain/profile/infrastructure/ProfileCardRepositoryCustom.java

@@ -0,0 +1,13 @@
+package io.oeid.mogakgo.domain.profile.infrastructure;
+
+import io.oeid.mogakgo.domain.geo.domain.enums.Region;
+import io.oeid.mogakgo.domain.profile.domain.entity.ProfileCard;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Slice;
+
+public interface ProfileCardRepositoryCustom {
+
+    Slice<ProfileCard> findByCondition(
+        Long cursorId, Long userId, Region region, Pageable pageable
+    );
+}

src/main/java/io/oeid/mogakgo/domain/profile/infrastructure/ProfileCardRepositoryCustomImpl.java

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+package io.oeid.mogakgo.domain.profile.infrastructure;
+
+import static io.oeid.mogakgo.domain.profile.domain.entity.QProfileCard.profileCard;
+
+import com.querydsl.core.types.dsl.BooleanExpression;
+import com.querydsl.jpa.impl.JPAQueryFactory;
+import io.oeid.mogakgo.domain.geo.domain.enums.Region;
+import io.oeid.mogakgo.domain.profile.domain.entity.ProfileCard;
+import java.util.List;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Slice;
+import org.springframework.data.domain.SliceImpl;
+import org.springframework.stereotype.Repository;
+
+@Repository
+@RequiredArgsConstructor
+public class ProfileCardRepositoryCustomImpl implements ProfileCardRepositoryCustom {
+
+    private final JPAQueryFactory jpaQueryFactory;
+
+    @Override
+    public Slice<ProfileCard> findByCondition(
+        Long cursorId, Long userId, Region region, Pageable pageable
+    ) {
+        List<ProfileCard> result = jpaQueryFactory.selectFrom(profileCard)
+            .where(
+                cursorIdEq(cursorId),
+                userIdEq(userId),
+                regionEq(region)
+            )
+            .limit(pageable.getPageSize() + 1)
+            .fetch();
+        boolean hasNext = checkLastPage(result, pageable);
+        return new SliceImpl<>(result, pageable, hasNext);
+    }
+
+    private BooleanExpression regionEq(Region region) {
+        return region != null ? profileCard.user.region.eq(region) : null;
+    }
+
+    private BooleanExpression userIdEq(Long userId) {
+        return userId != null ? profileCard.user.id.eq(userId) : null;
+    }
+
+    private BooleanExpression cursorIdEq(Long cursorId) {
+        return cursorId != null ? profileCard.id.gt(cursorId) : null;
+    }
+
+    private boolean checkLastPage(List<ProfileCard> profileCards, Pageable pageable) {
+        if (profileCards.size() > pageable.getPageSize()) {
+            profileCards.remove(pageable.getPageSize());
+            return true;
+        }
+        return false;
+    }
+}