Changing ResourceNotFoundException usage

core/src/main/java/cz/muni/fi/pa165/core/facade/flight/FlightFacadeImpl.java

@@ -38,7 +38,7 @@ public class FlightFacadeImpl implements FlightFacade<Long> {
     @Override
     public Optional<FlightDto> findById(Long id) {
         var foundFlightEntity = flightService.findById(id)
-                .orElseThrow(() -> new ResourceNotFoundException("Not Found."));
+                .orElseThrow(ResourceNotFoundException::new);
 
         var flightDto = flightMapper.toDto(foundFlightEntity);
         flightDto.setStewards(mapStewardDtos(foundFlightEntity));

core/src/main/java/cz/muni/fi/pa165/core/facade/steward/StewardFacadeImpl.java

@@ -43,7 +43,7 @@ public class StewardFacadeImpl implements StewardFacade<Long> {
     @Override
     public Optional<StewardDto> findById(Long id) {
         var foundStewardEntity = stewardService.findById(id)
-                .orElseThrow(() -> new ResourceNotFoundException("Not Found."));
+                .orElseThrow(ResourceNotFoundException::new);
 
         var stewardDto = stewardMapper.toDto(foundStewardEntity);
         stewardDto.setFlights(mapFlightDtos(foundStewardEntity));
@@ -92,10 +92,10 @@ public class StewardFacadeImpl implements StewardFacade<Long> {
     public StewardDto assignStewardFlight(Long stewardId, Long flightId) {
         var stewardEntity = stewardService.findByIdWithFlights(stewardId)
                 .orElse(stewardService.findById(stewardId)
-                        .orElseThrow(() -> new ResourceNotFoundException("Not Found.")));
+                        .orElseThrow(ResourceNotFoundException::new));
 
         var flightEntity = flightService.findById(flightId)
-                .orElseThrow(() -> new ResourceNotFoundException("Not Found."));
+                .orElseThrow(ResourceNotFoundException::new);
 
         var flightSteward = new FlightSteward();
         flightSteward.setSteward(stewardEntity);
@@ -111,10 +111,10 @@ public class StewardFacadeImpl implements StewardFacade<Long> {
     @Override
     public void deleteStewardFlightsAssignment(Long stewardId, Long flightId) {
         var stewardEntity = stewardService.findById(stewardId)
-                        .orElseThrow(() -> new ResourceNotFoundException("Not Found."));
+                        .orElseThrow(ResourceNotFoundException::new);
 
         var flightEntity = flightService.findById(flightId)
-                .orElseThrow(() -> new ResourceNotFoundException("Not Found."));
+                .orElseThrow(ResourceNotFoundException::new);
 
         stewardService.deleteFlightStewards(stewardEntity, flightEntity);
     }

core/src/main/java/cz/muni/fi/pa165/core/service/flight/FlightServiceImpl.java

@@ -28,7 +28,7 @@ public class FlightServiceImpl extends BaseServiceImpl<Flight, Long> implements
     @Override
     public Flight update(Long id, Flight newFlight) {
         var entityToUpdate = flightRepository.findById(id)
-                .orElseThrow(() -> new ResourceNotFoundException("Not Found."));
+                .orElseThrow(ResourceNotFoundException::new);
 
         entityToUpdate.setDepartureTime(newFlight.getDepartureTime());
         entityToUpdate.setArrivalTime(newFlight.getArrivalTime());

core/src/main/java/cz/muni/fi/pa165/core/service/steward/StewardServiceImpl.java

@@ -38,14 +38,14 @@ public class StewardServiceImpl extends BaseServiceImpl<Steward, Long> implement
     @Override
     public void deleteFlightStewards(Steward steward, Flight flight) {
         var foundFlightStewards = flightStewardRepository.findByStewardAndFlight(steward, flight)
-                .orElseThrow(() -> new ResourceNotFoundException("Not Found."));
+                .orElseThrow(ResourceNotFoundException::new);
         flightStewardRepository.delete(foundFlightStewards);
     }
 
     @Override
     public Steward update(Long id, Steward newSteward) {
         var entityToUpdate = stewardRepository.findById(id)
-                .orElseThrow(() -> new ResourceNotFoundException("Not Found."));
+                .orElseThrow(ResourceNotFoundException::new);
 
         entityToUpdate.setFirstName(newSteward.getFirstName());
         entityToUpdate.setLastName(newSteward.getLastName());