public void save(Manager manager) {

    managerDao.save(manager);
  }
  public Manager getByManagerName(String managerName) {

    return managerDao.getByManagerName(managerName);
  }
  public Manager isValidManager(String managerName, String password) {

    return managerDao.isValidManager(managerName, password);
  }
  public Manager getByManagerID(String managerID) {

    return managerDao.getByManagerID(managerID);
  }
  public List<Manager> getAll() {

    return managerDao.getAll();
  }
 public void deleteByManagerId(String managerID) {
   managerDao.deleteByManagerID(managerID);
 }
 public void delete(Manager manager) {
   managerDao.delete(manager);
 }