def insertRuleset(self, ruleset, domain):
		'''增加一个robots.txt规则集'''
		cur = self.conn.cursor()
		cur.execute("SELECT did FROM Domains WHERE domain=?", (domain,))
		did = cur.fetchone()[0]
		cur.execute("INSERT INTO Rulesets VALUES (NULL,?,?)",(did, ruleset))
		# 写入到文件
		self.conn.commit()
def paged_search(self, **kwargs):
                self.connection.search(search_base=kwargs.get("search_base"),
                                       search_scope=kwargs.get("search_scope"),
                                       search_filter=kwargs.get(
                                           "search_filter"),
                                       attributes=kwargs.get("attributes"),
                                       paged_size=kwargs.get("page_size"),
                                       size_limit=kwargs.get("size_limit"),
                                       paged_cookie=None)
                result = self.connection.response
                if kwargs.get("generator", False):
                    # If ``generator=True`` is passed, ``paged_search`` should return an iterator.
                    result = iter(result)
                return result