def delete(self, doc):
        if doc.id is None:
            raise DatabaseException('Document does not have id')
        if doc.sid is None:
            try:
                rs = self.db.docs.remove({'id': doc.id}, safe=True)
                assert rs['n'] == 1
            except Exception as e:
                raise DatabaseException(e)
            return None
        doc.data = None
        return self.update(doc)
def unbound_on_Connection(server, user,
                                  password,
                                  auto_bind,
                                  client_strategy,
                                  authentication,
                                  check_names,
                                  auto_referrals, *a, **kwargs):
            return self._on_Connection(server, user,
                                       password,
                                       auto_bind,
                                       client_strategy,
                                       authentication,
                                       check_names,
                                       auto_referrals, *a,
                                       **kwargs)