How do I automap a component collection in Fluent NHibernate?

Question

I have a TrackLog that contains a collection of GPS points as a TrackPoint object:

public class TrackPoint
{
    public virtual int Id { get; set; }
    public virtual List<TrackPoint> TrackPoints { get;set; }
}

public class TrackLog
{
    public virtual double Latitude { get; set; }
    public virtual double Longitude { get; set; }
    public virtual DateTime Timestamp { get; set; }
}

TrackPoint is a component and I've created an IAutomappingConfiguration that tells FNH to map it as such. However, when I try to run my program, FNH spits out the following exception:

Association references unmapped class: TestProject.Components.TrackPoint

How do I map a collection of components?

Answer 1

I figured out my problem. Rafael, in response to your question, TrackLog has a collection of TrackPoints. Normally in this case, TrackPoint would be an entity, but because a TrackPoint should not exist if it doesn't belong in a TrackLog, I decided to make it a component, which ties its lifetime to its parent TrackLog.

It turns out the problem I was having was that, even though I created an automapping override, it wasn't working:

internal class TrackLogOverride : IAutoMappingOverride<TrackLog>
{
    public void Override(AutoMapping<TrackLog> mapping)
    {
        mapping.HasMany(x => x.TrackPoints).Component(x =>
            {
                x.Map(m => m.Latitude);
                x.Map(m => m.Longitude);
                x.Map(m => m.Timestamp);
            });
    }
}

Turns out that I needed to make the override class public for FNH to use them because I was using FNH in another assembly.