@Transactional
 public List getAllStudents() {
   return studentDAO.getAllStudents();
 }
 @Transactional
 public Student getStudent(int studentID) {
   return studentDAO.getStudent(studentID);
 }
 @Transactional
 public void edit(Student student) {
   studentDAO.edit(student);
 }
 @Transactional
 public void delete(int studentID) {
   studentDAO.delete(studentID);
 }
 @Transactional
 public void add(Student student) {
   studentDAO.add(student);
 }