예제 #1
0
        static void Run()
        {
            Console.WriteLine("***Facade Pattern Demo***\n");

            //Creating Robots
            RobotFacade rf1 = new RobotFacade();

            rf1.ConstructMilanoRobot();
            RobotFacade rf2 = new RobotFacade();

            rf2.ConstructRobonautRobot();

            //Destroying robots
            rf1.DestroyMilanoRobot();
            rf2.DestroyRobonautRobot();
            Console.ReadLine();
        }
예제 #2
0
        static void Main(string[] args)
        {
            //Creational Patterns
            Console.WriteLine("Creational Patterns");
            #region Singleton
            Console.WriteLine("***Singleton Pattern Demo***\n");

            Console.WriteLine("Trying to create instance s1.");
            Singleton s1 = Singleton.Instance;

            Console.WriteLine("Trying to create instance s2.");
            Singleton s2 = Singleton.Instance;

            if (s1 == s2)
            {
                Console.WriteLine("Only one instance exists.");
            }
            else
            {
                Console.WriteLine("Different instances exists.");
            }
            #endregion

            Console.WriteLine("###########################");

            #region Prototype
            Console.WriteLine("***Prototype Pattern Demo***\n");
            //Base or Original
            BasicCar nano_base = new Nano("Green Nano")
            {
                Price = 100000
            };
            BasicCar ford_base = new Ford("FordYellow")
            {
                Price = 500000
            };
            BasicCar bc1;

            //Nano
            bc1       = nano_base.Clone();
            bc1.Price = nano_base.Price + BasicCar.SetPrice();
            Console.WriteLine($"Car is {bc1.ModelName}, and price is {bc1.Price}");

            //Ford
            bc1       = ford_base.Clone();
            bc1.Price = ford_base.Price + BasicCar.SetPrice();
            Console.WriteLine($"Car is {bc1.ModelName}, and price is {bc1.Price}");
            #endregion

            Console.WriteLine("###########################");

            #region Buuilder
            Console.WriteLine("***Builder Pattern Demo***");
            Director director = new Director();

            IBuilder b1 = new Car("Ford");
            IBuilder b2 = new MotorCycle("Honda");

            //Mking Car
            director.Construct(b1);
            Product p1 = b1.GetVehicle();
            p1.Show();

            //Making Motorcycle
            director.Construct(b2);
            Product p2 = b2.GetVehicle();
            p2.Show();
            #endregion

            Console.WriteLine("###########################");

            #region Factory Method Pattern
            Console.WriteLine("***Factory Pattern Demo***\n");

            // Creating a Tiger Factory
            AnimalFactory tigerFactory = new TigerFactory();
            // Creating a tiger using the Factory Method
            IAnimal aTiger = tigerFactory.CreateAnimal();
            aTiger.AboutMe();
            aTiger.Action();

            // Creating a DogFactory
            AnimalFactory dogFactory = new DogFactory();
            // Creating a dog using the Factory Method
            IAnimal aDog = dogFactory.CreateAnimal();
            aDog.AboutMe();
            aDog.Action();
            #endregion

            Console.WriteLine("###########################");

            #region Abstract Factory Pattern

            Console.WriteLine("***Abstract Factory Pattern Demo***\n");
            //Making a wild dog through WildAnimalFactory
            IAnimalFactory wildAnimalFactory = new WildAnimalFactory();
            IDog           wildDog           = wildAnimalFactory.GetDog();

            wildDog.Speak();
            wildDog.Action();
            //Making a wild tiger through WildAnimalFactory
            ITiger wildTiger = wildAnimalFactory.GetTiger();
            wildTiger.Speak();
            wildTiger.Action();
            Console.WriteLine("******************");
            //Making a pet dog through PetAnimalFactory
            IAnimalFactory petAnimalFactory = new PetAnimalFactory();
            IDog           petDog           = petAnimalFactory.GetDog();
            petDog.Speak();
            petDog.Action();
            //Making a pet tiger through PetAnimalFactory
            ITiger petTiger = petAnimalFactory.GetTiger();
            petTiger.Speak();
            petTiger.Action();
            #endregion

            Console.WriteLine("###########################");

            //Structural Patterns
            Console.WriteLine("Structural Patterns");

            #region Proxy Pattern
            Console.WriteLine("***Proxy Pattern Demo***");
            Proxy px = new Proxy();
            px.DoSomeWork();
            #endregion

            Console.WriteLine("###########################");

            #region Decorator Pattern
            Console.WriteLine("***Decorator Pattern Simulation***");
            ConcreteComponent cc = new ConcreteComponent();

            ConcreteDecoratorEx1 decorator1 = new ConcreteDecoratorEx1();
            decorator1.SetTheComponent(cc);
            decorator1.MakeHouse();

            ConcreteDecoratorEx2 decorator2 = new ConcreteDecoratorEx2();
            //Adding results from decorator1
            decorator2.SetTheComponent(decorator1);
            decorator2.MakeHouse();
            #endregion

            Console.WriteLine("###########################");

            #region Adapter Pattern

            Console.WriteLine("***Adapter Pattern Demo***\n");
            CalculatorAdapter cal = new CalculatorAdapter();
            Triangle          t   = new Triangle(20, 10);
            Console.WriteLine($"Area of Triangle is {cal.GetArea(t)} square unit");

            #endregion

            Console.WriteLine("###########################");

            #region Facade Pattern

            Console.WriteLine("***Facade Pattern Demo***");
            RobotFacade robotFacade1 = new RobotFacade(); // Creating Robots
            robotFacade1.ConstructMilanoRobot();

            RobotFacade robotFacade2 = new RobotFacade(); // Creating Robots
            robotFacade2.ConstructRobonautRobot();

            robotFacade1.DestroyMilanoRobot();            //Destroying Robots
            robotFacade2.DestroyRobonautRobot();
            #endregion

            Console.WriteLine("###########################");

            #region Flyweight Pattern
            Console.WriteLine("***Flyweight Pattern Demo***");
            RobotFactory myFactory = new RobotFactory();
            IRobot       shape     = myFactory.GetRobotFromFactory("Small");
            shape.Print();

            //Creating small robots
            for (int i = 0; i < 2; i++)
            {
                shape = myFactory.GetRobotFromFactory("Small");
                shape.Print();
            }

            int numOfDistinctRobots = myFactory.TotalObjectsCreated;
            Console.WriteLine($"Number of distinct robot objects is {numOfDistinctRobots}");

            //Creating large robots
            for (int i = 0; i < 5; i++)
            {
                shape = myFactory.GetRobotFromFactory("Large");
                shape.Print();
            }

            numOfDistinctRobots = myFactory.TotalObjectsCreated;
            Console.WriteLine($"Distinct robot objects created till now {numOfDistinctRobots}");
            #endregion

            Console.WriteLine("###########################");

            #region Composite Pattern
            #region Mathematics department
            Console.WriteLine("***Composite Pattern***");
            //2 Lecturers work in Mathematics department
            Employee mathLecturer1 = new Employee {
                Name = "M. Joy", Dept = "Mathematics", Designation = "Lecturer"
            };
            Employee mathLecturer2 = new Employee {
                Name = "M. Ronny", Dept = "Mathematics", Designation = "Lecturer"
            };

            //The college has Head of Department in Mathematics
            CompositeEmployee hodMaths = new CompositeEmployee {
                Name = "Mrs. S. Das", Dept = "Maths", Designation = "HOD-Maths"
            };

            //Lecturers of Mathematics directly perort to HOD-Maths
            hodMaths.AddEmpployee(mathLecturer1);
            hodMaths.AddEmpployee(mathLecturer2);
            #endregion

            #region Computer Science department
            //3 lecturers work in Computer Sc. department
            Employee cseLecturer1 = new Employee {
                Name = "C. Sam", Dept = "Computer Sciense", Designation = "Lecturer"
            };
            Employee cseLecturer2 = new Employee {
                Name = "C. Jones", Dept = "Computer Sciense", Designation = "Lecturer"
            };
            Employee cseLecturer3 = new Employee {
                Name = "C. Marium", Dept = "Computer Sciense", Designation = "Lecturer"
            };

            //The College has a Head of Department in Computer science
            CompositeEmployee hodCompSc = new CompositeEmployee {
                Name = "Mr. V. Sarcar", Dept = "Computer Sc.", Designation = "HOD-Computer Sc."
            };

            //Lecturers of Computer Sc. directly reports to HOD-CSE
            hodCompSc.AddEmpployee(cseLecturer1);
            hodCompSc.AddEmpployee(cseLecturer2);
            hodCompSc.AddEmpployee(cseLecturer3);
            #endregion

            #region Top level management
            //College Principial
            CompositeEmployee principal = new CompositeEmployee {
                Name = "Dr.S.Som", Dept = "Planning-Supervising-Managing", Designation = "Principal"
            };

            //Mead of Department of Math and Computer Sciense apply to Principal
            principal.AddEmpployee(hodMaths);
            principal.AddEmpployee(hodCompSc);
            #endregion

            Console.WriteLine("Details of a Principal are these: ");
            principal.DisplayDetails();

            Console.WriteLine("Details of HOD object are these: ");
            hodCompSc.DisplayDetails();

            Console.WriteLine("Details of individual employee are these: ");
            mathLecturer1.DisplayDetails();

            //Lecturer leaves
            hodCompSc.RemoveEmployee(cseLecturer2);
            Console.WriteLine("After resignstion there are only these leecturers");
            principal.DisplayDetails();

            #endregion
        }