public TicketReservation GetReservationWith(Guid reservationId)
{
if (!HasReservationWith(reservationId))
{
throw new ApplicationException(String.Format("No reservation ticket with matching id of ‘{0}’", reservationId.ToString()));
}
return(ReservedTickets.FirstOrDefault(t => t.Id == reservationId));
}
public int AvailableAllocation()
{
int salesAndReservations = 0;
PurchasedTickets.ForEach(t => salesAndReservations += t.TicketQuantity);
ReservedTickets.FindAll(r => r.StillActive()).ForEach(r => salesAndReservations += r.TicketQuantity);
return(Allocation - salesAndReservations);
}
public TicketReservation ReserveTicket(int tktQty)
{
if (!CanReserveTicket(tktQty))
{
ThrowExceptionWithDetailsOnWhyTicketsCannotBeReserved();
}
TicketReservation reservation = TicketReservationFactory.CreateReservation(this, tktQty);
ReservedTickets.Add(reservation);
return(reservation);
}
/// <summary>
/// 获取可以用的票务量
/// </summary>
/// <returns></returns>
public int AvailableAllocation()
{
//卖掉及预定的数量
int salesAndReservations = 0;
//遍历购票集合，修改预定及卖掉的票的数量
PurchasedTickets.ForEach(t => salesAndReservations += t.TicketQuantity);
//遍历预定票集合中依然活跃属性，并修改预定及卖掉票的数量
ReservedTickets.FindAll(r => r.StillActive()).ForEach(r => salesAndReservations += r.TicketQuantity);
//返回可用票量
return(Allocation - salesAndReservations);
}
private bool HasReservationWith(Guid reservationId)
{
return(ReservedTickets.Exists(t => t.Id == reservationId));
}