eshop-ordering-domain/me.ahoo.wow.example.eshop.ordering.domain.order/Order/onCommand

onCommand

fun onCommand(command: SubmitOrder): OrderSubmitted

fun onCommand(command: PayOrder, scope: DecideScope): OrderPaid

fun onCommand(command: ShipOrder): OrderShipped

fun onCommand(command: AwaitStockValidation): OrderAwaitingValidation?

Moving on an order that is no longer submitted, one cancelled meanwhile say, changes nothing.

@OnCommand(produces = [OrderStockItemConfirmed::class, OrderStockConfirmed::class], schedules = [CancelOrder::class])

fun onCommand(command: ConfirmOrderStock, paymentPolicy: PaymentPolicy, scope: DecideScope): Decision

Confirms one product. A confirmation the order does not wait for changes nothing: one read again from the stock stream, or one that arrives after another product's shortage cancelled the order (that reservation is released when the inventory hears of the cancellation).

fun onCommand(command: CancelOrder, scope: DecideScope): OrderCancelled?

Cancelling a cancelled order changes nothing: the saga cancels once for each product the inventory refused.