Breaking changes with NHibernate 4 upgrade

Question

I can see what\'s new and fixed in NHibernate 4.0

I would like to know if anyone has had issue with hbm mappings upgrading from NHibernate 3 to 4?

I fear tha

Answer 1

I wouldn't worry too much about the hbm itself. FluentNHibernate "compiles" to XML which goes through the mapping layer. NHibernate's own mapping-by-code also uses parts of the same code as hbm files.

Anyway, the mapping code hasn't changed very much. Any regressions are more likely to be in other parts.