How to get all facebook app request for a user of my apps without storing them

We are building a apps and we want to clear all the apps request for our user when he log into our apps.

I know we could store the request when we send them and clear them when the user log to the apps. But is there anyway to get all the apps request from FB (through fb api or fql) 开发者_如何学Goinstead of storing them in our apps.