Chapter 26: Best Practices, error about identifier recommendations

[janv8000]

Chapter 26 mentions the following:

Declare identifier properties on persistent classes.

NHibernate makes identifier properties optional. There are all sorts of reasons why you should use them. We recommend that identifiers be 'synthetic' (generated, with no business meaning) and of a non-primitive type. For maximum flexibility, use Int64 or String.

Aren't Int64 and String etc... primitive types (or in the case of String to be considered primitive)?

[fredericDelaporte]

That is non-primitive which should be primitive, I think this non- is a mistake.