Auditing with NHibernate

Provide some good example about how implements Auditing in NHibernate, perhaps, is one of the most difficult thing to do. There are a lot of way to implements the Auditing and, in general, ours examples are oriented to the less useful and the most intrusive; the IAuditable.

public interface IAuditable
{
   DateTime CreatedAt { get; }
   string CreatedBy { get; }
   DateTime UpdatedAt { get; }
   string UpdatedBy { get; }
}

The implementation of this kind of thing can’t be called “Auditing” because:

• You can’t know which was the change of an update.
• It is invasive; any entity is auditable and the Auditing, in general, is outside the scope of a domain-entity.
• You lost any information after a delete.

For real our examples are not oriented to show you how implement the auditing but only to show you a possible usage of listeners/interceptor.

I’m working in some others implementations in uNhAddIns. My intention is implements from AuditLog to something closer to ParallelModel.

The real challenge is a no intrusive and dynamic implementation of ParallelModel with EventSourcing, perhaps with a “sponsor” it would be faster.

Stay tuned.