Using the Transaction Script pattern - POJOs in Action: Developing Enterprise Applications with Lightweight Frameworks - page 328

public interface PlaceOrderTransactionScripts {

public UpdateDeliveryInfoResult updateDeliveryInfo(
String pendingOrderId,
Address deliveryAddress, Date deliveryTime);

public PlaceOrderResult updateRestaurant(
String pendingOrderId, String restaurantId);

public PlaceOrderResult updateQuantities(
String pendingOrderId, int[] quantities);
…
}
Let's now develop the implementation the transaction script's interface.

<<interface>>
PlaceOrderTransactionScripts

UpdateDeliveryInfoResult updateDeliveryInfo(pendingOrderId, address, time)
PlaceOrderResult updateRestaurant(pendingOrderId, restaurantId)
PlaceOrderResult updateQuantities(pendingOrderId, quantities)
...

<<dto>>
PendingOrderLine
ItemDTO

<<dto>>
PendingOrderDTO

<<dto>>
PlaceOrderResult

getId()
getDeliveryTime()
getDeliveryAddress()
...

getQuantity()
getMenuItem()
getExtendedPrice()

getStatusCode()
getPendingOrderDetail()

<<dto>>
UpdateDeliveryInfo
Result

getAvailableRestaurants()

<<DTO>>
RestaurantSummary
DTO

<<dto>>
MenuItemDTO

<<dto>>
RestaurantDTO

getId()
getName()
getPrice()

getId()
getName()

getMenuItems()

Figure 9.3 Design of the transaction script interface