ORM::delete PHP 메소드

    public function delete()
    {
        $query = array("DELETE FROM", $this->_quote_identifier($this->_table_name));
        $this->_add_id_column_conditions($query);
        return self::_execute(join(" ", $query), is_array($this->id(true)) ? array_values($this->id(true)) : array($this->id(true)), $this->_connection_name);
    }

 public function delete()
 {
     // delete friend from all your lists
     $this->remove('lists');
     if ($this->is_confirmed()) {
         // friend is friends with you
         // (as well as you being friends with friend)
         // get "you" as seen from your friend's friend list
         $friends_friend = $this->get_reverse_friend();
         // delete friend from your friend list
         // can't do this too soon or we'll loose IDs
         $ret = parent::delete();
         // delete you from friend's friend list
         // (which also deletes you from all friend's lists)
         // this has to be done after $this is deleted
         // othewise we'd get U.N.F.R.I.E.N.D.C.E.P.T.I.O.N.
         // That many dreams within dreams is too unstable!
         try {
             $friends_friend->delete();
         } catch (Kohana_Exception $e) {
             // you're not your friend's friend for some reason
         }
     } else {
         // delete friend from your friend list
         $ret = parent::delete();
     }
     return $ret;
 }