private static void Main(string[] args)
{
var apple = new Product("Apple", Colour.Green, Size.Small);
var tree = new Product("Tree", Colour.Green, Size.Large);
var house = new Product("House", Colour.Blue, Size.Large);
Product[] products = { apple, tree, house };
var productFilter = new ProductFilter();
System.Console.WriteLine("Green products (old):");
foreach (var product in productFilter.FilterByColour(products, Colour.Green))
{
System.Console.WriteLine($" - {product.Name} is {product.Colour}");
}
var betterFilter = new BetterFilter();
System.Console.WriteLine("GreenProducts (new)");
foreach (var item in betterFilter.Filter(products, new CololourSpecification(Colour.Green)))
{
System.Console.WriteLine($" - {item.Name} is {item.Colour}");
}
System.Console.WriteLine("For large blue items");
foreach (var item in betterFilter.Filter(products, new AndSpecification <Product>(new CololourSpecification(Colour.Blue), new SizeSpecification(Size.Large))))
{
System.Console.WriteLine($" - {item.Name} is {item.Colour}");
}
System.Console.ReadLine();
}