Question

I don’t know how to save object with where clause. I need it to prevent saving object with range of dates overlapping on others.

public class TaskEvent
{
    public DateTime StartDate {get;set;}
    public DateTime EndDate {get;set;}
}

I want to check overlaping in criteria within saving operation but I don’t know how.

Any ideas?

Answer 1

You can use HQL for ad hoc update queries

session.CreateQuery("UPDATE TaskEvent SET ... WHERE ID = :ID and ...")
.SetInt32("ID", ID)
//.SetDateTime("", )
//.SetDateTime("", )
.ExecuteUpdate();

or to do in a more NHibernate kind of way…fetch the required TaskEvents(where clause), update their properties, and commit the transaction.