NHibernate IPreUpdateEventListener weird behaviour

Posted by mcaaltuntas on Stack Overflow See other posts from Stack Overflow or by mcaaltuntas
Published on 2010-04-29T21:33:23Z Indexed on 2010/04/30 8:47 UTC
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nhibernate

I am using NHibernate 2.0.1 and IPreUpdateEventListener,IPreInsertEventListener events for audit logging purposes.

I have a basic entity that has a one to many relation like this.

User------->Books

From an ASP.NET MVC controller method i am adding a book to a user like this.

Book book =new Book("LOTR");
var userBook=user.AddBook(book);

After session flushing OnPreInsert event called once for newly created Book object than OnPreUpdate called for all books objects in user's books collection even they have not changed.So I am updating LastMofiedDate property of all books objects and I dont want to do this. Is this supposed behaviour of NHibernate or am I missing something?

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