//Calculates the unit price for a book with current market conditions
public double calcPrice(OrderObject o)
{
//Base setting for output to keep final price calculation within 50 to 200
double unitPrice = 0;
//Check to see if any orders are older than the reference timespan
Int32 count = 0; //Counts number of OrderObjects that are relatively too old to include in price calculation
foreach (OrderObject order in orders)
{
if (o.getTimestamp() - order.getTimestamp() > reference)
{
count++;
}
}
//Deqeue the older OrderObjects
while (count != 0)
{
orders.Dequeue();
count--;
}
orders.Enqueue(o); //Put new order in the queue
setNumOrders(); //Set the appropriate number of recent orders
unitPrice += this.getUnitPrice();
return(unitPrice);
}
/// <summary>
/// Testing method for the encoder and decode functions.
/// </summary>
public static void EncodeDecodeTest()
{
DateTime now = new DateTime();
Publisher p = new Publisher(1);
Random rdm = new Random();
Bookstore bookstore = new Bookstore(1);
for (int i = 0; i < 20; i++)
{
now = DateTime.Now;
OrderObject o = new OrderObject
(
i, //senderId
(Int32)(rdm.NextDouble() * 10000), //cardNo
i, //receiverId
(Int32)(rdm.NextDouble() * 200), //amount
(Int32)(rdm.NextDouble() * 100), //unitPrice
now, //timestamp,
DateTime.Now.Millisecond
);
string str = bookstore.Encoder(o);
Console.WriteLine("The OrderObject's actual contents were: " + o.getBookStoreId() + "," + o.getCardNo().ToString() + ","
+ o.getPublisherId() + "," + o.getAmount().ToString() + "," + o.getUnitPrice().ToString() + "," + o.getTimestamp().ToString());
Console.WriteLine("The string created by the encoder was: " + str);
o = p.getDecoder().decode(str);
Console.WriteLine("The Decoder created another OrderObject from the string created by the encoder whose contents were: \n"
+ o.getBookStoreId() + "," + o.getCardNo().ToString() + ","
+ o.getPublisherId() + "," + o.getAmount().ToString() + ","
+ o.getUnitPrice().ToString() + "," + o.getTimestamp().ToString() + "\n");
System.Threading.Thread.Sleep(50);
}
}
// Encoder -- turns OrderObject into a CSV string
public String Encoder(OrderObject order)
{
String orderStr = null;
// build CSV String
orderStr = order.getBookStoreId().ToString();;
orderStr += "," + order.getCardNo().ToString();
orderStr += "," + order.getPublisherId().ToString();
orderStr += "," + order.getAmount().ToString();
orderStr += "," + order.getUnitPrice().ToString();
orderStr += "," + order.getTimestamp();
orderStr += "," + order.getTicks().ToString();
return(orderStr); // return the encoded string just created.
}