How do I Insert or Update (or overwrite) a record using NHibernate?

Question

I need to write a row to the database regardless of whether it already exists or not. Before using NHibernate this was done with a stored procedure. The procedure would attempt

Answer 1

You can do

Obj j = session.get(Object.class(), id);
if (j != null)
   session.merge(myObj);
else
   session.saveOrUpdate(myObj);