Question

I have two tables Boxer and Prospect. Boxers has general stuff like name and and dob etc and a BoxerId
While Prospect contains only one value (at the moment) which is a boxerId.
If a boxer is a prospect(up and coming boxer) there Id will be in the prospect table.

This works fine but now I want to select all boxers that are prospects

    public static IQueryable<Boxer> IsProspect(this IQueryable<Boxer> query)
    {
        //this does not filter down to only prospects!!!
        return query.Where(x => x.Prospect != null);
    }

This is the function I call using:

var repository = GetRepository<Boxer>();
var boxers = repository.Query().IsProspect();

I would hope this would filter my collection of all boxers down to just boxers that are prospects!

Oddly it doesnt filter it but if i hover over my boxers object and look at each boxer during debugging I can see “IsProspect” true or false correctly
IsProspect Debug Example http://img534.imageshack.us/img534/4361/isprospect.png

Answer 1

It sounds like you should use table-per-subclass inheritance.