Refactoring Örnek - 1

refactoring-ornek-1.java

public List<Trip> getTripsByUser(User user) throws UserNotLoggedInException {
    List<Trip> tripList = new ArrayList<Trip>();
    User loggedUser = UserSession.getInstance().getLoggedUser();
    boolean isFriend = false;
    if (loggedUser != null) {
        for (User friend : user.getFriends()) {
            if (friend.equals(loggedUser)) {
                isFriend = true;
                break;
            }
        }
        if (isFriend) {
            tripList = TripDAO.findTripsByUser(user);
        }
        return tripList;
    } else {
        throw new UserNotLoggedInException();
    }
}