@Override
  public void preProcess() {
    model = (User) request.data;

    domain = new com.maplelabs.framework.guestbook.domain.User();

    domain.setId(model.getId());
    domain.setUsername(model.getUsername());
    domain.setPassword(model.getPassword());
    domain.setEmailAddress(model.getEmailAddress());
    domain.setAddress(model.getAddress());
    domain.setCreationTime(model.getCreationTime());
  }