private static void Main(string[] args)
{
#region OpenClosePrinicple
var apple = new OpenClosedPrinciple.Product("Apple", OpenClosedPrinciple.Color.Green, OpenClosedPrinciple.Size.Small);
var tree = new OpenClosedPrinciple.Product("Tree", OpenClosedPrinciple.Color.Green, OpenClosedPrinciple.Size.Large);
var house = new OpenClosedPrinciple.Product("House", OpenClosedPrinciple.Color.Blue, OpenClosedPrinciple.Size.Large);
var products = new List <OpenClosedPrinciple.Product>()
{
apple, tree, house
};
var fp = new OpenClosedPrinciple.FilterProducts();
Console.WriteLine("Green products:");
var gp = fp.Filter(products, new OpenClosedPrinciple.Specification(OpenClosedPrinciple.Size.Large));
foreach (var p in gp)
{
Console.WriteLine($" - {p.Name} is Large");
}
var fps = new OpenClosedPrinciple.FilterProducts();
Console.WriteLine("Green products an large:");
var lp = new List <OpenClosedPrinciple.ISpecification <OpenClosedPrinciple.Product> > {
new OpenClosedPrinciple.Specification(OpenClosedPrinciple.Size.Large), new OpenClosedPrinciple.Specification(OpenClosedPrinciple.Color.Green)
};
var gps = fp.Filters(products, lp);
foreach (var p in gps)
{
Console.WriteLine($" - {p.Name} is green and large");
}
#endregion
}
// Open-Closed Principle Example
public static void OCP()
{
var apple = new OpenClosedPrinciple.Product("Apple", OpenClosedPrinciple.Color.Green, OpenClosedPrinciple.Size.Small);
var tree = new OpenClosedPrinciple.Product("Tree", OpenClosedPrinciple.Color.Green, OpenClosedPrinciple.Size.Large);
var house = new OpenClosedPrinciple.Product("House", OpenClosedPrinciple.Color.Blue, OpenClosedPrinciple.Size.Large);
OpenClosedPrinciple.Product[] products = { apple, tree, house };
var pf = new OpenClosedPrinciple.ProductFilter();
WriteLine("Green products (old): ");
foreach (var p in pf.FilterByColor(products, OpenClosedPrinciple.Color.Green))
{
WriteLine($" - {p.Name} is green");
}
// ^^ BEFORE
// vv AFTER
var bf = new OpenClosedPrinciple.BetterFilter();
WriteLine("Green products (new): ");
foreach (var p in bf.Filter(products, new OpenClosedPrinciple.ColorSpecification(OpenClosedPrinciple.Color.Green)))
{
WriteLine($" - {p.Name} is green");
}
WriteLine("Large blue items: ");
foreach (var p in bf.Filter(
products,
new OpenClosedPrinciple.AndSpecification <OpenClosedPrinciple.Product>(
new OpenClosedPrinciple.ColorSpecification(OpenClosedPrinciple.Color.Blue),
new OpenClosedPrinciple.SizeSpecification(OpenClosedPrinciple.Size.Large)
)))
{
WriteLine($" - {p.Name} is big and blue");
}
}
