Ok so I've managed to work this out finally for anyone that's interested:
Entities
public class Feed
{
public virtual int Id { get; set; }
public virtual string Description { get; set; }
public virtual FeedSource FeedSource { get; set; }
public virtual string URL { get; set; }
public virtual FeedList FeedList { get; set; }
}
public class FeedList
{
public virtual int Id{get;set;}
public virtual string Name { get; set; }
public virtual IList<Feed> Feeds { get; set; }
}
public class FeedSource
{
public virtual int Id { get; set; }
public virtual string Name { get; set; }
}
Overrides
public class FeedOverride : IAutoMappingOverride<Feed>
{
public void Override(AutoMapping<Feed> mapping)
{
mapping.References<FeedList>(map => map.FeedList).Cascade.All();
mapping.References<FeedSource>(map => map.FeedSource).Cascade.All();
}
}
public class FeedListOverride : IAutoMappingOverride<FeedList>
{
public void Override(AutoMapping<FeedList> mapping)
{
mapping.HasManyToMany<Feed>(map => map.Feeds).Cascade.All().Table("FeedList_Feed");
//mapping.HasMany<FeedListFeed>(map => map.Feeds).Cascade.All();
}
}
And finally:
The Query
session.QueryOver<FeedList>()
.Inner.JoinAlias(f => f.Feeds, () => feedAlias)
.Where(fl => fl.Name == name)
.Select(x => feedAlias.FeedSource)
.List<FeedSource>().Distinct().ToList();