Ignore field when inserting with Fluent Nhibernate

In my MySql database i have a field which is a timestamp. MySQL is inserting the time when the row is created and updates the time when a row is updated.

How do I tell NH开发者_JAVA技巧ibernate don't to insert anything in that field when inserting and updating. I still want to be able to read the property.

With my current mapping:

Map(x => x.CreateDate).Column("CreateDate");

NHibernate tries to insert 0001-01-01 00:00:00, because the field is not nullable (And it should not be nullable)

I'm using Fluent Nhibernate.

I believe you should be able to add ReadOnly() to get that effect.

Map(x => x.CreateDate).Column("CreateDate").ReadOnly();

I guess you should specify that property is generated by database:

Map(x => x.CreateDate).Column("CreateDate").Generated.Always();