NHibernate: inserting additional calculated column

Posted by Andrey Shchekin on Stack Overflow See other posts from Stack Overflow or by Andrey Shchekin
Published on 2010-05-12T07:01:50Z Indexed on 2010/05/12 7:04 UTC
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What would be your approach with NHibernate to do the following:
When Comment is inserted into DB, and its property Text is inserted into column Text (due to a mapping), insert into column TextHash a hash of this property value.

It seems trivial if I map TextHash, but how should I do this without mapping it?
I do not need it in the domain model, its a DB-level optimization (I would use computed HashBytes if not for the length limit).

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NHibernate: inserting additional calculated column

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