private void Subscribe()
        {
            // create an instance of the topic helper
            var helper = ServiceBusTopicHelper.Setup(SubscriptionInitializer.Initialize());

            // send the message into the topic
            helper.Subscribe <PizzaOrder>((order) =>
            {
                // save the order
                var context = new EnterprisePizzaDataContext();
                context.Orders.Add(order);
                context.SaveChanges();

                // write out a note
                Console.WriteLine("Order {0} just taken with {1} pizza(s)",
                                  order.Id,
                                  order.Pizzas.Count);

                // now notify the store of the new order
                order.IsOrdered = true;

                // publish the messages as saved but not received yet
                helper.Publish <PizzaOrder>(order, (m) =>
                {
                    m.Properties["IsOrdered"]         = true;
                    m.Properties["IsReceivedByStore"] = false;
                });
            }
                                          , "(IsOrdered = false) AND (IsReceivedByStore = false)",
                                          "NewPizzaOrders"
                                          );
        }
        public static OrderItem ConvertOrderToViewModel(PizzaOrder order)
        {
            // get the ingredients from the database
            var dataContext = new EnterprisePizzaDataContext();
            var ingredients = dataContext.AvailableIngredients.ToList();

            // build the object we'll throw into the service bus topic
            var item = new OrderItem
            {
                OrderId          = order.Id,
                ClientIdentifier = order.ClientIdentifier.Value
            };

            // add the pizzas to the order
            order.Pizzas.ForEach(p =>
            {
                var pizzaItem = new PizzaItem
                {
                    PizzaId = p.Id
                };

                // add the sections to the pizza
                p.Sections.ForEach(s =>
                {
                    var sectionItem = new SectionItem();

                    s.Ingredients.ForEach(i =>
                    {
                        sectionItem.Toppings.Add(
                            ingredients.First(x =>
                                              x.Id == i.AvailableIngredientId).Name);
                    });

                    pizzaItem.Sections.Add(sectionItem);
                });

                item.Pizzas.Add(pizzaItem);
            });

            return(item);
        }