Spring Boot Umsetzung im Praxisprojekt

@RestController
@RequestMapping("/api/orders")
final class OrderController { // Pattern: Inbound Adapter
    private final PlaceOrderUseCase placeOrder;

    OrderController(PlaceOrderUseCase placeOrder) {
        this.placeOrder = placeOrder;
    }

    @PostMapping
    ResponseEntity<OrderResponse> place(@Valid @RequestBody PlaceOrderRequest request) {
        OrderId id = placeOrder.handle(request.toCommand());
        return ResponseEntity.created(URI.create("/api/orders/" + id.value()))
                .body(new OrderResponse(id.value(), "ACCEPTED"));
    }
}

@Configuration
class OrderApplicationConfig {
    @Bean
    PlaceOrderUseCase placeOrderUseCase(OrderRepository orders,
                                        InventoryPort inventory,
                                        TransactionRunner tx,
                                        OutboxPort outbox) {
        return new PlaceOrderUseCase(orders, inventory, tx, outbox);
    }
}