private StockHandle FindStock(StockDescriptor stockDescriptor)
{
using (var tom = Engine.ServiceProvider.CreateEntityRepository())
{
var tradedStock = tom.TradedStocks.FindTradedStockByDescription(stockDescriptor);
if (tradedStock != null)
{
return(new StockHandle(tradedStock));
}
var creator = new StockCreator();
return(creator.Create(stockDescriptor));
}
}
public static TradedStock FindTradedStockByDescription(this IObjectSet <TradedStock> tradedStocks, StockDescriptor stockDescriptor)
{
// TODO: shouldnt we use single here?
var tradedStock = tradedStocks
.Where(ts => ts.Stock.Isin == stockDescriptor.Isin)
.FirstOrDefault(ts => ts.StockExchange.Symbol == stockDescriptor.StockExchange || ts.StockExchange.Name == stockDescriptor.StockExchange);
return(tradedStock);
}
// TODO: dublicate of Functions.Stocks.GetOrCreateStock() but we first need some
// kind of protocol (for user and developer) before we can remove this code here
public StockHandle Create(StockDescriptor stockDescriptor)
{
if (stockDescriptor.Isin.IsNullOrTrimmedEmpty())
{
throw new ArgumentException("Isin not set");
}
if (stockDescriptor.StockExchange.IsNullOrTrimmedEmpty())
{
throw new ArgumentException("Stock exchange not set");
}
myLogger.Notice("Creating stock: {0}", stockDescriptor.Isin);
using (var tom = Engine.ServiceProvider.CreateEntityRepository())
{
var tradedStock = tom.TradedStocks.FindTradedStockByDescription(stockDescriptor);
if (tradedStock != null)
{
var sh = new StockHandle(tradedStock);
myLogger.Info("Stock already exists: Company = {0},Isin = {1}, Symbol = {2}, Exchange = {3}",
sh.Company.Name, stockDescriptor.Isin, sh.TradedStock.Symbol, stockDescriptor.StockExchange);
return(sh);
}
// TODO: this is somehow duplicate code from StockHandle.GetOrCreate - remove StockHandle.GetOrCreate
// ok - so no traded stock available for the given description - but maybe a stock is already there?
var stock = tom.Stocks.FirstOrDefault(s => s.Isin == stockDescriptor.Isin);
if (stock == null)
{
var companyName = stockDescriptor.Name;
if (companyName.IsNullOrTrimmedEmpty())
{
companyName = DatumLocatorDefinitions.Standing.CompanyName.FetchSingle <string>(stockDescriptor.Isin).Value;
}
// company name is not uniq enough so lets create a new one
var company = new Company(companyName);
stock = new Stock(company, stockDescriptor.Isin);
}
// we got a stock so lets create a traded stock - we already checked that there is none
// but first we need a stockexchange
var se = tom.StockExchanges.FindBySymbolOrName(stockDescriptor.StockExchange);
if (se == null)
{
throw new InvalidOperationException("Could not find StockExchange by symbol or name with: " + stockDescriptor.StockExchange);
}
var symbol = stockDescriptor.Symbol;
if (symbol.IsNullOrTrimmedEmpty())
{
symbol = DatumLocatorDefinitions.Standing.StockSymbol.FetchSingle <string>(stockDescriptor.Isin).Value;
}
var wpkn = DatumLocatorDefinitions.Standing.Wpkn.FetchSingle <string>(stockDescriptor.Isin).Value;
tradedStock = new TradedStock(stock, se);
tradedStock.Symbol = symbol;
tradedStock.Wpkn = wpkn;
tom.TradedStocks.AddObject(tradedStock);
tom.SaveChanges();
myLogger.Info("Created stock with: Company = {0},Isin = {1}, Symbol = {2}, Exchange = {3}",
stock.Company.Name, stock.Isin, symbol, stockDescriptor.StockExchange);
return(new StockHandle(tradedStock));
}
}
public void Add(StockDescriptor stockDescriptor)
{
var stock = FindStock(stockDescriptor);
Add(stock);
}
