self._assert_db_is_initialized()
msg_p = Database._find_message_by_filename(self._db, _str(filename))
return msg_p and Message(msg_p, self) or None
self._assert_db_is_initialized()
msg_p = Database._find_message_by_filename(self._db, _str(filename))
return msg_p and Message(msg_p, self) or None