private void process(String line)
{
String[] cmds = Regex.Split(line, "\\s+");
if (cmds.Length == 0)
{
return;
}
String command = cmds[0];
try
{
if (string.Compare("begin", command, true) == 0)
{
if (tx != null)
{
throw new System.InvalidOperationException("transaction " + tx + " is active");
}
tx = myWC.Start();
}
else if (string.Compare("commit", command, true) == 0)
{
if (tx == null)
{
throw new System.InvalidOperationException("no transaction is active");
}
myWC.Commit(tx);
tx = null;
}
else if (string.Compare("abort", command, true) == 0)
{
if (tx != null)
{
myWC.Abort(tx);
}
tx = null;
}
else if (string.Compare("cancel", command, true) == 0)
{
Customer c = cmds.Length == 2 ? new Customer(cmds[1]) : customer;
if (myWC.CancelItinerary(c))
{
Console.WriteLine("Itinierary for customer " + c + " has canceled");
}
else
{
Console.WriteLine("Failed to cancel itinerary for customer " + c);
}
}
else if (string.Compare("new", command, true) == 0)
{
if (customer != null)
{
Console.WriteLine("Old customer = " + customer);
}
if (cmds.Length == 2)
{
customer = new Customer(cmds[1]);
}
else
{
customer = new Customer();
}
Console.WriteLine("current customer = " + customer);
}
else if (string.Compare("print", command, true) == 0)
{
if (tx != null)
{
Console.WriteLine("Current transaction = " + tx);
}
if (customer != null)
{
Console.WriteLine("Current customer = " + customer);
}
}
else if (string.Compare("add", command, true) == 0)
{
if (tx == null)
{
throw new System.InvalidOperationException("no active transaction");
}
String target = cmds[1];
String loc = cmds[2];
int num = Int32.Parse(cmds[3]);
int price = Int32.Parse(cmds[4]);
if (string.Compare("car", target, true) == 0)
{
myWC.AddCars(tx, loc, num, price);
}
else if (string.Compare("seat", target, true) == 0)
{
myWC.AddSeats(tx, loc, num, price);
}
else if (string.Compare("room", target, true) == 0)
{
myWC.AddRooms(tx, loc, num, price);
}
else
{
throw new System.InvalidOperationException("usage: add (seat|car|room) loc qty price");
}
}
else if (string.Compare("del", command, true) == 0 || string.Compare("delete", command, true) == 0)
{
if (tx == null)
{
throw new System.InvalidOperationException("no active transaction");
}
String target = cmds[1];
String loc = cmds[2];
if (string.Compare("flight", target, true) == 0)
{
myWC.DeleteFlight(tx, loc);
}
else
{
int num = Int32.Parse(cmds[3]);
if (string.Compare("car", target, true) == 0)
{
myWC.DeleteCars(tx, loc, num);
}
else if (string.Compare("seat", target, true) == 0)
{
myWC.DeleteSeats(tx, loc, num);
}
else if (string.Compare("room", target, true) == 0)
{
myWC.DeleteRooms(tx, loc, num);
}
else
{
throw new System.InvalidOperationException("usage: " + command + " (seat|car|room) qty | flight");
}
}
}
else if (string.Compare("query", command, true) == 0)
{
if (tx == null)
{
throw new System.InvalidOperationException("no active transaction");
}
String target = cmds[1];
if (string.Compare("itinerary", (target), true) == 0 || string.Compare("i", (target), true) == 0)
{
Customer c = customer;
if (cmds.Length == 3)
{
c = new Customer(cmds[2]);
}
else if (c == null)
{
throw new System.InvalidOperationException("usage: query (itinerary|i) [customer]");
}
String result = myWC.QueryItinerary(tx, c);
Console.WriteLine("Itinerary for customer " + c);
Console.WriteLine(result);
}
else
{
String loc = cmds[2];
int avail = 0;
if (string.Compare("car", (target), true) == 0 || string.Compare("c", (target), true) == 0)
{
avail = myWC.QueryCar(tx, loc);
}
else if (string.Compare("flight", (target), true) == 0 || string.Compare("f", (target), true) == 0)
{
avail = myWC.QueryFlight(tx, loc);
}
else if (string.Compare("room", (target), true) == 0 || string.Compare("r", (target), true) == 0)
{
avail = myWC.QueryRoom(tx, loc);
}
else
{
throw new System.InvalidOperationException("usage: query (car|flight|room) loc");
}
Console.WriteLine(avail + " " + target + " are available at " + loc);
}
}
else if (string.Compare("price", (command), true) == 0)
{
if (tx == null)
{
throw new System.InvalidOperationException("no active transaction");
}
String target = cmds[1];
if (string.Compare("itinerary", (target), true) == 0 || string.Compare("i", (target), true) == 0)
{
Customer c = customer;
if (cmds.Length == 3)
{
c = new Customer(cmds[2]);
}
else if (c == null)
{
throw new System.InvalidOperationException("usage: price (itinerary|i) [customer]");
}
int total = myWC.QueryItineraryPrice(tx, c);
Console.WriteLine("Total price of itinerary for customer " + c + " = " + total);
}
else
{
String loc = cmds[2];
int avail = 0;
if (string.Compare("car", (target), true) == 0 || string.Compare("c", (target), true) == 0)
{
avail = myWC.QueryCarPrice(tx, loc);
}
else if (string.Compare("flight", (target), true) == 0 || string.Compare("f", (target), true) == 0)
{
avail = myWC.QueryFlightPrice(tx, loc);
}
else if (string.Compare("room", (target), true) == 0 || string.Compare("r", (target), true) == 0)
{
avail = myWC.QueryRoomPrice(tx, loc);
}
else
{
throw new System.InvalidOperationException("usage: price (car|flight|room) loc");
}
Console.WriteLine("price to reserve " + target + " at " + loc + " = " + avail);
}
}
else if (string.Compare("list", (command), true) == 0)
{
if (tx == null)
{
throw new System.InvalidOperationException("no active transaction");
}
String target = cmds[1];
if (string.Compare("customer", (target), true) == 0)
{
Customer[] customers = myWC.ListCustomers(tx);
Console.WriteLine(customers.Length + " customers exist");
foreach (Customer c in customers)
{
Console.WriteLine(c);
}
}
else
{
String[] result = new String[0];
if (string.Compare("car", (target), true) == 0)
{
result = myWC.ListCars(tx);
}
else if (string.Compare("flight", (target), true) == 0)
{
result = myWC.ListFlights(tx);
}
else if (string.Compare("room", (target), true) == 0)
{
result = myWC.ListRooms(tx);
}
else
{
throw new System.InvalidOperationException("usage: list (car|flight|room|customer)");
}
Console.WriteLine(result.Length + " items exist");
foreach (String e in result)
{
Console.WriteLine(e);
}
}
}
else if (string.Compare("reserve", (command), true) == 0)
{
if (cmds.Length < 5)
{
throw new System.InvalidOperationException("usage: reserve flight1 ... flightN location bookCar bookRoom");
}
if (customer == null)
{
throw new System.InvalidOperationException("no customer was set.");
}
String[] flights = new String[cmds.Length - 3 - 1];
Array.Copy(cmds, 1, flights, 0, cmds.Length - 3 - 1);
String loc = cmds[cmds.Length - 3];
bool bcar = parseBoolean(cmds[cmds.Length - 2]);
bool broom = parseBoolean(cmds[cmds.Length - 1]);
if (myWC.ReserveItinerary(customer, flights, loc, bcar, broom))
{
Console.WriteLine("reserved the itinerary for customer " + customer);
}
else
{
Console.WriteLine("Failed to reserve the itinerary for customer " + customer);
}
}
else if (string.Compare("help", command, true) == 0 || command.CompareTo("?") == 0)
{
PrintHelp();
}
else if (string.Compare("exit", (command), true) == 0 || string.Compare("quit", (command), true) == 0)
{
try
{
if (tx != null)
{
myWC.Abort(tx);
}
}
catch (Exception) { }
}
else
{
throw new System.InvalidOperationException("unknown command: " + command);
}
}
catch (InvalidOperationException x)
{
Console.WriteLine(x.ToString());
}
catch (Exception x)
{
Console.WriteLine(x.ToString());
}
}