private function createReaction($id)
 {
     $key = "ReactionObject-{$id}";
     if ($this->cacheMgr->isCached($key)) {
         return $this->cacheMgr->load($key);
     } else {
         $object = new Reaction($id);
         $this->cacheMgr->save($key, $object, 3600);
         return $object;
     }
 }
 /**
  * Returns all columns of all rows from the systems table as an associative array keyed by systemID.
  * @param	none
  * @return	array
  */
 public function getAllSystems()
 {
     $key = __METHOD__ . "(" . implode(",", func_get_args()) . ")";
     if ($this->cacheMgr->isCached($key)) {
         $systems = $this->cacheMgr->load($key);
     } else {
         $sql = "SELECT systemID, systemName FROM {$this->dbPrefix}systems ORDER BY systemID ASC;";
         $query = $this->pdo->prepare($sql);
         $query->execute();
         if ($systems = $query->fetchAll(PDO::FETCH_KEY_PAIR)) {
             if (count($systems) > 0) {
                 $this->cacheMgr->save($key, $systems, 86400);
             }
         }
         $query->closeCursor();
         $query = null;
     }
     return $systems;
 }