public ViewRequestsDTO viewRequestsMadeByUser(long userId) {
        UsersDao userDao = daoFactory.getUsersDao();
        User user = userDao.find(userId);
        RequestsDao requestsDao = daoFactory.getRequestsDao();
        Set<Request> requests = requestsDao.findByUserId(userId);

        String name = user.getUserName();
        ViewRequestsDTO result = new ViewRequestsDTO(name);

        double totalRequests = 0;

        for (Request request : requests) {
            result.getRequests().add(createRequestDTO(request));
            totalRequests++;
        }

        result.setTotal(totalRequests);
        return result;
    }

    private RequestDTO createRequestDTO(Request request) {
        return new RequestDTO(request.getId(), request.getDate(),
                                request.getRequestedCar().getVin(), request.getRequestedCar().getId());
    }

public static void main(String[] args) throws IOException {
        DaoFactory daoFactory = DaoFactory.getInstance(DaoFactory.Type.HIBERNATE);
        insertInitialData(daoFactory);

        UserOperations transactionScript = new UserOperations(daoFactory, USER_ID);

        ViewRequestsDTO viewRequests = transactionScript.viewRequestsMadeByUser(USER_ID);

        if (viewRequests != null) {
            System.out.println();
            System.out.println("Name : " + viewRequests.getUserName());
            viewRequests.getRequests().forEach(System.out::println);
            //viewRequests.getCars().forEach(System.out::println);
            System.out.println("Total of requests is: " + viewRequests.getTotal());
        }

        // wait for key pressed
        System.in.read();
        HibernateUtil.getSessionFactory().close();
    }