Use WCF Autofac Container in another project level in n-tier architecture

Question

How can WCF Autofac Container (IContainer) can use in non WCF project classes?

Adding Autofac to Service project (on sample below) is the only solution or is there any other elegant way to achieve this.

Passing services as parameter in not feasible

Any help would be appreciated.

Wcf Service Project (Uses Autofac WCF)

public class DiscountWCFService
{
    public IDiscountService service {get; set;}
}

Service Project

public class DiscountService : IDiscountService 
{
    public IDiscountRepository repository {get; set;}
}


public static class DiscountExtension
{
    public static IDiscountProcessor GetProcessor(this Discount discount)
    {
         if(discount.Type=1) return TypeAProcessor();
         if(discount.Type=2) return TypeBProcessor();

         return null;
    }
}

public class TypeAProcessor : IDiscountProcessor 
{
   // Is it possible to use Autofac? 
   // E.G. IService fooService = AutofacContainer.Resolve<IFooService>
}

public class TypeBProcessor : IDiscountProcessor 
{
}

Entity Project

public class Discount
{
} 

Answer 1

Using keyed registration in Autofac saved my day.

Sample solution for my case is

builder.RegisterType<TypeAProcessor>().As<IDiscountProcessor>().Keyed<IDataService>(Type.One);

builder.RegisterType<TypeBProcessor>().As<IDiscountProcessor>().Keyed<IDataService>(Type.Two);    

builder.Register<Func<Discount, IDiscountProcessor>>(c =>
{
    var componentContext = c.Resolve<IComponentContext>();
    return (discount) =>
    {
      var processor = componentContext.ResolveKeyed<IDiscountProcessor>(discount.Type);
      return dataService;
    };
});