Question

I’ve got a pretty complex object graph that I want to load in one fell
swoop.

Samples have Daylogs which have Daylog Tests which have Daylog
Results

Daylog Tests have Testkeys, Daylog Results have Resultkeys, and
TestKeys have Resultkeys.

I’m using the QueryOver API and Future to run these all as one query,
and all the data that NHibernate should need to instantiate the entire
graph IS being returned, verfied by NHProf.

                public static IList<Daylog> DatablockLoad(Isession sess,
ICollection<int> ids)
                {
                        var daylogQuery = sess.QueryOver<Daylog>()
                                .WhereRestrictionOn(dl => dl.DaylogID).IsIn(ids.ToArray())
                                .Fetch(dl => dl.Tests).Eager
                                .TransformUsing(Transformers.DistinctRootEntity)
                                .Future<Daylog>();

                        sess.QueryOver<DaylogTest>()
                                .WhereRestrictionOn(dlt =>
dlt.Daylog.DaylogID).IsIn(ids.ToArray())
                                .Fetch(dlt => dlt.Results).Eager
                                .Inner.JoinQueryOver<TestKey>(dlt => dlt.TestKey)
                                .Fetch(dlt => dlt.TestKey).Eager
                                .Inner.JoinQueryOver<ResultKey>(tk => tk.Results)
                                .Fetch(dlt => dlt.TestKey.Results).Eager
                                .Future<DaylogTest>();

                        sess.QueryOver<DaylogResult>()
                                .Inner.JoinQueryOver(dlr => dlr.DaylogTest)
                                .WhereRestrictionOn(dlt =>
dlt.Daylog.DaylogID).IsIn(ids.ToArray())
                                .Fetch(dlr => dlr.ResultKey).Eager
                                .Fetch(dlr => dlr.History).Eager
                                .Future<DaylogResult>();

                        var daylogs = daylogQuery.ToList();

                        return daylogs;
                }

However, I still end up with proxies to represent the relationship
between Testkey and ResultKey, even though I’m specifically loading
that relationship.

I think this entire query is probably representative of a poor
understanding of the QueryOver API, so I would like any and all advice
on it, but primarily, I’d like to understand why I get a proxy and not
a list of results when later I try to get
daylogresult.resultkey.testkey.results.

Any help?

Answer 1

The answer was to call NHibernateUtil.Initialize on the various objects. Simply pulling the data down does not mean that NHibernate will hydrate all the proxies.