private void doLogin( ActionEvent event,
PortletRequest request )
throws PortletException
{
PortletContext context = event.getPortlet( ).getPortletConfig( ).getPortletContext( );
LoginService service = ( LoginService ) context.getService( LoginService.NAME );
if ( !service.login( request ) )
{
ValidationHelper.addError( "error_login_failed", event );
doSignin( event, request );
}
else