How similiar are the implementations of hibernate and nhibernate?

Question

How similiar are the implementations of hibernate and nhibernate?

i.e. if I am comfortable with nhibernate, will hibernate be a very easy transition?

Answer 1

I've used Hibernate a lot and read up on NHibernate, and as far as the basics go, they appear very similar.

• Mapping files (.hbm.xml) are used in both Hibernate and NHibernate, and appear almost identical for simple configurations (except for XML namespaces).
• While NHibernate configuration isn't done in a hibernate.properties file like in Hibernate, the keys used are the same.
• The same basic interfaces are used between Hibernate and NHibernate, but they just have an 'I' at the beginning in .NET (SessionFactory vs. ISessionFactory).
• Most of the basic methods have the same name in NHibernate, but the .NET methods are capitalized unlike in Java (session.Save(user) vs. session.save(user)).