private UserTransaction utx;
public Importer(EntityManager em, UserTransaction utx) {
this.em = em;
defaultDAO = new DefaultDAO();
regionAdmDAO = new RegionAdmDAO();
countryDAO = new CountryDAO();
defaultDAO.setEntityManager(em);
regionAdmDAO.setEntityManager(em);
countryDAO.setEntityManager(em);
this.utx = utx;