protected function resolveValue($field)
    {
        $cur = &$this->_record;
        if (array_key_exists($field, $cur)) {
            $cur = &$cur[$field];
        } else {
            return null;
        }
        return $cur;
    }
protected function resolveValue($field)
    {
        $cur = &$this->_record;
        if (array_key_exists($field, $cur)) {
            $cur = &$cur[$field];
        } else {
            return null;
        }
        return $cur;
    }
protected function resolveValue ( $ field ) { $ cur = & $ this -> _record ; if ( array_key_exists ( $ field , $ cur ) ) { $ cur = & $ cur [ $ field ] ; } else { return null ; } return $ cur ; }
protected instance methods
protected instance methods