[R2] Implement pagination

src/main/java/com/mirna/hospitalmanagementapi/application/controllers/DoctorController.java

@@ -3,6 +3,8 @@ package com.mirna.hospitalmanagementapi.application.controllers;
 import java.util.List;
 
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PostMapping;
@@ -49,16 +51,16 @@ public class DoctorController {
 	}
 	
 	/**
-	 * Get method to receive a list of objects containing data transfer objects with Doctor public information
+	 * Get method to receive a paginated sublist of objects containing data transfer objects with Doctor public information
 	 *
-	 * @param 
+	 * @param pageable Pagination information, such as size and page number
 	 * 
-	 * @return A response entity containing the list of doctors if successful
+	 * @return A response entity containing the paginated sublist of doctors if successful
 	 */
 	@GetMapping
-	public ResponseEntity<Object> getDoctors() {
+	public ResponseEntity<Object> getDoctors(Pageable pageable) {
 		
-		List<DoctorPublicDataDTO> doctors = doctorService.findDoctors();
+		Page<DoctorPublicDataDTO> doctors = doctorService.findDoctors(pageable);
 		
 		return ResponseEntity.ok(doctors);
 	}

src/main/java/com/mirna/hospitalmanagementapi/application/services/DoctorServiceImpl.java

@@ -1,12 +1,12 @@
 package com.mirna.hospitalmanagementapi.application.services;
 
-import java.util.List;
-
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 
 import com.mirna.hospitalmanagementapi.application.usecase.doctor.AddDoctorUseCase;
-import com.mirna.hospitalmanagementapi.application.usecase.doctor.FindAllDoctorsUseCase;
+import com.mirna.hospitalmanagementapi.application.usecase.doctor.FindDoctorsUseCase;
 import com.mirna.hospitalmanagementapi.domain.dtos.DoctorDTO;
 import com.mirna.hospitalmanagementapi.domain.dtos.DoctorPublicDataDTO;
 import com.mirna.hospitalmanagementapi.domain.entities.Doctor;
@@ -28,7 +28,7 @@ public class DoctorServiceImpl implements DoctorService {
 	private AddDoctorUseCase addDoctor;
 	
 	@Autowired
-	private FindAllDoctorsUseCase findAllDoctors;
+	private FindDoctorsUseCase findDoctors;
 	
 	/**
 	 * Adds a new doctor to the database.
@@ -47,11 +47,13 @@ public class DoctorServiceImpl implements DoctorService {
 	/**
 	 * Finds doctors from the database.
 	 *
-	 * @return A paginated list containing data transfer objects with doctors public information in the repository
+	 * @param pageable Pagination information, such as size and page number
+	 * 
+	 * @return A paginated sublist containing data transfer objects with doctors public information in the repository
 	 */
 	@Override
-	public List<DoctorPublicDataDTO> findDoctors() {
+	public Page<DoctorPublicDataDTO> findDoctors(Pageable pageable) {
-		return findAllDoctors.execute().stream().map(DoctorPublicDataDTO::new).toList();
+		return findDoctors.execute(pageable).map(DoctorPublicDataDTO::new);
 	}
 
 }

src/main/java/com/mirna/hospitalmanagementapi/application/usecase/doctor/FindDoctorsUseCase.java

@@ -3,6 +3,8 @@ package com.mirna.hospitalmanagementapi.application.usecase.doctor;
 import java.util.List;
 
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Component;
 
 import com.mirna.hospitalmanagementapi.domain.entities.Doctor;
@@ -15,7 +17,7 @@ import com.mirna.hospitalmanagementapi.domain.repositories.DoctorRepository;
  * @version 1.0
  */
 @Component
-public class FindAllDoctorsUseCase {
+public class FindDoctorsUseCase {
 
 	@Autowired
 	private DoctorRepository doctorRepository;
@@ -23,10 +25,12 @@ public class FindAllDoctorsUseCase {
 	/**
 	 * Executes the findAll method from Doctor repository
 	 * 
-	 * @return The list of all stored doctors if successful, or null if there is an error
+	 * @param pageable Pagination information, such as size and page number
+	 * 
+	 * @return A paginated list with stored doctors if successful, or null if there is an error
 	 *
 	 */
-	public List<Doctor> execute() {
+	public Page<Doctor> execute(Pageable pageable) {
-        return this.doctorRepository.findAll();
+        return this.doctorRepository.findAll(pageable);
     }
 }

src/main/java/com/mirna/hospitalmanagementapi/domain/services/DoctorService.java

@@ -2,6 +2,9 @@ package com.mirna.hospitalmanagementapi.domain.services;
 
 import java.util.List;
 
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+
 import com.mirna.hospitalmanagementapi.domain.dtos.DoctorDTO;
 import com.mirna.hospitalmanagementapi.domain.dtos.DoctorPublicDataDTO;
 import com.mirna.hospitalmanagementapi.domain.entities.Doctor;
@@ -24,10 +27,12 @@ public interface DoctorService {
     public Doctor addDoctor(DoctorDTO doctorDTO);
     
     /**
-	 * Retrieves a list of doctors.
+	 * Retrieves a paginated sublist of doctors.
 	 * 
-	 * @return  A list containing data transfer objects with doctors public information in the repository
+	 * @param pageable Pagination information, such as size and page number
+	 *  
+	 * @return A paginated sublist containing data transfer objects with doctors public information in the repository
 	 */
-    public List<DoctorPublicDataDTO> findDoctors();
+    public Page<DoctorPublicDataDTO> findDoctors(Pageable pageable);
 
 }