facebook - get users that liked an url?

I have an iframe app on faceb开发者_如何学Pythonook.

There are several urls that users can like via like-button, eg. http://my-domain.com/item/12

Is there a way to get list of users (user ids) that likes the url?

Try it like this https://graph.facebook.com/search?q=http://my-domain.com/item/12&type=post&access_token=2227470867|2.PSGMtGYmflms8mb7zHtQsw__.3600.1304683200.0-531926632|rgg22I5Oj4as27JDMsPh9marq5U

It searches all public posts