[R5] Patient use case for Save and FindById

src/main/java/com/mirna/hospitalmanagementapi/application/usecase/patient/FindPatientByIdUseCase.java

@@ -0,0 +1,32 @@
+package com.mirna.hospitalmanagementapi.application.usecase.patient;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import com.mirna.hospitalmanagementapi.domain.entities.Patient;
+import com.mirna.hospitalmanagementapi.domain.repositories.PatientRepository;
+
+/**
+ * This class is used to execute the findById method 
+ * 
+ * @author Mirna Gama
+ * @version 1.0
+ */
+@Component
+public class FindPatientByIdUseCase {
+
+	@Autowired
+	private PatientRepository patientRepository;
+	
+	/**
+	 * Executes the findById method from Patient repository
+	 * 
+	 * @param id A long representing the patient's unique identifier
+	 * 
+	 * @return The corresponding patient if successful, or null if it is non-existent
+	 *
+	 */
+	public Patient execute(Long id) {
+		return patientRepository.findById(id).orElse(null);
+	}
+}

src/main/java/com/mirna/hospitalmanagementapi/application/usecase/patient/SavePatientUseCase.java

@@ -0,0 +1,31 @@
+package com.mirna.hospitalmanagementapi.application.usecase.patient;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import com.mirna.hospitalmanagementapi.domain.entities.Patient;
+import com.mirna.hospitalmanagementapi.domain.repositories.PatientRepository;
+
+/**
+ * This class is used to execute the save method from patient repository
+ * 
+ * @author Mirna Gama
+ * @version 1.0
+ */
+@Component
+public class SavePatientUseCase {
+
+	@Autowired
+	private PatientRepository patientRepository;
+	
+	/**
+	 * Executes the save method from Patient repository
+	 * 
+	 * @param patient The Patient to be saved in the repository
+	 * @return The saved patient if successful, or null if there is an error
+	 *
+	 */
+	public Patient execute(Patient patient) {
+        return this.patientRepository.save(patient);
+    }
+}