public static StockQuote CreateStockQuote(Exchange exchange, string symbol)
{
StockQuote stockQuote = new StockQuote();
stockQuote.SetExchange(exchange.ToString());
stockQuote.SetSymbol(symbol);
return(stockQuote);
}
public StockQuote Add(StockQuote stockQuote)
{
if (stockQuote == null)
{
throw new ArgumentNullException("Null stockQuote received for Add");
}
string id = Utilities.CreateStockQuoteIdentifier(stockQuote);
StockQuote existingStockQuote = stockQuotes.Find((sq) => sq.GetIdentifier() == id);
if (existingStockQuote != null)
{
stockQuotes.Remove(existingStockQuote);
}
stockQuotes.Add(stockQuote);
return(stockQuote);
}
public bool Update(StockQuote stockQuote)
{
if (stockQuote == null)
{
throw new ArgumentNullException("Null stockQuote received for Update");
}
int i = stockQuotes.FindIndex(sq => sq.GetIdentifier() == stockQuote.GetIdentifier());
if (i == -1)
{
return(false);
}
stockQuotes.RemoveAt(i);
stockQuotes.Add(stockQuote);
return(true);
}
public StockQuoteMemoryStore()
{
StockQuote stockQuote = Utilities.CreateStockQuote(Exchange.NASDAQ, "AAPL");
stockQuote.SetIdentifier(Utilities.CreateStockQuoteIdentifier(stockQuote));
Add(stockQuote);
stockQuote = Utilities.CreateStockQuote(Exchange.NASDAQ, "GOOG");
stockQuote.SetIdentifier(Utilities.CreateStockQuoteIdentifier(stockQuote));
Add(stockQuote);
stockQuote = Utilities.CreateStockQuote(Exchange.NASDAQ, "NFLX");
stockQuote.SetIdentifier(Utilities.CreateStockQuoteIdentifier(stockQuote));
Add(stockQuote);
stockQuote = Utilities.CreateStockQuote(Exchange.NYSE, "IBM");
stockQuote.SetIdentifier(Utilities.CreateStockQuoteIdentifier(stockQuote));
Add(stockQuote);
stockQuote = Utilities.CreateStockQuote(Exchange.NYSE, "BWA");
stockQuote.SetIdentifier(Utilities.CreateStockQuoteIdentifier(stockQuote));
Add(stockQuote);
}
public static string CreateStockQuoteIdentifier(StockQuote stockQuote)
{
return(CreateStockQuoteIdentifier(stockQuote.GetExchange().ToString(),
stockQuote.GetSymbol()));
}
