private void createDeliveryType(int number, String description) {
DeliveryType type = new DeliveryType();
type.setNumber(number);
type.setDescription(description);
XPersistence.getManager().persist(type);
XPersistence.commit();
}
private void deleteDeliveryType(int number) {
DeliveryType type = XPersistence.getManager().find(DeliveryType.class, number);
XPersistence.getManager().remove(type);
XPersistence.commit();
}