public static SingleObject Instance()
{
if (instance == null)
{
instance = new SingleObject();
}
return(instance);
}
static void Main(string[] args)
{
Console.WriteLine("Singleton Pattern");
// Singleton Pattern
SingleObject singleObject = SingleObject.Instance();
singleObject.ShowMessage();
Console.WriteLine("\nBuilder Pattern");
// Builder Pattern
MealBuilder mealBuilder = new MealBuilder();
Meal vegMeal = mealBuilder.PrepareVegMeal();
Console.WriteLine("Veg Meal");
vegMeal.ShowItems();
Console.WriteLine("Total Cost : " + vegMeal.GetCost());
Meal nonVegMeal = mealBuilder.PrepareNonVegMeal();
Console.WriteLine("NonVeg Meal");
nonVegMeal.ShowItems();
Console.WriteLine("Total Cost : " + nonVegMeal.GetCost());
Console.WriteLine("\nAbstract Factory");
// Abstract Factory Pattern
AbstractFactory shapeFactory = FactoryProducer.GetFactory("shape");
IShape circleShape = shapeFactory.GetShape("circle");
circleShape.Draw();
AbstractFactory colorFactory = FactoryProducer.GetFactory("color");
IColor blueColor = colorFactory.GetColor("blue");
blueColor.Fill();
Console.WriteLine("\nAdapter");
//Adapter Pattern
AudioPlayer audioPlayer = new AudioPlayer();
audioPlayer.Play("mp4");
audioPlayer.Play("flac");
audioPlayer.Play("vlc");
Console.WriteLine("\nFacade");
//Facade Pattern
ShapeMaker shapeMaker = new ShapeMaker();
shapeMaker.DrawCircle();
shapeMaker.DrawRectangle();
shapeMaker.DrawSquare();
Console.WriteLine("\nDecorator doesn't work");
//Decorator Pattern
IDecoratorShape rectangle = new RectangleDecorator();
IDecoratorShape redRectangle = new RedShapeDecorator(new RectangleDecorator());
Console.WriteLine("Rectangle with no color");
rectangle.Draw();
Console.WriteLine("Rectangle with color");
redRectangle.Draw();
Console.WriteLine("\nComposite");
//Composite Pattern
Employee DSI = new Employee("employee1", "DSI", 100000);
Employee chefDeProjet1 = new Employee("employee2", "Chef de projet", 60000);
Employee chefDeProjet2 = new Employee("employee3", "Chef de projet", 60000);
Employee dev1 = new Employee("employee4", "Développeur", 40000);
Employee dev2 = new Employee("employee5", "Développeur", 40000);
DSI.Add(chefDeProjet1);
DSI.Add(chefDeProjet2);
chefDeProjet1.Add(dev1);
chefDeProjet2.Add(dev2);
Console.WriteLine(DSI.Details());
foreach (Employee e1 in DSI.GetSubordinates())
{
Console.WriteLine(e1.Details());
foreach (Employee e2 in e1.GetSubordinates())
{
Console.WriteLine(e2.Details());
}
}
Console.WriteLine("\nBridge");
//Bridge Pattern
BridgeShape shape1 = new BridgeCircle(10, 10, 1, new GreenCircle());
BridgeShape shape2 = new BridgeCircle(100, 100, 10, new RedCircle());
shape1.Draw();
shape2.Draw();
Console.WriteLine("\nCommand");
//Command Pattern
Stock stock1 = new Stock("laptop", 100);
BuyStock buyStock = new BuyStock(stock1);
Stock stock2 = new Stock("screen", 30);
SellStock sellStock = new SellStock(stock2);
Broker broker = new Broker();
broker.TakeOrder(buyStock);
broker.TakeOrder(sellStock);
broker.PlaceOrders();
Console.WriteLine("\nInterpreter");
//Interpreter Pattern
IExpression isMale = InterpreterPatternDemo.GetMaleExpression();
IExpression isMarried = InterpreterPatternDemo.GetMarriedWomanExpression();
Console.WriteLine("John is male ? " + isMale.Interpret("john"));
Console.WriteLine("Barbara is male ? " + isMale.Interpret("barbara"));
Console.WriteLine("Julie is married ? " + isMarried.Interpret("julie married"));
Console.WriteLine("Bob is married ? " + isMarried.Interpret("bob married"));
}