I didn't understand that in all examples of IOC i could find, one interface can only have one implemented class in the dictionary of class mapping. Whatever DI or Service locator
It's a little bit stupid in my mind, no?
All the DI Containers I walk through in my book support multiple registrations of the same interface:
Castle Windsor
container.Register(Component
.For<IIngredient>()
.ImplementedBy<Steak>());
container.Register(Component
.For<IIngredient>()
.ImplementedBy<SauceBéarnaise>());
Autofac
builder.RegisterType<SauceBéarnaise>().As<IIngredient>();
builder.RegisterType<Steak>().As<IIngredient>();
Unity
container.RegisterType<IIngredient, Steak>();
container.RegisterType<IIngredient, SauceBéarnaise>("sauce");
There are more containers that support this; these are only examples. My book contains much more detailed examples.