37.3. 위젯 벤더 예

System.out.println("What type of widgets do you want to order?");
System.out.println("1 - Normal");
System.out.println("2 - Wood");
System.out.println("3 - Plastic");
System.out.println("Selection [1-3]");
String selection = reader.readLine();
String trimmed = selection.trim();
char widgetType = trimmed.charAt(0);
switch (widgetType)
{
  case '1':
  {
    WidgetType widget = new WidgetType();
    ...
    break;
  }
  case '2':
  {
    WoodWidgetType widget = new WoodWidgetType();
    ...
    break;
  }
  case '3':
  {
    PlasticWidgetType widget = new PlasticWidgetType();
    ...
    break;
  }
  default :
    System.out.println("Invaid Widget Selection!!");
}

proxy.checkWidgets(widgets);

public int checkWidgets(WidgetType widgetPart)
{
  if (widgetPart instanceof WidgetType)
  {
    return checkWidgetInventory(widgetType);
  }
  else if (widgetPart instanceof WoodWidgetType)
  {
    WoodWidgetType widget = (WoodWidgetType)widgetPart;
    return checkWoodWidgetInventory(widget);
  }
  else if (widgetPart instanceof PlasticWidgetType)
  {
    PlasticWidgetType widget = (PlasticWidgetType)widgetPart;
    return checkPlasticWidgetInventory(widget);
  }
}

ObjectFactory of = new ObjectFactory();

WidgetOrderInfo order = new of.createWidgetOrderInfo();
...
System.out.println();
System.out.println("What color widgets do you want to order?");
String color = reader.readLine();
System.out.println();
System.out.println("What shape widgets do you want to order?");
String shape = reader.readLine();
System.out.println();
System.out.println("What type of widgets do you want to order?");
System.out.println("1 - Normal");
System.out.println("2 - Wood");
System.out.println("3 - Plastic");
System.out.println("Selection [1-3]");
String selection = reader.readLine();
String trimmed = selection.trim();
char widgetType = trimmed.charAt(0);
switch (widgetType)
{
  case '1':
  {
    WidgetType widget = of.createWidgetType();
    widget.setColor(color);
    widget.setShape(shape);
    JAXB<WidgetType> widgetElement = of.createWidget(widget); order.setWidget(widgetElement);
    break;
  }
  case '2':
  {
    WoodWidgetType woodWidget = of.createWoodWidgetType();
    woodWidget.setColor(color);
    woodWidget.setShape(shape);
    System.out.println();
    System.out.println("What type of wood are your widgets?");
    String wood = reader.readLine();
    woodWidget.setWoodType(wood);
    JAXB<WoodWidgetType> widgetElement = of.createWoodWidget(woodWidget); order.setWoodWidget(widgetElement);
    break;
  }
  case '3':
  {
    PlasticWidgetType plasticWidget = of.createPlasticWidgetType();
    plasticWidget.setColor(color);
    plasticWidget.setShape(shape);
    System.out.println();
    System.out.println("What type of mold to use for your
                        widgets?");
    String mold = reader.readLine();
    plasticWidget.setMoldProcess(mold);
    JAXB<WidgetType> widgetElement = of.createPlasticWidget(plasticWidget); order.setPlasticWidget(widgetElement);
    break;
  }
  default :
    System.out.println("Invaid Widget Selection!!");
    }

public com.widgetvendor.types.widgettypes.WidgetOrderBillInfo placeWidgetOrder(WidgetOrderInfo widgetOrderForm)
{
  ObjectFactory of = new ObjectFactory();

  WidgetOrderBillInfo bill = new WidgetOrderBillInfo()

   // Copy the shipping address and the number of widgets
   // ordered from widgetOrderForm to bill
   ...

  int numOrdered = widgetOrderForm.getAmount();

  String elementName = widgetOrderForm.getWidget().getName().getLocalPart();
  if (elementName.equals("woodWidget")
  {
    WoodWidgetType widget=order.getWidget().getValue();
    buildWoodWidget(widget, numOrdered);

    // Add the widget info to bill
    JAXBElement<WoodWidgetType> widgetElement = of.createWoodWidget(widget);
    bill.setWidget(widgetElement);

    float amtDue = numOrdered * 0.75;
    bill.setAmountDue(amtDue);
  }
  else if (elementName.equals("plasticWidget")
  {
    PlasticWidgetType widget=order.getWidget().getValue();
    buildPlasticWidget(widget, numOrdered);

    // Add the widget info to bill
    JAXBElement<PlasticWidgetType> widgetElement = of.createPlasticWidget(widget);
    bill.setWidget(widgetElement);

    float amtDue = numOrdered * 0.90;
    bill.setAmountDue(amtDue);
  }
  else
  {
    WidgetType widget=order.getWidget().getValue();
    buildWidget(widget, numOrdered);

    // Add the widget info to bill
    JAXBElement<WidgetType> widgetElement = of.createWidget(widget);
    bill.setWidget(widgetElement);

    float amtDue = numOrdered * 0.30;
    bill.setAmountDue(amtDue);
  }

  return(bill);
}