NHibernate IInterceptor implementation(without extending domain classes with special properties)

Question

How is possible to set some special column values when update/insert entities via NHibernate without extending domain classes with special properties?

for example: in my case i would like to get object and just moment before update/insert db add to that object some additional information (like user id or computer name) by using IInterceptor.In other words i would like to add few columns to DB Table with no specifying new properties in original object's class. Do i have to configure/change/add to my Object.hbm.xml or App.config in that case?

Thank you

Answer 1

You may want to look at this question...

http://stackoverflow.com/questions/97520/nhibernate-auditing-and-computed-column-values

Answer 2

Thank you for you answer.I looked into that before i submit my question,and the problem is that i can't change my original objects and base classes.So i have to figure out if possible to add information to DB table with no changing of original objects(even no inherit from any base classes)

Answer 3

There's quite a few ways of doing it, but I think you might this approach useful (even if it doesn't use IInterceptor at all)

http://colourcoding.net/Blog/archive/2008/07/23/denormalize-data-using-nhibernates-property-accessors.aspx