再战设计模式(三)之建造者模式

/**
 * 汽车
 * @Created by xiaodao
 */
public class Car {

    private Seat seat;
    private Engine engine;//发动机

    private Tyre tyre;//轮胎



    public Car(Seat seat, Engine engine, Tyre tyre) {

        this.seat = seat;
        this.engine = engine;
        this.tyre = tyre;
    }

    public Seat getSeat() {
        return seat;
    }

    public void setSeat(Seat seat) {
        this.seat = seat;
    }

    public Engine getEngine() {
        return engine;
    }

    public void setEngine(Engine engine) {
        this.engine = engine;
    }

    public Tyre getTyre() {
        return tyre;
    }

    public void setTyre(Tyre tyre) {
        this.tyre = tyre;
    }
}

/**
 * @Created by xiaodao
 * 引擎实例
 */
public class Engine {

    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Engine(String name) {
        this.name = name;
    }
}


/**
 * @Created by xiaodao
 * 座椅
 */
public class Seat {
    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Seat(String name) {
        this.name = name;
    }
}

/**
 * @Created by xiaodao
 *轮胎
 */
public class Tyre {
    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Tyre(String name) {
        this.name = name;
    }
}

/**
 * @Created by xiaodao
 * 构建接口 这里也可以是抽象方法
 */
public interface CarBuilder {

    /**
     * 构建引擎
     *
     * @return
     */
    Engine builderEngine();

    Seat builderSeat();

    Tyre builderTyre();
}

/**
 * @Created by xiaodao
 */
public class AudiCarBuilderImpl implements CarBuilder {
    @Override
    public Engine builderEngine() {
        return new Engine("奥迪引擎");
    }

    @Override
    public Seat builderSeat() {
        return new Seat("奥迪座椅");
    }

    @Override
    public Tyre builderTyre() {
        return new Tyre("奥迪轮胎");
    }
}

/**
 * @Created by xiaodao
 */
public class CarDirector {

    private CarBuilder builder;

    public CarDirector(CarBuilder builder) {
        this.builder = builder;
    }

    /**
     * 装配汽车
     * @return
     */
    public Car directCar(){

        Engine engine = builder.builderEngine();
        Seat seat = builder.builderSeat();
        Tyre tyre = builder.builderTyre();
        return new Car(seat,engine,tyre);
    }
}

public class Client {
    public static void main(String[] args) {

        CarDirector carDirector = new CarDirector(new AudiCarBuilderImpl());
        Car car = carDirector.directCar();
        System.out.println(car.getEngine().getName());
        System.out.println(car.getSeat().getName());
        System.out.println(car.getTyre().getName());
    }
}