/**
  * converts Tinebase_Record_RecordSet to external format
  * 
  * @param Tinebase_Record_RecordSet         $_records
  * @param Tinebase_Model_Filter_FilterGroup $_filter
  * @param Tinebase_Model_Pagination         $_pagination
  *
  * @return mixed
  */
 public function fromTine20RecordSet(Tinebase_Record_RecordSet $_records = NULL, $_filter = NULL, $_pagination = NULL)
 {
     if (count($_records) == 0) {
         return array();
     }
     Tinebase_Notes::getInstance()->getMultipleNotesOfRecords($_records);
     Tinebase_Tags::getInstance()->getMultipleTagsOfRecords($_records);
     if (Tinebase_Core::isFilesystemAvailable()) {
         Tinebase_FileSystem_RecordAttachments::getInstance()->getMultipleAttachmentsOfRecords($_records);
     }
     Calendar_Model_Attender::resolveAttendee($_records->attendee, TRUE, $_records);
     Calendar_Convert_Event_Json::resolveRrule($_records);
     Calendar_Controller_Event::getInstance()->getAlarms($_records);
     Calendar_Convert_Event_Json::resolveGrantsOfExternalOrganizers($_records);
     Calendar_Model_Rrule::mergeAndRemoveNonMatchingRecurrences($_records, $_filter);
     $_records->sortByPagination($_pagination);
     Tinebase_Frontend_Json_Abstract::resolveContainersAndTags($_records, array('container_id'));
     $_records->setTimezone(Tinebase_Core::getUserTimezone());
     $_records->convertDates = true;
     $eventsData = $_records->toArray();
     foreach ($eventsData as $idx => $eventData) {
         if (!(isset($eventData[Tinebase_Model_Grants::GRANT_READ]) || array_key_exists(Tinebase_Model_Grants::GRANT_READ, $eventData)) || !$eventData[Tinebase_Model_Grants::GRANT_READ]) {
             $eventsData[$idx] = array_intersect_key($eventsData[$idx], array_flip(array('id', 'dtstart', 'dtend', 'transp', 'is_all_day_event')));
         }
     }
     return $eventsData;
 }
 /**
  * resolves child records before converting the record set to an array
  * 
  * @param Tinebase_Record_RecordSet $records
  * @param Tinebase_ModelConfiguration $modelConfiguration
  * @param boolean $multiple
  */
 protected function _resolveBeforeToArray($records, $modelConfiguration, $multiple = false)
 {
     Tinebase_Frontend_Json_Abstract::resolveContainersAndTags($records);
     self::resolveAttachmentImage($records);
     self::resolveMultipleIdFields($records);
     // use modern record resolving, if the model was configured using Tinebase_ModelConfiguration
     // at first, resolve all single record fields
     if ($modelConfiguration) {
         $this->_resolveSingleRecordFields($records, $modelConfiguration);
         // resolve all multiple records fields
         $this->_resolveMultipleRecordFields($records, $modelConfiguration, $multiple);
     }
 }