NHibernate 2.* mapping files: how to define nullable DateTime type (DateTime?)?

Question

I know one of the breaking changes with NHibernate 2.* is that the NHibernate.Nullables are no longer supported. Therefore, what do you use in your mapping file to map the n

Answer 1

<property name="CreatedDate" />

• NHibernate will reflect over the class in question and discover that the property's reflected type is DateTime? all on its own.
• NHibernate will assume the column name is by default the same as the property name, unless you tell it otherwise.
• NHibernate will assume that any property is nullable (not-null="false") unless you tell it otherwise.

If you really want, it should be something like ...

<property name="CreatedDate" type="System.Nullable`1[[System.DateTime, mscorlib]], mscorlib" />