장면

건설자 모델의 본질

예제

package builder;

public class AirShip {
    private OrbitalModule orbitalModule;    //  
    private Engine engine;                          //  
    private EscapeTower escapeTower;     //  

    public void launch(){
        System.out.println(" ");
    }

    public OrbitalModule getOrbitalModule() {
        return orbitalModule;
    }

    public void setOrbitalModule(OrbitalModule orbitalModule) {
        this.orbitalModule = orbitalModule;
    }

    public Engine getEngine() {
        return engine;
    }

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

    public EscapeTower getEscapeTower() {
        return escapeTower;
    }

    public void setEscapeTower(EscapeTower escapeTower) {
        this.escapeTower = escapeTower;
    }
}

class OrbitalModule{
    private String name;

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

    public String getName() {
        return name;
    }

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

class Engine{
    private String name;

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

    public String getName() {
        return name;
    }

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

class EscapeTower{
    private String name;

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

    public String getName() {
        return name;
    }

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

package builder;

public interface AirShipBuilder {
    Engine builderEngine();
    OrbitalModule builderOrbitalModule();
    EscapeTower builderEscapeTower();
}

package builder;

public interface AirShipDirector {
    /**
     *  
     * @return
     */
    AirShip directAirShip();
}

package builder;

public class MyAirShipBuilder implements AirShipBuilder{
    //StringBuilder,DomBuilder,SaxBuilder
    public Engine builderEngine() {
        System.out.println(" ");
        return new Engine(" ");
    }

    public OrbitalModule builderOrbitalModule() {
        System.out.println(" ");
        return new OrbitalModule(" ");
    }

    public EscapeTower builderEscapeTower() {
        System.out.println(" ");
        return new EscapeTower(" ");
    }
}

package builder;

public class MyAirShipDirector implements AirShipDirector{
    private AirShipBuilder builder;

    public MyAirShipDirector(AirShipBuilder builder) {
        this.builder = builder;
    }

    public AirShip directAirShip() {
        Engine engine = builder.builderEngine();
        OrbitalModule orbitalModule = builder.builderOrbitalModule();
        EscapeTower escapeTower = builder.builderEscapeTower();
        // 
        AirShip airShip = new AirShip();
        airShip.setEngine(engine);
        airShip.setOrbitalModule(orbitalModule);
        airShip.setEscapeTower(escapeTower);
        return airShip;
    }
}

package builder;

public class Client {
    public static void main(String[] args) {
        AirShipDirector director = new MyAirShipDirector(new MyAirShipBuilder());
        AirShip airShip = director.directAirShip();
        System.out.println(airShip.getEngine().getName());
        airShip.launch();
    }
}

개발 중인 응용 장면: