/**
  * Invoke an action given its name
  *
  * This function requests information necessary to operate on
  * VSES017 AIS application
  *
  * @param Trace $trace trace object
  * @param string $action action name
  * @param Context $context fajr context
  */
 public function invokeAction(Trace $trace, $action, Context $context)
 {
     $request = $context->getRequest();
     $response = $context->getResponse();
     Preconditions::checkIsString($action);
     $this->screenFactory = new VSES017\VSES017_factory($context->getAisConnection());
     $this->adminStudia = $this->screenFactory->newAdministraciaStudiaScreen($trace);
     $this->studium = $request->getParameter('studium', '0');
     $this->zoznamStudii = $this->adminStudia->getZoznamStudii($trace->addChild("Get Zoznam Studii:"));
     $this->zapisneListy = $this->adminStudia->getZapisneListy($trace->addChild('getZapisneListy'), $this->studium);
     $this->zapisnyList = $request->getParameter('list');
     if (empty($this->zapisnyList)) {
         $tmp = $this->zapisneListy->getData();
         $lastList = end($tmp);
         $this->zapisnyList = $lastList['index'];
     }
     $this->terminyHodnoteniaScreen = $this->screenFactory->newTerminyHodnoteniaScreen($trace, $this->adminStudia->getZapisnyListIdFromZapisnyListIndex($trace, $this->zapisnyList), $this->adminStudia->getStudiumIdFromZapisnyListIndex($trace, $this->zapisnyList));
     // FIXME: chceme to nejak refaktorovat, aby sme nevytvarali zbytocne
     // objekty, ktore v konstruktore robia requesty
     $this->hodnoteniaScreen = $this->screenFactory->newHodnoteniaPriemeryScreen($trace, $this->adminStudia->getZapisnyListIdFromZapisnyListIndex($trace, $this->zapisnyList));
     $response->set('zoznamStudii', $this->zoznamStudii);
     $response->set('studium', $this->studium);
     $response->set('zapisneListy', $this->zapisneListy);
     $response->set('zapisnyList', $this->zapisnyList);
     parent::invokeAction($trace, $action, $context);
 }