Factory Pattern but with object Parameters

Question

Take the following classic factory pattern:

public interface IPizza
{
    decimal Price { get; }
}

public class HamAndMushroomPizza : IPizza
{
    decimal IP         


        

Answer 1

You would have to add another CreatePizza() method for that factory class. And that would mean that users of the factory wouldn't be able to create those types of pizzas unless they were specifically using an instance of the HamAndMushroomPizzaFactory class. If they simply have a PizzaFactory reference, they can only call the parameterless version and won't be able to create ham and mushroom pizzas generically.