使用NHibernate与WCF时要注意什么?

I am just a simple beginner with both NHibernate and WCF. I would like to use NHibernate as my ORM in the class library where my repositories are. I also need to use WCF to expose my business logic, and behind that my repositories, to the rest of the company.I am just a simple beginner with both NHibernat