private ISpecification <Order> GetOrdersSpecification()
{
ISpecification <Order> specification = new ConjunctionSpecification <Order>(new OrderProductsAvailabilitySpecification(_productRepository),
new MaximumAmountOrdersToBeAcceptedSpecification(_orderRepository),
new CustomerIsDebtorSpecification()
);
return(specification);
}
// Assembling Spec contains Business Logic, therefore it may be moved to domain Building Block - OrderSpecificationFactory
private ISpecification <Order> GenerateSpecification(SystemUser systemUser)
{
ISpecification <Order> specification = new ConjunctionSpecification <Order>(
new DestinationSpecification(Locale.China), //.not(), // - do not send to China
new ItemsCountSpecification(100), //max 100 items
new DebtorSpecification() //not debts or max 1000 => debtors can buy for max 1000
.Or(new TotalCostSpecification(new Money(1000.0))));
//vip can buy some nice stuff
if (!IsVip(systemUser))
{
specification = specification.And(new RestrictedProductsSpecification());
}
return(specification);
}