In case you were wondering how far along i am developing Noma, the answer is: not far at all. I really need to spend more time on this. Anyway, so far all i have is a way to retrieve the database meta data from SQL Server and store it in a database-independent and easy to use object model.
Right now i'm working on parsing the nhibernate mapping files and putting the data in an easy to use object model. For a while, i figured i'd just use the nhibernate code that parses the mapping files but i wasn't very comfortable with that code, and the nhibernate team are in fact doing some heavy refactoring in that area of their codebase. So i decided to just parse it all myself... that code is pretty boring and tedious to write, but in the end i will have an easy to use object model representing the nhibernate mappings.
My goal is basically to make writing noma rules incredibly easy based on these object models (one for nhibernate mapping date, one for database metadata, and one for .NET class data). But i have no idea when i'll actually have something that works, let alone something usable. And no, i'm not making any promises as to when i'll have something i can release. But if you are interested, you can always keep an eye on the subversion repository 