public static Singleton Instance()
{
if (_instance == null) {
_instance = new Singleton ();
}
return _instance;
}
public static Singleton GetInstance()
{
if(uniqueInstance == null)
{
lock(locker)
{
if (uniqueInstance == null)
{
uniqueInstance = new Singleton();
}
}
}
return uniqueInstance;
}
static void Main()
{
/********** Creationals Patterns **********/
#region Singleton
Console.WriteLine("********** Singleton pattern **********\n");
var s1 = Singleton.GetSingleton();
var s2 = Singleton.GetSingleton();
if (s1 == s2)
{
Console.WriteLine("Singleton works, both variables contain the same instance.");
}
else
{
Console.WriteLine("Singleton failed, variables contain different instances.");
}
#endregion
#region Prototype
Console.WriteLine("\n********** Prototype pattern **********\n");
// Create an instance of Person and assign values to its fields.
Person p1 = new Person
{
Age = 42,
Name = "Sam",
IdInfo = new IdInfo(6565)
};
// Perform a shallow copy of p1 and assign it to p2.
Person p2 = p1.ShallowCopy();
// Display values of p1, p2
Console.WriteLine("Original values of p1 and p2:");
Console.WriteLine(" p1 instance values: ");
DisplayValues(p1);
Console.WriteLine(" p2 instance values:");
DisplayValues(p2);
// Change the value of p1 properties and display the values of p1 and p2.
p1.Age = 32;
p1.Name = "Frank";
p1.IdInfo.IdNumber = 7878;
Console.WriteLine("\nValues of p1 and p2 after changes to p1:");
Console.WriteLine(" p1 instance values: ");
DisplayValues(p1);
Console.WriteLine(" p2 instance values:");
DisplayValues(p2);
// Make a deep copy of p1 and assign it to p3.
Person p3 = p1.DeepCopy();
// Change the members of the p1 class to new values to show the deep copy.
p1.Name = "George";
p1.Age = 39;
p1.IdInfo.IdNumber = 8641;
Console.WriteLine("\nValues of p1 and p3 after changes to p1:");
Console.WriteLine(" p1 instance values: ");
DisplayValues(p1);
Console.WriteLine(" p3 instance values:");
DisplayValues(p3);
Console.WriteLine("\nTest PrototypeModule");
var protoNames = new[] { "Garbage", "Alpha Version", "Beta Version", "Nothing", "Release Candidate" };
InitializePrototypes();
List <IPrototype> prototypes = new List <IPrototype>();
// 6. Client does not use "new"
foreach (var protoName in protoNames)
{
IPrototype prototype = PrototypeModule.CreatePrototype(protoName);
if (prototype != null)
{
prototypes.Add(prototype);
}
}
foreach (var p in prototypes)
{
p.Execute();
}
//
static void Main(string[] args)
{
//
Singleton.Instance().DoSomething();
}
public static void Main()
{
//--------------------------- AbstractFactory
Console.WriteLine("--------------------------- AbstractFactory");
Client client = null;
client = new Client(new CocaColaFactory());
client.Run();
client = null;
client = new Client(new PepsiColaFactory());
client.Run();
/*
* AbstractFactory.Program + CocaColaBottle interacts with AbstractFactory.Program + CocaColaWater
* AbstractFactory.Program + CocaColaCover closes AbstractFactory.Program + CocaColaBottle
* AbstractFactory.Program + PepsiColaBottle interacts with AbstractFactory.Program + PepsiColaWater
* AbstractFactory.Program + PepsiColaCover closes AbstractFactory.Program + PepsiColaBottle
*/
//--------------------------- Builder
Console.WriteLine("--------------------------- Builder");
Builder stoneHouseBuilder = new ConcreteBuilder();
Director director = new Director(stoneHouseBuilder);
director.Construct();
House house = stoneHouseBuilder.GetResult();
house.Show();
/*
* Basement Created
* Floor Created
* Roof Created
* Element: DesignPatterns.Basement builded.
* Element: DesignPatterns.Floor builded.
* Element: DesignPatterns.Roof builded.
*/
//--------------------------- FactoryMethod
Console.WriteLine("--------------------------- FactoryMethod");
Creator creator = new ConcreteCreator();
Product product = null;
product = creator.FactoryMethod();
//creator.AnOperation();
/* 46104728 */
//--------------------------- Prototype
Console.WriteLine("--------------------------- Prototype");
Prototype prototype = new ConcretePrototype1(1);
Prototype clone = prototype.Clone();
clone.AnOperation();
Prototype prototype2 = new ConcretePrototype2(2);
Prototype clone2 = prototype2.Clone();
clone2.AnOperation();
/*
* ID : 1
* Class : DesignPatterns.ConcretePrototype1
* ID : 2
* Class : DesignPatterns.ConcretePrototype2
*/
//--------------------------- Singleton
Console.WriteLine("--------------------------- Singleton");
Singleton firstInstance = Singleton.Instance();
Singleton secondInstance = Singleton.Instance();
// Singleton thirdinstance = new Singleton(); // error
Console.WriteLine(firstInstance.GetHashCode());
Console.WriteLine(secondInstance.GetHashCode());
Console.WriteLine(ReferenceEquals(firstInstance, secondInstance));
firstInstance.SampleOperation();
Console.WriteLine(secondInstance.GetSampleData());
/*
* 12289376
* 12289376
* True
* Singleton Sample Data
*/
//Console.WriteLine("--------------------------- Adapter (Class)");
//iTarget target = new Adapter();
//target.Operation();
Console.WriteLine("--------------------------- Adapter (Object)");
Target target = new Adapter();
target.Operation();
/*
* SpecificOperation
*/
//--------------------------- Bridge
Console.WriteLine("--------------------------- Bridge");
Abstract AnotherAbs11 = new RefinedAbstract1(new ConcreteImp1());
Console.WriteLine(AnotherAbs11.DoSomething());
Abstract AnotherAbs21 = new RefinedAbstract2(new ConcreteImp1());
Console.WriteLine(AnotherAbs21.DoSomething());
Abstract AnotherAbs12 = new RefinedAbstract1(new ConcreteImp2());
Console.WriteLine(AnotherAbs12.DoSomething());
Abstract AnotherAbs22 = new RefinedAbstract2(new ConcreteImp2());
Console.WriteLine(AnotherAbs22.DoSomething());
/*
* RefinedAbstract1 is doing smth. with Imp1
* RefinedAbstract2 is doing different things with Imp1
* RefinedAbstract1 is doing smth. with Imp2
* RefinedAbstract2 is doing different things with Imp2
*/
//--------------------------- Composite
Console.WriteLine("--------------------------- Composite");
Component root = new Composite("root");
Component branch1 = new Composite(" - branch1");
Component branch2 = new Composite(" - branch2");
Component leaf1 = new Leaf(" - - leaf1");
Component leaf2 = new Leaf(" - - leaf2");
Component leaf3 = new Leaf(" - - leaf3");
root.Add(branch1);
root.Add(branch2);
branch1.Add(leaf1);
branch1.Add(leaf2);
branch2.Add(leaf3);
root.Operation();
/*
* root
* - branch1
* - - leaf1
* - - leaf2
* - branch2
* - - leaf3
*/
//--------------------------- Decorator
Console.WriteLine("--------------------------- Decorator");
AbstractComponent someComponenet = new ConcreteComponenet();
Decorator decoratorA = new ConcreteDecoratorA();
Decorator decoratorB = new ConcreteDecoratorB();
decoratorA.component = someComponenet;
decoratorB.component = decoratorA;
decoratorB.Operation();
/*
* Concrete Componenet Operation
* Some State
* Some Behavior
*/
//--------------------------- Facade
Console.WriteLine("--------------------------- Facade");
Facade facade = new Facade();
facade.OperationAB();
facade.OperationCD();
/*
* Operation A
* Operation B
* Operation C
* Operation D
*/
//--------------------------- Flyweight
Console.WriteLine("--------------------------- Flyweight");
/*
* int externalState = 0;
*
* Flyweight flyweight = null;
* FlyweightFactory factory = new FlyweightFactory();
*
* flyweight = factory.GetFlyweight("1");
* flyweight.Operation(externalState);
*
* flyweight = factory.GetFlyweight("10");
* flyweight.Operation(externalState);
*
* flyweight = new UnsharedConcreteFlyweight();
* flyweight.Operation(externalState);
*/
ActorMikeMyers mike = new ActorMikeMyers();
RoleAustinPowers austin = new RoleAustinPowers(mike);
austin.Greetings("Hello! I'm Austin Powers!");
RoleDoctorEvil dr = new RoleDoctorEvil(mike);
dr.Greetings("Hello! I'm Dr. Evil!");
/*
* Hello! I'm Austin Powers!
* Hello! I'm Dr. Evil!
*/
//--------------------------- Proxy
Console.WriteLine("--------------------------- Proxy");
//Subject original = new Original();
//Subject proxy = new Proxy(original);
//proxy.Operation();
Subject anotherProxy = new Proxy();
anotherProxy.Operation();
/*
* Do Smth
* Do Smth
*/
//--------------------------- ChainOfResponsibility
Console.WriteLine("--------------------------- ChainOfResponsibility");
Handler concreteHandler1 = new ConcreteHandler1();
Handler concreteHandler2 = new ConcreteHandler2();
concreteHandler1.successor = concreteHandler2;
concreteHandler1.Operation(1);
concreteHandler1.Operation(2);
/*
* One
* Two
*/
//--------------------------- Command
Console.WriteLine("--------------------------- Command");
Receiver povar = new Receiver();
Command zakaz = new ConcreteCommand(povar);
//Invoker ofichiant = new Invoker(zakaz);
Invoker ofichiant = new Invoker();
ofichiant.StoreCommand(zakaz);
ofichiant.Execute();
/*
* Receiver!
*/
//--------------------------- Interpreteur
Console.WriteLine("--------------------------- Interpreteur");
Context context = new Context
{
Vocabulary = 'a',
Source = "aaa"
};
var expression = new NonTerminalExpression();
expression.Interpret(context);
Console.WriteLine(context.Result);
/*
* True
*/
Console.ReadKey();
}
public static Singleton Instance() {
//
if (_Instance == null) _Instance = new Singleton();
return _Instance;
}
