Question

I’m using EF along with mvc, for that I’ve a generic repository, unitOfWork implementation based on ObjectContext, no problem with CRUD so far. I’m just wondering how can/should I handle scenarios where I need to do the join with entities.

Answer 1

There are couple of ways to handle the situation. Joins are not necessary in most situations and generally avoided in EF.

var orders = orderRepository.GetAll();

var projection = orders.Where(o => o.Customer.Name == "Foo")
        .Select(o => new { o, o.Customer });

Generic Repository is a leaky abstraction. Implement specific repository for each entity and create method that does the join and return the result.