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package helloworld;

import helloworld.behavioral.chain_of_responsibility.HelloWorldObjectHandler;

import helloworld.behavioral.chain_of_responsibility.HelloWorldInterjectionHandler;

import helloworld.behavioral.chain_of_responsibility.HelloWorldHandler;

import helloworld.behavioral.command.Command;

import helloworld.behavioral.command.HelloWorldPrintCommand;

import helloworld.behavioral.interpreter.HelloWorldInterpreter;

import helloworld.behavioral.iterator.HelloWorldCharacterIterator;

import helloworld.behavioral.mediator.HelloWorldInterjection;

import helloworld.behavioral.mediator.HelloWorldMediator;

import helloworld.behavioral.mediator.HelloWorldObject;

import helloworld.behavioral.memento.HelloWorldMementoOriginator;

import helloworld.behavioral.observer.HelloWorldObserver;

import helloworld.behavioral.observer.Subject;

import helloworld.behavioral.state.HelloWorldStateContext;

import helloworld.behavioral.strategy.DesignPatternHelloWorldStrategy;

import helloworld.behavioral.strategy.HelloWorldStrategyContext;

import helloworld.behavioral.template_method.TemplateMethodHelloWorld;

import helloworld.behavioral.visitor.HelloWorldCharacterElements;

import helloworld.behavioral.visitor.HelloWorldCharacterVisitor;

import helloworld.behavioral.visitor.HelloWorldVisitor;

import helloworld.creational.abstract_factory.AbstractFactory;

import helloworld.creational.abstract_factory.SplitHelloWorldFactory;

import helloworld.creational.builder.HelloWorldBuilder;

import helloworld.creational.factory_method.FactoryMethodHelloWorldFactory;

import helloworld.creational.prototype.HelloWorldPrototype;

import helloworld.creational.singleton.HelloWorldSingleton;

import helloworld.structural.adapter.HelloAdapterDesignPattern;

import helloworld.structural.adapter.HelloWorldAdapter;

import helloworld.structural.bridge.DesignPatternWorldImpl;

import helloworld.structural.bridge.HelloWorldBridge;

import helloworld.structural.composite.CompositeHelloWorld;

import helloworld.structural.decorator.HelloWorldDecorator;

import helloworld.structural.facade.HelloWorldFacade;

import helloworld.structural.flyweight.HelloWorldFlyWeightFactory;

import helloworld.structural.proxy.HelloWorldProxy;

/**

* @author yihua.huang@dianping.com

*/

public class Main {

public static void main(String[] args) throws InstantiationException, IllegalAccessException {

System.out.println("We are creational patterns!");

System.out.println("1. Abstract Factory: ");

SplitHelloWorldFactory abstractFactory = AbstractFactory.select(AbstractFactory.Type.DesignPattern);

HelloWorld abstractFactoryHelloWorld = new SplitHelloWorld(abstractFactory.createHelloWorldInterjection(),

abstractFactory.createHelloWorldObject());

System.out.println(abstractFactoryHelloWorld.helloWorld());

System.out.println("2. Builder: ");

HelloWorld builderHelloWorld = HelloWorldBuilder.builder()

.interjection("Hello")

.object("Builder").getHelloWorld();

System.out.println(builderHelloWorld.helloWorld());

System.out.println("3. Factory Method: ");

/**

* Difference between "abstract factory" and "factory method" is the abstracting point:

* 1. Abstracting point of abstract factory is factory.

* 2. Abstracting point of factory method is generated object.

*/

FactoryMethodHelloWorldFactory factoryMethodHelloWorldFactory = new FactoryMethodHelloWorldFactory();

HelloWorld factoryMethodHelloWorld = factoryMethodHelloWorldFactory.createHelloWorld();

System.out.println(factoryMethodHelloWorld.helloWorld());

System.out.println("4. Prototype: ");

HelloWorld prototypeHelloWorld = HelloWorldPrototype.PROTOTYPE.clone();

System.out.println(prototypeHelloWorld.helloWorld());

System.out.println("5. Singleton: ");

HelloWorld singletonHelloWorld = HelloWorldSingleton.instance();

System.out.println(singletonHelloWorld.helloWorld());

System.out.println("====================================");

System.out.println("We are structural patterns!");

System.out.println("6. Adapter: ");

HelloWorld adapterHelloWorld = new HelloWorldAdapter(new HelloAdapterDesignPattern());

System.out.println(adapterHelloWorld.helloWorld());

System.out.println("7. Bridge: ");

HelloWorld bridgeHelloWorld = new HelloWorldBridge(new DesignPatternWorldImpl());

//leave bridgeHelloWorld' output to compositeHelloWorld

System.out.println("8. Composite: ");

HelloWorld compositeHelloWorld = new CompositeHelloWorld(bridgeHelloWorld, new CompositeHelloWorld.DefaultHelloWorld());

System.out.println(compositeHelloWorld.helloWorld());

System.out.println("9. Decorator: ");

HelloWorldDecorator decoratorHelloWorld = new HelloWorldDecorator(new HelloWorldDecorator.DefaultHelloWorld());

System.out.println(decoratorHelloWorld.helloDecorator());

System.out.println("10. Facade: ");

HelloWorld facadeHelloWorld = HelloWorldFacade.instance().facadeHelloWorld();

System.out.println(facadeHelloWorld.helloWorld());

System.out.println("11. Flyweight: ");

HelloWorld flyWeightHelloWorld = HelloWorldFlyWeightFactory.instance().createHelloWorld("Hello Flyweight!");

System.out.println(flyWeightHelloWorld.helloWorld());

System.out.println("12. Proxy: ");

HelloWorld proxyHelloWorld = new HelloWorldProxy(new HelloWorldProxy.DefaultHelloWorld());

System.out.println(proxyHelloWorld.helloWorld());

System.out.println("====================================");

System.out.println("We are behavioral patterns!");

System.out.println("13. Chain of Responsibility: ");

HelloWorldHandler helloWorldChainOfResponsibility = new HelloWorldInterjectionHandler().setNext(new HelloWorldObjectHandler());

System.out.println(helloWorldChainOfResponsibility.helloWorld());

System.out.println("14. Command: ");

Command helloWorldCommand = new HelloWorldPrintCommand();

helloWorldCommand.execute();

System.out.println("15. Interpreter: ");

HelloWorldInterpreter helloWorldInterpreter = new HelloWorldInterpreter();

helloWorldInterpreter.interpret("println('Hello Interpreter!')");

System.out.println("16. Iterator: ");

HelloWorldCharacterIterator helloWorldCharacterIterator = new HelloWorldCharacterIterator("Hello Iterator!".toCharArray());

while (helloWorldCharacterIterator.hasNext()) {

System.out.print(helloWorldCharacterIterator.next());

}

System.out.println();

System.out.println("17. Mediator: ");

HelloWorldInterjection helloWorldInterjection = new HelloWorldInterjection();

HelloWorldObject helloWorldObject = new HelloWorldObject();

HelloWorldMediator helloWorldMediator = new HelloWorldMediator(helloWorldInterjection, helloWorldObject);

helloWorldInterjection.setHelloWorldMediator(helloWorldMediator);

helloWorldObject.setHelloWorldMediator(helloWorldMediator);

System.out.println(helloWorldObject.helloWorld());

System.out.println("18. Memento: ");

HelloWorldMementoOriginator helloWorldMementoOriginator = new HelloWorldMementoOriginator();

HelloWorldMementoOriginator.Memento memento = helloWorldMementoOriginator.set("Hello Memento!").saveToMemento();

helloWorldMementoOriginator.set("Hello Whatever!");

helloWorldMementoOriginator.restoreFromMemento(memento);

System.out.println(helloWorldMementoOriginator.helloWorld());

System.out.println("19. Observer: ");

Subject subject = new Subject().attach(new HelloWorldObserver());

subject.notifyObservers();

System.out.println("20. State: ");

HelloWorldStateContext helloWorldStateContext = new HelloWorldStateContext();

HelloWorld stateHelloWorld = helloWorldStateContext.appendWord("Hello").appendWord("State");

System.out.println(stateHelloWorld.helloWorld());

System.out.println("21. Strategy: ");

HelloWorldStrategyContext helloWorldStrategyContext = new HelloWorldStrategyContext(new DesignPatternHelloWorldStrategy());

System.out.println(helloWorldStrategyContext.helloWorld());

System.out.println("22. Template Method: ");

HelloWorld templateMethodHelloWorld = new TemplateMethodHelloWorld();

System.out.println(templateMethodHelloWorld.helloWorld());

System.out.println("23. Visitor: ");

HelloWorldCharacterElements helloWorldCharacterElements = new HelloWorldCharacterElements("Hello Visitor!".toCharArray());

HelloWorldCharacterVisitor helloWorldCharacterVisitor = new HelloWorldCharacterVisitor();

helloWorldCharacterElements.accept(helloWorldCharacterVisitor);

System.out.println(helloWorldCharacterVisitor.helloWorld());

}

}