public function createGatheringItems(GatheringDataSourceConfiguration $configuration)
 {
     $fp = Loader::helper('feed');
     $feed = $fp->load($configuration->getRssFeedURL(), false);
     $feed->init();
     $feed->handle_content_type();
     $posts = $feed->get_items(0);
     $gathering = $configuration->getGatheringObject();
     $lastupdated = 0;
     if ($gathering->getGatheringDateLastUpdated()) {
         $lastupdated = strtotime($gathering->getGatheringDateLastUpdated());
     }
     $items = array();
     foreach ($posts as $p) {
         $posttime = strtotime($p->get_date('Y-m-d H:i:s'));
         //if ($posttime > $lastupdated) {
         $item = RssFeedGatheringItem::add($configuration, $p);
         //}
         if (is_object($item)) {
             $items[] = $item;
         }
     }
     return $items;
 }