Custom Authorization Provider with database

We have an ADF application running on weblogic server for which the authentication mechanism is being handled through weblogic security SAMLAuthenticator. Now we have come up with an UI through which user can make changes to the authorization policy of any User Id and the corresponding changes we will sync with the user_groups, user_group_members tables in our local data base.

We need to create a custom Authorization provider which will point to these tables for authorization. Need help on how to create and deploy this custom authorizer. Sample code is appreciated.

Thanks in advance for your help