/**
  * Finnish saving renderer to database by creating colunms
  * 
  * @param Tracker_Report_Renderer $renderer containing the columns
  */
 public function afterSaveObject($renderer)
 {
     $renderer->injectUnsavedColumnsInRendererDB($this);
     $this->saveAggregates($renderer->getAggregates());
     $this->saveSort($renderer->getSort());
 }