protected function hookTransformColumnValue($tableName, $colName, $colValue, $row)
    {
        if (!$this->transformColumnValueCallable) {
            return $colValue;
        }

        return call_user_func_array($this->transformColumnValueCallable, array(
            $tableName,
            $colName,
            $colValue,
            $row
        ));
    }