/**
  * export released
  *
  * @access protected
  * @return
  */
 protected function exportReleased()
 {
     global $ilObjDataCache;
     include_once './Services/WebServices/ECS/classes/class.ilECSExport.php';
     $exported = ilECSExport::getExportedIds();
     $ilObjDataCache->preloadObjectCache($exported);
     include_once 'Services/Utilities/classes/class.ilCSVWriter.php';
     $writer = new ilCSVWriter();
     $writer->addColumn($this->lng->txt('title'));
     $writer->addColumn($this->lng->txt('description'));
     $writer->addColumn($this->lng->txt('ecs_field_courseID'));
     $writer->addColumn($this->lng->txt('ecs_field_term'));
     $writer->addColumn($this->lng->txt('ecs_field_lecturer'));
     $writer->addColumn($this->lng->txt('ecs_field_courseType'));
     $writer->addColumn($this->lng->txt('ecs_field_semester_hours'));
     $writer->addColumn($this->lng->txt('ecs_field_credits'));
     $writer->addColumn($this->lng->txt('ecs_field_room'));
     $writer->addColumn($this->lng->txt('ecs_field_cycle'));
     $writer->addColumn($this->lng->txt('ecs_field_begin'));
     $writer->addColumn($this->lng->txt('ecs_field_end'));
     $writer->addColumn($this->lng->txt('last_update'));
     include_once './Services/WebServices/ECS/classes/class.ilECSDataMappingSettings.php';
     $settings = ilECSDataMappingSettings::_getInstance();
     foreach ($exported as $obj_id) {
         include_once './Services/AdvancedMetaData/classes/class.ilAdvancedMDValues.php';
         $values = ilAdvancedMDValues::_getValuesByObjId($obj_id);
         $writer->addRow();
         $writer->addColumn(ilObject::_lookupTitle($obj_id));
         $writer->addColumn(ilObject::_lookupDescription($obj_id));
         $field = $settings->getMappingByECSName('courseID');
         $writer->addColumn(isset($values[$field]) ? $values[$field] : '');
         $field = $settings->getMappingByECSName('term');
         $writer->addColumn(isset($values[$field]) ? $values[$field] : '');
         $field = $settings->getMappingByECSName('lecturer');
         $writer->addColumn(isset($values[$field]) ? $values[$field] : '');
         $field = $settings->getMappingByECSName('courseType');
         $writer->addColumn(isset($values[$field]) ? $values[$field] : '');
         $field = $settings->getMappingByECSName('semester_hours');
         $writer->addColumn(isset($values[$field]) ? $values[$field] : '');
         $field = $settings->getMappingByECSName('credits');
         $writer->addColumn(isset($values[$field]) ? $values[$field] : '');
         $field = $settings->getMappingByECSName('room');
         $writer->addColumn(isset($values[$field]) ? $values[$field] : '');
         $field = $settings->getMappingByECSName('cycle');
         $writer->addColumn(isset($values[$field]) ? $values[$field] : '');
         $field = $settings->getMappingByECSName('begin');
         $writer->addColumn(isset($values[$field]) ? ilFormat::formatUnixTime($values[$field], true) : '');
         $field = $settings->getMappingByECSName('end');
         $writer->addColumn(isset($values[$field]) ? ilFormat::formatUnixTime($values[$field], true) : '');
         $writer->addColumn($ilObjDataCache->lookupLastUpdate($obj_id));
     }
     ilUtil::deliverData($writer->getCSVString(), date("Y_m_d") . "_ecs_export.csv", "text/csv");
 }
 /**
  * handle delete
  * Objects that are moved to the trash call ECS-Remove
  * 
  * @see ilRepUtil	 
  * @param array $a_subbtree_nodes
  */
 public static function _handleDelete(array $a_subbtree_nodes)
 {
     // active?
     include_once './Services/WebServices/ECS/classes/class.ilECSServerSettings.php';
     if (!ilECSServerSettings::getInstance()->activeServerExists()) {
         return;
     }
     include_once './Services/WebServices/ECS/classes/class.ilECSSetting.php';
     include_once './Services/WebServices/ECS/classes/class.ilECSExport.php';
     $exported = ilECSExport::getExportedIds();
     foreach ($a_subbtree_nodes as $node) {
         if (in_array($node['obj_id'], $exported)) {
             if ($content_obj = ilObjectFactory::getInstanceByRefId($node['child'], false)) {
                 $settings = self::getInstanceByObject($content_obj);
                 // Read export server ids
                 foreach (ilECSExport::getExportServerIds($node['obj_id']) as $sid) {
                     $server = ilECSSetting::getInstanceByServerId($sid);
                     $export_settings = new ilECSExport($sid, $content_obj->getId());
                     $settings->doDelete($server, $export_settings);
                 }
             }
         }
     }
 }