Say I create a number of DAL methods and each of those methods calls the Save method in NHibernate for a particular domain object. I want to have a master method that calls all those methods in a single transaction boundary.

Is there a way to do this in NHibernate?

I was thinking about using COM+ services. Does NHibernate support COM+ services?

Thanks!

Yuo can begin and commit tnx in the "Master Method", all the saves will be then in this one tnx.

NHibernate internally uses ADO.NET Connection so you can use NH in COM+ as well.