Update Top n using NHibernate

Question

How can I make NHibernate produce this t-sql request ?

Update top (n) Tasks set MODIFICATIONS where CONDITION

I don\'t want to do a Transaction + batch update.<

Answer 1

Please, check this:

• 13.3. DML-style operations

a cited code snippet:

ISession session = sessionFactory.OpenSession();
ITransaction tx = session.BeginTransaction();
string hqlVersionedUpdate = "update versioned Customer set name = :newName where name = :oldName";
int updatedEntities = s.CreateQuery( hqlUpdate )
        .SetString( "newName", newName )
        .SetString( "oldName", oldName )
        .ExecuteUpdate();
tx.Commit();
session.Close();

So, this way, we can defin UPDATE with HQL (using our domain model) and executing the udpate directly at once on DB side

NOTE: for more details also check this blog post: NHibernate – Executable DML by Ayende