Why do we need this if we got JAAS?

There is a lot of frameworks dealing with security, authentification and access control out there. But unfortunately most of those frameworks do not offer any comfort when it comes to magane user data. And somehow there is a need to register users, store abitrary profiles for them ( changing over time ) , manage their rights... Well, this framework does right this - store and retrieve data about your users and their permissions. In relational database. With simple schema. With hibernate.