Пример #1
0
        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
        {
            var orders = Order.GenerateRandomData(10);

            using (var session = _documentStore.LightweightSession())
            {
                session.Store(orders);
                await session.SaveChangesAsync();

                // order.id gets assigned with new unique id
            }

            using (var session = _documentStore.LightweightSession())
            {
                var savedOrder = await session.LoadAsync <Order>(orders[0].Id);

                System.Console.WriteLine($"{savedOrder.Id} {savedOrder.CustomerId} {savedOrder.Details.Count}");
                foreach (var od in orders[0].Details)
                {
                    System.Console.WriteLine($"{od}");
                }
            }

            using (var session = _documentStore.QuerySession())
            {
                var orderCount = await session.QueryAsync(new GetCount());

                System.Console.WriteLine($"#orders in db is {orderCount}");
            }

            // event store demo for order system
            var orderStarted = new OrderStarted {
                Id = Guid.NewGuid(), Name = "Order 1 (events demo)"
            };

            var addedDetails = new List <OrderDetail>();

            addedDetails.Add(new OrderDetail {
                PartNumber = "XX123", Number = 10
            });
            addedDetails.Add(new OrderDetail {
                PartNumber = "YY231", Number = 20
            });
            addedDetails.Add(new OrderDetail {
                PartNumber = "ZZ312", Number = 30
            });
            var addDetails = new OrderDetailsAdded {
                OrderDetails = addedDetails, Id = orderStarted.Id
            };

            var removedDetails = new List <OrderDetail>();

            removedDetails.Add(addedDetails.ElementAt(0));
            var removeDetails = new OrderDetailsRemoved {
                OrderDetails = removedDetails, Id = orderStarted.Id
            };

            using (var session = _documentStore.LightweightSession())
            {
                session.Events.StartStream(orderStarted.Id, orderStarted, addDetails, removeDetails);
                session.SaveChanges();
            }

            var newDetails = new List <OrderDetail>();

            newDetails.Add(new OrderDetail {
                PartNumber = "AA111", Number = 99
            });

            var addNewDetails = new OrderDetailsAdded {
                OrderDetails = newDetails, Id = orderStarted.Id
            };

            var submitOrder = new OrderSubmitted()
            {
                Id = orderStarted.Id, Name = orderStarted.Name
            };

            using (var session = _documentStore.LightweightSession())
            {
                session.Events.Append(orderStarted.Id, addNewDetails, submitOrder);
                session.SaveChanges();
            }

            using (var session = _documentStore.LightweightSession())
            {
                var orderSummary = session.Events.AggregateStream <OrderSummary>(orderStarted.Id);

                System.Console.WriteLine(JsonConvert.SerializeObject(orderSummary));
            }

            await Task.Delay(1000, stoppingToken);
        }
Пример #2
0
 public void Apply(OrderDetailsRemoved removed) =>
 Details.RemoveAll(x => removed.OrderDetails.Contains(x));