@PostConstruct
 public void Init() {
   HttpServletRequest request =
       (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();
   usu = (PubUsuario) request.getSession().getAttribute("usuario");
   selectedSituacao = (WflSituacao) request.getSession().getAttribute("selectedSituacao");
   try {
     listSituacaos = sitDAO.listAllSituacao();
     listEmpresas = empDAO.listAllEmpresas();
     listSistemas = sisDAO.listAllSistemas();
   } catch (SQLException ex) {
     Logger.getLogger(AdminSituacaoController.class.getName()).log(Level.SEVERE, null, ex);
   }
 }