def getall(self):
        try:
            spec = {'data': {'$exists': 1}}
            fields = {'_id': 0}
            sort = [('tid', 1)]
            cur = self.db.docs.find(spec, fields, sort=sort)
        except Exception as e:
            raise DatabaseException(e)
        return [Document(**row) for row in cur]
def parsed_error_msg(self):
        """
        Sometimes, the error message we've received needs to be parsed into
        something more human readable

        The default behavior is to return the current error message as is.
        """
        return self.error_msg