public override void Submit(ref OrderState state)
{
//business rule: an order must has at least one order item
if (!_orderHeader.OrderItems.Any())
{
throw new InvalidOperationException("A new order must have at least one item before it can be submitted");
}
state = new OrderPending(_orderHeader);
}
public abstract void Reject(ref OrderState state);
public abstract void Complete(ref OrderState state);
public abstract void Submit(ref OrderState state);
public override void Submit(ref OrderState state)
{
throw new InvalidOperationException("A rejected can't be submitted");
}
public override void Reject(ref OrderState state)
{
throw new InvalidOperationException("This order is already rejected");
}
public override void Complete(ref OrderState state)
{
throw new InvalidOperationException("A reject order can't be completed");
}
public override void Reject(ref OrderState state)
{
throw new InvalidOperationException("A completed can't be rejected");
}
public override void Complete(ref OrderState state)
{
throw new InvalidOperationException("This order is already completed");
}
public override void Reject(ref OrderState state)
{
throw new InvalidOperationException("Order must be submitted (pending) before it can be rejected");
}
public override void Submit(ref OrderState state)
{
//NO-OP
}
public override void Reject(ref OrderState state)
{
state = new OrderRejected(_orderHeader);
}
public override void Complete(ref OrderState state)
{
state = new OrderComplete(_orderHeader);
}