// Sample business method that uses Policy
public void ApplyRebate(IRebatePolicy rebatePolicy)
{
CheckIfDraft();
_rebatePolicy = rebatePolicy;
Recalculate();
}
public OrderLine(Product product, int quantity, IRebatePolicy rebatePolicy, Order order)
{
Product = product;
Quantity = quantity;
Order = order;
Recalculate(rebatePolicy);
}
public void Recalculate(IRebatePolicy rebatePolicy)
{
RegularCost = Product.Price.MultiplyBy(Quantity);
Money rebate = rebatePolicy.CalculateRebate(Product, Quantity,
RegularCost);
EffectiveCost = RegularCost - rebate;
}
public void SetRebatePolicy(IRebatePolicy rebatePolicy)
{
if (_rebatePolicy != null)
{
throw new IllegalStateException("Rebate policy has been already set");
}
_rebatePolicy = rebatePolicy;
}
// Sample technique of injecting Policy into the Aggregate.
// Can be called only once by Factory/Repository.
internal void SetRebatePolicy(IRebatePolicy rebatePolicy)
{
if (_rebatePolicy != null)
{
throw new IllegalStateException("Policy is already set! Probably You have logical error in code");
}
_rebatePolicy = rebatePolicy;
}
public VipRebate(IRebatePolicy decorated, Money minimalThreshold, Money rebateValue)
: base(decorated)
{
if (rebateValue > minimalThreshold)
{
throw new ArgumentException("Rabate can't be graterThan minimal threshold");
}
_minimalThreshold = minimalThreshold;
_rebateValue = rebateValue;
}
public void Handle()
{
Order order = _orderRepository.Get(14);
RebatePolicyFactory rebatePolicyFactory = new RebatePolicyFactory(_orderRepository, order.Customer);
IRebatePolicy rebatePolicy = rebatePolicyFactory.CreateRebatePolicy();
order.SetRebatePolicy(rebatePolicy);
order.AddProduct(new Product());
}
private void Recalculate(IRebatePolicy rebatePolicy)
{
TotalRegularPrice = Product.Price * Quantity;
if (HasAnyRebates(rebatePolicy))
{
TotalEffectivePrice = rebatePolicy.CalculateRebate(Product.Price, Quantity);
}
else
{
TotalEffectivePrice = TotalRegularPrice;
}
}
public void Handle()
{
int customerId = 12;
Customer customer = _customerRepository.GetCustomer(customerId);
RebatePolicyFactory rebatePolicyFactory = new RebatePolicyFactory(_orderRepository, customer);
IRebatePolicy rebatePolicy = rebatePolicyFactory.CreateRebatePolicy();
OrderFactory orderFactory = new OrderFactory(customer, rebatePolicy);
Order order = orderFactory.CreateOrder();
//TODO: Save order into the store
}
public Order CrateOrder(Client client)
{
CheckIfClientCanPerformPurchase(client);
Order order = new Order(client.Id, Money.Zero, OrderStatus.Draft);
Injector.InjectDependencies(order);
IRebatePolicy rebatePolicy = RebatePolicyFactory.CreateRebatePolicy();
order.SetRebatePolicy(rebatePolicy);
AddGratis(order, client);
return(order);
}
protected RebateDecorator(IRebatePolicy decorated)
{
Decorated = decorated;
}
public void IncreaseQuantity(int quantity, IRebatePolicy rebatePolicy)
{
Quantity += quantity;
Recalculate(rebatePolicy);
}
private bool HasAnyRebates(IRebatePolicy rebatePolicy)
{
return(rebatePolicy != null);
}
public void IncreaseQuantity(IRebatePolicy rebatePolicy)
{
Quantity++;
Recalculate(rebatePolicy);
}
public OrderLine(Product product, IRebatePolicy rebatePolicy)
{
Product = product;
Recalculate(rebatePolicy);
}
public OrderFactory(Customer customer, IRebatePolicy rebatePolicy)
{
_rebatePolicy = rebatePolicy;
_customer = customer;
}
