protected List<IPortalDataType> getAllowedTypes(PortletRequest request, String activityName, Iterable<IPortalDataType> dataTypes) {
// get the authorization principal representing the current user
final HttpServletRequest httpServletRequest = this.portalRequestUtils.getPortletHttpRequest(request);
final IPerson person = personManager.getPerson(httpServletRequest);
final EntityIdentifier ei = person.getEntityIdentifier();
final IAuthorizationPrincipal ap = AuthorizationService.instance().newPrincipal(ei.getKey(), ei.getType());
// filter the list of configured import/export types by user permission
final List<IPortalDataType> results = new ArrayList<IPortalDataType>();
for (IPortalDataType type : dataTypes) {
final String typeId = type.getTypeId();