Linq/EF, Eager loading and GROUP BY issues

Question

I\'m having issues with GROUP BY and eager loading. I try to explain what im doing. I\'m querying a datacontext ctx for events

The event class has the following pr

Answer 1

Thnx for the quick answer. You pointed me in the right direction. Here is the solution i came up with:

using MyFunc = Func<ExtendedCoreContext, Guid, IQueryable<DataNotificationEvent>>;

private static readonly MyFunc GetMentionsNewCompiledQuery = 

    CompiledQuery.Compile<ExtendedCoreContext, Guid, IQueryable<DataNotificationEvent>>(

        (ctx, personId) => ((ObjectQuery<DataNotificationEvent>)(
            from x in (
                from e in ctx.Events.OfType<DataNotificationEvent>()
                group e by e.SubjectId
                into g
                select g.OrderByDescending(p => p.Created).FirstOrDefault()
            )
            orderby x.Created descending
            where x.Targets.Any(t => t.Id == personId)
            select x
        ))
          .Include(EntityProperties.Event.TriggeredBy)
          .Include(EntityProperties.DataNotificationEvent.Targets)

    );

Answer 2

You're projecting onto an anonymous type, so Include() isn't going to work like that. Because what you've done with the group and projecting into the anonymous type is to change the shape of the query. That tosses out the eager loading. Reading this article might help.