/**
  * update whitelist
  *
  * @access protected
  * 
  */
 protected function updateCommunities()
 {
     global $ilLog;
     include_once './Services/WebServices/ECS/classes/class.ilECSCommunityReader.php';
     include_once './Services/WebServices/ECS/classes/class.ilECSServerSettings.php';
     // @TODO: Delete deprecated communities
     $invalidImportTypes = false;
     if (!$this->validateImportTypes($_POST['import_type'])) {
         $invalidImportTypes = true;
     }
     $servers = ilECSServerSettings::getInstance();
     foreach ($servers->getServers() as $server) {
         try {
             // Read communities
             $cReader = ilECSCommunityReader::getInstanceByServerId($server->getServerId());
             // Update community cache
             foreach ($cReader->getCommunities() as $community) {
                 include_once './Services/WebServices/ECS/classes/class.ilECSCommunityCache.php';
                 $cCache = ilECSCommunityCache::getInstance($server->getServerId(), $community->getId());
                 $cCache->setCommunityName($community->getTitle());
                 $cCache->setMids($community->getMids());
                 $cCache->setOwnId($community->getOwnId());
                 $cCache->update();
             }
         } catch (Exception $e) {
             $GLOBALS['ilLog']->write(__METHOD__ . ': Cannot read ecs communities: ' . $e->getMessage());
         }
     }
     include_once './Services/WebServices/ECS/classes/class.ilECSParticipantSetting.php';
     foreach ((array) $_POST['sci_mid'] as $sid => $tmp) {
         foreach ((array) $_POST['sci_mid'][$sid] as $mid => $tmp) {
             $set = new ilECSParticipantSetting($sid, $mid);
             $set->enableExport(array_key_exists($mid, (array) $_POST['export'][$sid]) ? true : false);
             $set->enableImport(array_key_exists($mid, (array) $_POST['import'][$sid]) ? true : false);
             $set->setImportType($_POST['import_type'][$sid][$mid]);
             // update title/cname
             try {
                 $part = ilECSCommunityReader::getInstanceByServerId($sid)->getParticipantByMID($mid);
                 if ($part instanceof ilECSParticipant) {
                     $set->setTitle($part->getParticipantName());
                 }
                 $com = ilECSCommunityReader::getInstanceByServerId($sid)->getCommunityByMID($mid);
                 if ($com instanceof ilECSCommunity) {
                     $set->setCommunityName($com->getTitle());
                 }
             } catch (Exception $e) {
                 $GLOBALS['ilLog']->write(__METHOD__ . ': Cannot read ecs communities: ' . $e->getMessage());
             }
             $set->update();
         }
     }
     if ($invalidImportTypes) {
         ilUtil::sendFailure($this->lng->txt('ecs_invalid_import_type_cms'), true);
     } else {
         ilUtil::sendSuccess($this->lng->txt('settings_saved'), true);
     }
     $GLOBALS['ilCtrl']->redirect($this, 'communities');
     // TODO: Do update of remote courses and ...
     return true;
 }