/**
  * @inheritDoc
  */
 public function getAll()
 {
     if (!$this->cxns) {
         $this->cxns = array();
         $dao = new CRM_Cxn_DAO_Cxn();
         $dao->find();
         while ($dao->fetch()) {
             $cxn = $this->convertDaoToCxn($dao);
             $this->cxns[$cxn['cxnId']] = $cxn;
         }
     }
     return $this->cxns;
 }