[KW-520] feat: 구역 목록 조회 페이지네이션 api

src/main/java/com/doubleo/hospitalservice/domain/area/controller/AreaController.java

@@ -5,6 +5,8 @@
 import io.swagger.v3.oas.annotations.Operation;
 import java.util.List;
 import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.web.bind.annotation.*;
 
 @RestController
@@ -19,4 +21,15 @@ public class AreaController {
     public List<AreaInfoResponse> areaListGetByBuildingId(@PathVariable Long buildingId) {
         return areaService.getAreaListByBuildingId(buildingId);
     }
+
+    @GetMapping("/{buildingId}/areas/paged")
+    @Operation(
+            summary = "Get Paged Areas by Building ID",
+            description = "건물 ID로 구역 리스트 조회 - 페이지네이션")
+    public Page<AreaInfoResponse> pagedAreaListGetByBuildingId(
+            @PathVariable Long buildingId,
+            @RequestParam(required = false) String keyword,
+            Pageable pageable) {
+        return areaService.pagedAreaListGetByBuildingId(buildingId, keyword, pageable);
+    }
 }

src/main/java/com/doubleo/hospitalservice/domain/area/repository/AreaRepository.java

@@ -3,10 +3,17 @@
 import com.doubleo.hospitalservice.domain.area.domain.Area;
 import java.util.List;
 import java.util.Optional;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface AreaRepository extends JpaRepository<Area, Long> {
     List<Area> findAllByBuilding_BuildingId(Long buildingId);
 
+    Page<Area> findByBuilding_BuildingId(Long buildingId, Pageable pageable);
+
     Optional<Area> findByTenantIdAndAreaCode(String tenantId, String areaCode);
+
+    Page<Area> findByBuilding_BuildingIdAndAreaNameContainingIgnoreCase(
+            Long buildingId, String keyword, Pageable pageable);
 }

src/main/java/com/doubleo/hospitalservice/domain/area/service/AreaService.java

@@ -2,7 +2,12 @@
 
 import com.doubleo.hospitalservice.domain.area.dto.response.AreaInfoResponse;
 import java.util.List;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 
 public interface AreaService {
     List<AreaInfoResponse> getAreaListByBuildingId(Long buildingId);
+
+    Page<AreaInfoResponse> pagedAreaListGetByBuildingId(
+            Long buildingId, String keyword, Pageable pageable);
 }

src/main/java/com/doubleo/hospitalservice/domain/area/service/AreaServiceImpl.java

@@ -1,13 +1,17 @@
 package com.doubleo.hospitalservice.domain.area.service;
 
+import com.doubleo.hospitalservice.domain.area.domain.Area;
 import com.doubleo.hospitalservice.domain.area.dto.response.AreaInfoResponse;
 import com.doubleo.hospitalservice.domain.area.repository.AreaRepository;
 import com.doubleo.hospitalservice.domain.building.repository.BuildingRepository;
+import com.doubleo.hospitalservice.global.config.util.TenantValidator;
 import com.doubleo.hospitalservice.global.exception.CommonException;
 import com.doubleo.hospitalservice.global.exception.errorcode.BuildingErrorCode;
 import jakarta.transaction.Transactional;
 import java.util.List;
 import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 
 @Service
@@ -17,6 +21,7 @@ public class AreaServiceImpl implements AreaService {
 
     private final AreaRepository areaRepository;
     private final BuildingRepository buildingRepository;
+    private final TenantValidator tenantValidator;
 
     public List<AreaInfoResponse> getAreaListByBuildingId(Long buildingId) {
 
@@ -30,4 +35,26 @@ public List<AreaInfoResponse> getAreaListByBuildingId(Long buildingId) {
                 .map(AreaInfoResponse::from)
                 .toList();
     }
+
+    public Page<AreaInfoResponse> pagedAreaListGetByBuildingId(
+            Long buildingId, String keyword, Pageable pageable) {
+
+        String tenantId = tenantValidator.getTenantId();
+
+        if (!buildingRepository.existsByTenantIdAndBuildingId(tenantId, buildingId)) {
+            throw new CommonException(BuildingErrorCode.BUILDING_NOT_FOUND);
+        }
+
+        Page<Area> areaPage;
+
+        if (keyword == null || keyword.isBlank()) {
+            areaPage = areaRepository.findByBuilding_BuildingId(buildingId, pageable);
+        } else {
+            areaPage =
+                    areaRepository.findByBuilding_BuildingIdAndAreaNameContainingIgnoreCase(
+                            buildingId, keyword, pageable);
+        }
+
+        return areaPage.map(AreaInfoResponse::from);
+    }
 }

src/main/java/com/doubleo/hospitalservice/domain/building/repository/BuildingRepository.java

@@ -18,4 +18,6 @@ Page<Building> findByTenantIdAndBuildingNameContainingIgnoreCase(
             String tenantId, String keyWord, Pageable pageable);
 
     Optional<Building> findByTenantIdAndBuildingCode(String tenantId, String buildingCode);
+
+    boolean existsByTenantIdAndBuildingId(String tenantId, Long buildingId);
 }

src/main/java/com/doubleo/hospitalservice/global/config/web/WebConfig.java

@@ -15,7 +15,7 @@ public void addArgumentResolvers(List<HandlerMethodArgumentResolver> resolvers)
         PageableHandlerMethodArgumentResolver resolver =
                 new PageableHandlerMethodArgumentResolver();
         resolver.setMaxPageSize(500);
-        resolver.setFallbackPageable(PageRequest.of(0, 10));
+        resolver.setFallbackPageable(PageRequest.of(0, 5));
         resolvers.add(resolver);
     }
 }