Question

I’m using NHibernate first time and in this line it throws exception for me

var total = session
                    .QueryOver<Comment>().Where(p => p.Entry.Author == username)
                    .ToRowCountQuery()
                    .FutureValue<int>();

                var results = session
                    .QueryOver<Comment>().Where(p => p.Entry.Author == username)
                    .Fetch(x => x.Entry).Eager()
                    .OrderBy(x => x.Posted).Desc()
                    .Skip(skip)
                    .Take(take)
                    .List();

The Exception is

could not resolve property: Entry.Author of: FunnelWeb.Model.Comment

I guess, the problem is that Entry object doesn’t loaded here. How can I do that trick with Nhibernate?

Answer 1

QueryOver is just a strongly-typed wrapper for Criteria, and doesn’t allow implicit deep references.

You’d have to use:

session.QueryOver<Comment>()
       .JoinQueryOver(x => x.Entry)
       .Where(x => x.Author == username)

Or you can use Query<> instead (LINQ) which will work with the syntax you’ve tried.