19import java.util.List;
 20import java.util.Properties;
 21
 22@Controller 23public class UserWeb { 24    private static final String PROPERTY_PASSWORD = "password"; 25    private static final String PROPERTY_LOGIN = "login"; 26    private static final String PROPERTY_NAME = "name"; 27    private static final String PROPERTY_SURNAME = "surname"; 28    private static final String PROPERTY_EMAIL = "email"; 29    private static final String PROPERTY_STUDENT_NUMBER = "studentNumber"; 30    protected static final String STATUS_SUCCESS = "Success"; 31    private static final 32    SessionFactory factory = new Configuration().configure().buildSessionFactory(); 33    UserHibernateController userHibControl = new UserHibernateController(factory); 34 35    @RequestMapping(value = "user/getUser", method = RequestMethod.GET) 36    @ResponseStatus(value = HttpStatus.OK) 37    @ResponseBody 38    public String getUserById(@RequestParam("id") int id){ 39        return userHibControl.getUserById(id).toString(); 40    } 41 42    @RequestMapping(value = "user/userLogin", method = RequestMethod.POST) 43    @ResponseStatus(value = HttpStatus.OK) 44    @ResponseBody 45    private String getCurrentUser(@RequestBody String request){ 46        Connection connection = DbUtils.connectToDb(); 47        Gson gson = new Gson(); 48        Properties properties = gson.fromJson(request, Properties.class); 49        User user = userHibControl.getAllUsers().stream().filter(c -> c.getLogin().equals(properties.getProperty(PROPERTY_LOGIN))).filter(c -> c.getPassword().equals(properties.getProperty(PROPERTY_PASSWORD))).findFirst().orElse(null); 50        GsonBuilder gsonBuilder = new GsonBuilder(); 51        if(user instanceof Moderator){ 52            gsonBuilder.registerTypeAdapter(LocalDate.class, new LocalDateSerializer()).registerTypeAdapter(Moderator.class, new ModeratorSerializer()); 53        } 54        else gsonBuilder.registerTypeAdapter(LocalDate.class, new LocalDateSerializer()).registerTypeAdapter(Student.class, new StudentSerializer()); 55        Gson parser = gsonBuilder.create(); 56        DbUtils.disconnectFromDb(connection); 57        if(user != null) 58            return parser.toJson(user); 59        else return null; 60    } 61 62    @RequestMapping(value = "user/createStudent", method = RequestMethod.POST) 63    @ResponseStatus(value = HttpStatus.OK) 64    @ResponseBody 65    public String createStudent(@RequestBody String request){ 66        Gson gson = new Gson(); 67        Properties properties = gson.fromJson(request, Properties.class); 68        Student student = new Student(properties.getProperty(PROPERTY_LOGIN), properties.getProperty(PROPERTY_PASSWORD), properties.getProperty(PROPERTY_NAME), properties.getProperty(PROPERTY_SURNAME), properties.getProperty(PROPERTY_EMAIL), properties.getProperty(PROPERTY_STUDENT_NUMBER)); 69        userHibControl.createUser(student); 70        return STATUS_SUCCESS; 71    } 72 73    @RequestMapping(value = "user/getAllUsers", method = RequestMethod.GET) 74    @ResponseBody 75    public String getAllUsers(){ 76        List<User> users = userHibControl.getAllUsers(); 77        return users.toString(); 78    } 79 80    @RequestMapping(value = "user/getAllStudents", method = RequestMethod.GET) 81    @ResponseBody 82    public String getAllStudents(){ 83        List<Student> students = userHibControl.getAllStudents(); 84        GsonBuilder gson = new GsonBuilder(); 85        gson.registerTypeAdapter(Student.class, new StudentSerializer()); 86        Gson parser = gson.create(); 87        return parser.toJson(students); 88    } 89 90    @RequestMapping(value = "user/getAllModerators", method = RequestMethod.GET) 91    @ResponseBody 92    public String getAllModerators(){ 93        List<Moderator> moderators = userHibControl.getAllModerators(); 94        GsonBuilder gson = new GsonBuilder(); 95        gson.registerTypeAdapter(Moderator.class, new ModeratorSerializer()); 96        Gson parser = gson.create(); 97        return parser.toJson(moderators); 98    } 99100    @RequestMapping(value = "user/deleteUser", method = RequestMethod.DELETE)101    @ResponseBody102    public String deleteUser(@RequestParam("id") int id){103        userHibControl.removeUser(id);104        return STATUS_SUCCESS;105    }106107    @RequestMapping(value = "user/createMod", method = RequestMethod.POST)108    @ResponseStatus(value = HttpStatus.OK)109    @ResponseBody110    public String createMod(@RequestBody String request){111        Gson gson = new Gson();112        Properties properties = gson.fromJson(request, Properties.class);113        Moderator mod = new Moderator(properties.getProperty(PROPERTY_LOGIN), properties.getProperty(PROPERTY_PASSWORD), properties.getProperty(PROPERTY_NAME), properties.getProperty(PROPERTY_SURNAME), properties.getProperty(PROPERTY_EMAIL));114        userHibControl.createUser(mod);115        return STATUS_SUCCESS;116    }117118    @RequestMapping(value = "user/updateStudent", method = RequestMethod.PUT)119    @ResponseBody120    public String updateStudent(@RequestBody String request){121        Gson gson = new Gson();122        Properties properties = gson.fromJson(request, Properties.class);123        Student student = new Student(properties.getProperty(PROPERTY_LOGIN), properties.getProperty(PROPERTY_PASSWORD), properties.getProperty(PROPERTY_NAME), properties.getProperty(PROPERTY_SURNAME), properties.getProperty(PROPERTY_EMAIL), properties.getProperty(PROPERTY_STUDENT_NUMBER));124        userHibControl.editUser(student);125        return STATUS_SUCCESS;126    }127128    @RequestMapping(value = "user/updateMod", method = RequestMethod.PUT)129    @ResponseStatus(value = HttpStatus.OK)130    @ResponseBody131    public String updateMod(@RequestBody String request){132        Gson gson = new Gson();133        Properties properties = gson.fromJson(request, Properties.class);134        Moderator mod = new Moderator(properties.getProperty(PROPERTY_LOGIN), properties.getProperty(PROPERTY_PASSWORD), properties.getProperty(PROPERTY_NAME), properties.getProperty(PROPERTY_SURNAME), properties.getProperty(PROPERTY_EMAIL));135        userHibControl.editUser(mod);136        return STATUS_SUCCESS;137    }138}

14
15import static com.coursemngsys.coursemanagementsystem.webcontrollers.UserWeb.STATUS_SUCCESS;
16
17@Controller18public class FolderWeb {19    SessionFactory factory = new Configuration().configure().buildSessionFactory();20    FolderHibernateController folderHibControl = new FolderHibernateController(factory);2122    @RequestMapping(value = "folder/getFolder", method = RequestMethod.GET)23    @ResponseStatus(value = HttpStatus.OK)24    @ResponseBody25    public String getCourseById(@RequestParam("id") int id){26        return folderHibControl.getFolderById(id).toString();27    }2829    @RequestMapping(value = "folder/createFolder", method = RequestMethod.POST)30    @ResponseStatus(value = HttpStatus.OK)31    @ResponseBody32    public String createFolder(@RequestBody String request){33        Gson gson = new Gson();34        Properties properties = gson.fromJson(request, Properties.class);35        Folder folder = new Folder(properties.getProperty("name"));36        folderHibControl.createFolder(folder);37        return STATUS_SUCCESS;38    }3940    @RequestMapping(value = "folder/getAllFolders", method = RequestMethod.GET)41    @ResponseBody42    public String getAllFolders(){43        List<Folder> folders = folderHibControl.getAllFolders();44        return folders.toString();45    }4647    @RequestMapping(value = "folder/deleteFolder", method = RequestMethod.DELETE)48    @ResponseBody49    public String deleteFolder(@RequestParam("id") int id){50        folderHibControl.removeFolder(id);51        return STATUS_SUCCESS;52    }5354    @RequestMapping(value = "folder/updateFolder", method = RequestMethod.PUT)55    @ResponseBody56    public String updateFolder(@RequestBody String request){57        Gson gson = new Gson();58        Properties properties = gson.fromJson(request, Properties.class);59        Folder folder = new Folder(properties.getProperty("name"));60        folderHibControl.editFolder(folder);61        return STATUS_SUCCESS;62    }63}

14
15import static com.coursemngsys.coursemanagementsystem.webcontrollers.UserWeb.STATUS_SUCCESS;
16
17@Controller18public class FileWeb {19    SessionFactory factory = new Configuration().configure().buildSessionFactory();20    FileHibernateController fileHibControl = new FileHibernateController(factory);2122    @RequestMapping(value = "file/getFile", method = RequestMethod.GET)23    @ResponseStatus(value = HttpStatus.OK)24    @ResponseBody25    public String getFileById(@RequestParam("id") int id){26        return fileHibControl.getFileById(id).toString();27    }2829    @RequestMapping(value = "file/createFile", method = RequestMethod.POST)30    @ResponseStatus(value = HttpStatus.OK)31    @ResponseBody32    public String createFile(@RequestBody String request){33        Gson gson = new Gson();34        Properties properties = gson.fromJson(request, Properties.class);35        File file = new File(properties.getProperty("name"),properties.getProperty("location"));36        fileHibControl.createFile(file);37        return STATUS_SUCCESS;38    }3940    @RequestMapping(value = "file/getAllFiles", method = RequestMethod.GET)41    @ResponseBody42    public String getAllFiles(){43        List<File> files = fileHibControl.getAllFiles();44        return files.toString();45    }4647    @RequestMapping(value = "file/deleteFile", method = RequestMethod.DELETE)48    @ResponseBody49    public String deleteFile(@RequestParam("id") int id){50        fileHibControl.removeFile(id);51        return STATUS_SUCCESS;52    }5354    @RequestMapping(value = "file/updateFile", method = RequestMethod.PUT)55    @ResponseBody56    public String updateFile(@RequestBody String request){57        Gson gson = new Gson();58        Properties properties = gson.fromJson(request, Properties.class);59        File file = new File(properties.getProperty("name"),properties.getProperty("location"));60        fileHibControl.editFile(file);61        return STATUS_SUCCESS;62    }63}

18
19import static com.coursemngsys.coursemanagementsystem.webcontrollers.UserWeb.STATUS_SUCCESS;
20
21@Controller22public class CourseWeb {23    SessionFactory factory = new Configuration().configure().buildSessionFactory();24    CourseHibernateController courseHibControl = new CourseHibernateController(factory);2526    @RequestMapping(value = "course/getCourse", method = RequestMethod.GET)27    @ResponseStatus(value = HttpStatus.OK)28    @ResponseBody29    public String getCourseById(@RequestParam("id") int id){30        Course course = courseHibControl.getCourseById(id);31        GsonBuilder gson = new GsonBuilder();32        gson.registerTypeAdapter(LocalDate.class, new LocalDateSerializer()).registerTypeAdapter(Course.class, new CourseSerializer());33        Gson parser = gson.create();34        return parser.toJson(course);35    }3637    @RequestMapping(value = "course/createCourse", method = RequestMethod.POST)38    @ResponseStatus(value = HttpStatus.OK)39    @ResponseBody40    public String createCourse(@RequestBody String request){41        Gson gson = new Gson();42        Properties properties = gson.fromJson(request, Properties.class);43        Course course = new Course(properties.getProperty("title"), properties.getProperty("description"), LocalDate.parse(properties.getProperty("startDate")),LocalDate.parse(properties.getProperty("endDate")));44        courseHibControl.createCourse(course);45        return STATUS_SUCCESS;46    }4748    @RequestMapping(value = "course/getAllCourses", method = RequestMethod.GET)49    @ResponseBody50    public String getAllCourses(){51        List<Course> courses = courseHibControl.getAllCourses();52        GsonBuilder gson = new GsonBuilder();53        gson.registerTypeAdapter(Course.class, new CourseSerializer());54        Gson parser = gson.create();55        return parser.toJson(courses);56    }5758    @RequestMapping(value = "course/deleteCourse", method = RequestMethod.DELETE)59    @ResponseBody60    public String deleteCourse(@RequestParam("id") int id){61        courseHibControl.removeCourse(id);62        return STATUS_SUCCESS;63    }6465    @RequestMapping(value = "course/updateCourse", method = RequestMethod.PUT)66    @ResponseBody67    public String updateCourse(@RequestBody String request){68        Gson gson = new Gson();69        Properties properties = gson.fromJson(request, Properties.class);70        Course course = new Course(Integer.parseInt(properties.getProperty("id")), properties.getProperty("title"), properties.getProperty("description"));71        //, LocalDate.parse(properties.getProperty("startDate")),LocalDate.parse(properties.getProperty("endDate"))72        courseHibControl.editCourse(course);73        return STATUS_SUCCESS;74    }75}

 14import java.util.logging.Level;
 15import java.util.logging.Logger;
 16
 17public class UserHibernateController { 18    private SessionFactory factory = null; 19    private Logger logger = null; 20 21    public UserHibernateController(SessionFactory factory) { 22        this.factory = factory; 23        this.logger = Logger.getLogger(UserHibernateController.class.getName()); 24    } 25 26    private Session getSession() { 27        return factory.openSession(); 28    } 29 30    public void createUser(User user){ 31        Session session = null; 32        try{ 33            session = getSession(); 34            Transaction tx = session.beginTransaction(); 35            session.save(user); 36            tx.commit(); 37        } catch (Exception e){ 38            e.printStackTrace(); 39        } finally { 40            if(session != null){ 41                session.close(); 42            } 43        } 44    } 45 46    public void editUser(User user){ 47        Session session = null; 48        try{ 49            session = getSession(); 50            Transaction tx = session.beginTransaction(); 51            session.merge(user); 52            tx.commit(); 53        } catch (Exception e){ 54            e.printStackTrace(); 55        } finally { 56            if(session != null){ 57                session.close(); 58            } 59        } 60    } 61 62    public void removeUser(int id){ 63        Session session = null; 64        User user = null; 65        try{ 66            session = getSession(); 67            Transaction tx = session.beginTransaction(); 68            user = session.getReference(User.class, id); 69            session.remove(user); 70            tx.commit(); 71        } catch (Exception e){ 72            logger.log(Level.INFO,"No such user by given ID"); 73        } finally { 74            if(session != null){ 75                session.close(); 76            } 77        } 78    } 79 80    public User getUserById(int id){ 81        Session session = null; 82        User user = null; 83        try{ 84            session = getSession(); 85            Transaction tx = session.beginTransaction(); 86            user = session.find(User.class, id); 87            tx.commit(); 88        } catch (Exception e){ 89            logger.log(Level.INFO,"No such user by given ID"); 90        } 91        return user; 92    } 93 94    public List<User> getAllUsers(){ 95        Session session = null; 96        try { 97            session = getSession(); 98            CriteriaQuery<Object> query = session.getCriteriaBuilder().createQuery(); 99            query.select(query.from(User.class));100            Query q = session.createQuery(query);101            return q.getResultList();102        }catch (Exception e){103            e.printStackTrace();104        }finally {105            if(session != null){106                session.close();107            }108        }109        return Collections.emptyList();110    }111112    public List<Student> getAllStudents(){113        Session session = null;114        try {115            session = getSession();116            CriteriaQuery<Object> query = session.getCriteriaBuilder().createQuery();117            query.select(query.from(Student.class));118            Query q = session.createQuery(query);119            return q.getResultList();120        }catch (Exception e){121            e.printStackTrace();122        }finally {123            if(session != null){124                session.close();125            }126        }127        return Collections.emptyList();128    }129130    public List<Moderator> getAllModerators(){131        Session session = null;132        try {133            session = getSession();134            CriteriaQuery<Object> query = session.getCriteriaBuilder().createQuery();135            query.select(query.from(Moderator.class));136            Query q = session.createQuery(query);137            return q.getResultList();138        }catch (Exception e){139            e.printStackTrace();140        }finally {141            if(session != null){142                session.close();143            }144        }145        return Collections.emptyList();146    }147}

 11import java.util.Collections;
 12import java.util.List;
 13
 14public class FolderHibernateController { 15    private SessionFactory factory = null; 16 17    public FolderHibernateController(SessionFactory factory) { 18        this.factory = factory; 19    } 20 21    private Session getSession() { 22        return factory.openSession(); 23    } 24 25    public void createFolder(Folder folder){ 26        Session session = null; 27        try{ 28            session = getSession(); 29            Transaction tx = session.beginTransaction(); 30            session.save(folder); 31            tx.commit(); 32        } catch (Exception e){ 33            e.printStackTrace(); 34        } finally { 35            if(session != null){ 36                session.close(); 37            } 38        } 39    } 40 41    public void editFolder(Folder folder){ 42        Session session = null; 43        try{ 44            session = getSession(); 45            Transaction tx = session.beginTransaction(); 46            session.update(folder); 47            tx.commit(); 48        } catch (Exception e){ 49            e.printStackTrace(); 50        } finally { 51            if(session != null){ 52                session.close(); 53            } 54        } 55    } 56 57    public void removeFolder(int id){ 58        Session session = null; 59        try{ 60            session = getSession(); 61            Transaction tx = session.beginTransaction(); 62            Folder folder = null; 63            try{ 64                folder = session.getReference(Folder.class, id); 65                folder.getId(); 66            } catch (Exception e){ 67                System.out.println("No such folder by given ID"); 68            } 69            session.remove(folder); 70            tx.commit(); 71        } catch (Exception e){ 72            e.printStackTrace(); 73        } finally { 74            if(session != null){ 75                session.close(); 76            } 77        } 78    } 79 80    public Folder getFolderById(int id){ 81        Session session = null; 82        Folder folder = null; 83        try{ 84            session = getSession(); 85            Transaction tx = session.beginTransaction(); 86            folder = session.find(Folder.class, id); 87            folder.getId(); 88            tx.commit(); 89        } catch (Exception e){ 90            System.out.println("No such folder by given ID"); 91        } 92        return folder; 93    } 94 95    public List<Folder> getAllFolders(){ 96        Session session = null; 97        try { 98            session = getSession(); 99            CriteriaQuery<Object> query = session.getCriteriaBuilder().createQuery();100            query.select(query.from(Folder.class));101            Query q = session.createQuery(query);102            return q.getResultList();103        }catch (Exception e){104            e.printStackTrace();105        }finally {106            if(session != null){107                session.close();108            }109        }110        return Collections.emptyList();111    }112113}

 11import java.util.Collections;
 12import java.util.List;
 13
 14public class FileHibernateController { 15    private SessionFactory factory = null; 16 17    public FileHibernateController(SessionFactory factory) { 18        this.factory = factory; 19    } 20 21    private Session getSession() { 22        return factory.openSession(); 23    } 24 25    public void createFile(File file){ 26        Session session = null; 27        try{ 28            session = getSession(); 29            Transaction tx = session.beginTransaction(); 30            session.save(file); 31            tx.commit(); 32        } catch (Exception e){ 33            e.printStackTrace(); 34        } finally { 35            if(session != null){ 36                session.close(); 37            } 38        } 39    } 40 41    public void editFile(File file){ 42        Session session = null; 43        try{ 44            session = getSession(); 45            Transaction tx = session.beginTransaction(); 46            session.update(file); 47            tx.commit(); 48        } catch (Exception e){ 49            e.printStackTrace(); 50        } finally { 51            if(session != null){ 52                session.close(); 53            } 54        } 55    } 56 57    public void removeFile(int id){ 58        Session session = null; 59        try{ 60            session = getSession(); 61            Transaction tx = session.beginTransaction(); 62            File file = null; 63            try{ 64                file = session.getReference(File.class, id); 65                file.getId(); 66            } catch (Exception e){ 67                System.out.println("No such user by given ID"); 68            } 69            session.remove(file); 70            tx.commit(); 71        } catch (Exception e){ 72            e.printStackTrace(); 73        } finally { 74            if(session != null){ 75                session.close(); 76            } 77        } 78    } 79 80    public File getFileById(int id){ 81        Session session = null; 82        File file = null; 83        try{ 84            session = getSession(); 85            Transaction tx = session.beginTransaction(); 86            file = session.find(File.class, id); 87            file.getId(); 88            tx.commit(); 89        } catch (Exception e){ 90            System.out.println("No such user by given ID"); 91        } 92        return file; 93    } 94 95    public List<File> getAllFiles(){ 96        Session session = null; 97        try { 98            session = getSession(); 99            CriteriaQuery<Object> query = session.getCriteriaBuilder().createQuery();100            query.select(query.from(File.class));101            Query q = session.createQuery(query);102            return q.getResultList();103        }catch (Exception e){104            e.printStackTrace();105        }finally {106            if(session != null){107                session.close();108            }109        }110        return Collections.emptyList();111    }112113}

 10import java.util.Collections;
 11import java.util.List;
 12
 13public class CourseHibernateController { 14    private SessionFactory factory; 15 16 17    public CourseHibernateController(SessionFactory factory) { 18        this.factory = factory; 19    } 20 21    private Session getSession() { 22        return factory.openSession(); 23    } 24 25    public void createCourse(Course course){ 26        Session session = null; 27        try{ 28            session = getSession(); 29            Transaction transaction = session.beginTransaction(); 30 31            session.save(course); 32            transaction.commit(); 33        } catch (Exception e){ 34            e.printStackTrace(); 35        } finally { 36            if(session != null){ 37                session.close(); 38            } 39        } 40    } 41 42    public void editCourse(Course course){ 43        Session session = null; 44        try{ 45            session = getSession(); 46            Transaction tx = session.beginTransaction(); 47            session.merge(course); 48            tx.commit(); 49        } catch (Exception e){ 50            e.printStackTrace(); 51        } finally { 52            if(session != null){ 53                session.close(); 54            } 55        } 56    } 57 58    public void removeCourse(int id){ 59        Session session = null; 60        try{ 61            session = getSession(); 62            Transaction tx = session.beginTransaction(); 63            Course course = null; 64            course = getCourseById(id); 65            session.remove(course); 66            tx.commit(); 67        } catch (Exception e){ 68            e.printStackTrace(); 69        } finally { 70            if(session != null){ 71                session.close(); 72            } 73        } 74    } 75 76    public Course getCourseById(int id){ 77        Session session = null; 78        Course course = null; 79        try{ 80            session = getSession(); 81            Transaction tx = session.beginTransaction(); 82            course = session.find(Course.class, id); 83            course.getId(); 84            tx.commit(); 85        } catch (Exception e){ 86            System.out.println("No such course by given ID"); 87        } 88        return course; 89    } 90 91        public List<Course> getAllCourses(){ 92        Session session = null; 93        try { 94            session = getSession(); 95            CriteriaQuery<Object> query = session.getCriteriaBuilder().createQuery(); 96            query.select(query.from(Course.class)); 97            Query q = session.createQuery(query); 98            return q.getResultList(); 99        }catch (Exception e){100            e.printStackTrace();101        }finally {102            if(session != null){103                session.close();104            }105        }106        return Collections.emptyList();107    }108}

 26import java.util.Objects;
 27import java.util.ResourceBundle;
 28
 29public class SignUpForm { 30    @FXML 31    private TextField loginField; 32    @FXML 33    private PasswordField passwordField; 34    @FXML 35    private RadioButton studentRadioButton; 36    @FXML 37    private RadioButton moderatorRadioButton; 38    @FXML 39    private TextField nameField; 40    @FXML 41    private TextField surnameField; 42    @FXML 43    private TextField emailField; 44    @FXML 45    private TextField repeatedPasswordField; 46    @FXML 47    private ToggleGroup userType; 48    private Connection connection; 49 50    public void createUser(ActionEvent actionEvent) throws IOException{ 51        DbUtils.createDb(); 52        connection = DbUtils.connectToDb(); 53        SessionFactory factory = new Configuration().configure().buildSessionFactory(); 54        UserHibernateController userHibControl = new UserHibernateController(factory); 55 56        if(loginField.getText() == "" || passwordField.getText() == "" || repeatedPasswordField.getText() == "" || nameField.getText() == "" || surnameField.getText() == "" || emailField.getText() == "") { 57            Alert.alertError("Some fields are empty."); 58        } else if(arePasswordsMatching(passwordField.getText(), repeatedPasswordField.getText())){ 59            if (studentRadioButton.isSelected()) { 60                String studentNumber = generateStudentNumber(); 61                Student student = new Student(loginField.getText(),passwordField.getText(),nameField.getText(),surnameField.getText(),emailField.getText(),studentNumber); 62                userHibControl.createUser(student); 63            } else { 64                Moderator moderator = new Moderator(loginField.getText(),passwordField.getText(),nameField.getText(),surnameField.getText(),emailField.getText()); 65                userHibControl.createUser(moderator); 66            } 67            Alert.alertMessage("User created successfully."); 68            returnToPrevious(); 69        } 70        else { 71            Alert.alertError("Passwords do not match."); 72        } 73        DbUtils.disconnectFromDb(connection); 74    } 75 76    private void returnToPrevious() throws IOException { 77        FXMLLoader fxmlLoader = new FXMLLoader(Main.class.getResource("login-window.fxml")); 78        Parent root = fxmlLoader.load(); 79        Scene scene = new Scene(root); 80 81        Stage stage = (Stage) loginField.getScene().getWindow(); 82        stage.setScene(scene); 83        stage.show(); 84    } 85 86    private String generateStudentNumber(){ 87        int min = 1000; 88        int max = 9999; 89        int randomStudentNr = (int)Math.floor(Math.random()*(max-min+1)+min); 90        return Year.now().getValue() + String.valueOf(randomStudentNr); 91    } 92 93    private boolean arePasswordsMatching(String password, String repeatedPassword){ 94        if(Objects.equals(password, repeatedPassword)){ 95            return true; 96        } 97        return false; 98    } 99100}

 23import java.net.URL;
 24import java.util.ResourceBundle;
 25
 26public class ModeratorCoursesWindow { 27    @FXML 28    private ListView<Course> coursesList; 29    @FXML 30    private TextField name; 31    @FXML 32    private TextField surname; 33    @FXML 34    private PasswordField password; 35    @FXML 36    private TextField email; 37    private Moderator moderator; 38    private SessionFactory factory = null; 39 40    public void getModerator(Moderator mod) { 41        this.moderator = mod; 42        fillList(); 43    } 44 45    public void fillList() { 46        ObservableList<Course> courses = FXCollections.observableArrayList(moderator.getModeratedCourses()); 47        coursesList.setItems(courses); 48    } 49 50    public void openNewCourseForm(ActionEvent actionEvent) throws IOException { 51 52        FXMLLoader fxmlLoader = new FXMLLoader(Main.class.getResource("new-course-form.fxml")); 53        Parent root = fxmlLoader.load(); 54 55        NewCourseForm newCourseForm = fxmlLoader.getController(); 56        newCourseForm.getData(moderator, this); 57        Scene scene = new Scene(root); 58 59        Stage stage = new Stage(); 60        stage.setScene(scene); 61        stage.show(); 62    } 63 64    public void setUserInfo(Event event) { 65        name.setText(moderator.getName()); 66        surname.setText(moderator.getSurname()); 67        email.setText(moderator.getEmail()); 68    } 69 70    public void updateUser(ActionEvent actionEvent) { 71        factory = new Configuration().configure().buildSessionFactory(); 72        UserHibernateController userHibControl = new UserHibernateController(factory); 73        moderator.setEmail(email.getText()); 74        if(!password.getText().equals("")) { 75            moderator.setPassword(password.getText()); 76        } 77        userHibControl.editUser(moderator); 78        Alert.alertMessage("User updated successfully."); 79    } 80 81    public void deleteUser(ActionEvent actionEvent) { 82        factory = new Configuration().configure().buildSessionFactory(); 83        UserHibernateController userHibControl = new UserHibernateController(factory); 84        userHibControl.removeUser(moderator.getId()); 85        Alert.alertMessage("User deleted successfully."); 86    } 87 88    public void selectCourse(MouseEvent mouseEvent) throws IOException { 89        FXMLLoader fxmlLoader = new FXMLLoader(Main.class.getResource("selected-course-window.fxml")); 90        Parent root = fxmlLoader.load(); 91 92        SelectedCourseWindow selectedCourseWindow = fxmlLoader.getController(); 93        selectedCourseWindow.getData(coursesList.getSelectionModel().getSelectedItem(), moderator, this); 94        Scene scene = new Scene(root); 95 96        Stage stage = new Stage(); 97        stage.setScene(scene); 98        stage.show(); 99    }100}