public StockHandle(TradedStock ts)
{
myHandle = ts;
// TODO: have two factory methods? one to load on demand the other to create in memory?
// the object context of the given traded stock will be disposed later on.
// then we cannot access any property which requires the object context - e.g.
// references that has not been loaded yet
// - only check if attached to object context
if (myHandle.EntityState == System.Data.EntityState.Unchanged || myHandle.EntityState == System.Data.EntityState.Modified)
{
if (myHandle.Stock == null)
{
myHandle.StockReference.Load();
}
if (myHandle.StockExchange == null)
{
myHandle.StockExchangeReference.Load();
}
if (myHandle.StockExchange.Currency == null)
{
myHandle.StockExchange.CurrencyReference.Load();
}
if (myHandle.Stock.Company == null)
{
myHandle.Stock.CompanyReference.Load();
}
}
}
public static StockHandle CreateStockHandle( string companyName, string isin, string currency )
{
var company = new Company( companyName );
var stock = new Stock( company, isin );
var exchange = new StockExchange( "Xetra", "DE", new Currency( currency, currency ) );
var tradedStock = new TradedStock( stock, exchange );
return new StockHandle( tradedStock );
}
public StockPrice(TradedStock ts, DateTime date, double?open, double?high, double?low, double close, long?volume)
{
TradedStock = ts;
Date = date;
Open = open;
High = high;
Low = low;
Close = close;
Volume = volume;
}
private void AddStock()
{
var stock = new Stock();
stock.Isin = myIsinTxt.Text;
stock.Company = new Company();
stock.Company.Name = myCompanyNameTxt.Text;
var tradedStock = new TradedStock( stock, myTom.StockExchanges.First( se => se.Symbol == "F" ) );
tradedStock.Symbol = mySymbolTxt.Text;
tradedStock.Wpkn = myWpknTxt.Text;
myTom.Stocks.AddObject( stock );
}
public Order( TradedStock code, string source )
{
Source = source;
TradedStock = code;
}
public Order( TradedStock code )
: this(code, null)
{
}
protected void AddDummyStock(string isin)
{
var company = new Company( "C" );
var stock = new Stock( company, isin );
var exchange = new StockExchange( "Xetra", "De", new Currency( "Euro", "Euro" ) );
var tradedStock = new TradedStock( stock, exchange );
Interpreter.Context.Scope.Stock = new StockHandle( tradedStock );
}
public Order(TradedStock code, string source)
{
Source = source;
TradedStock = code;
}
public Order(TradedStock code)
: this(code, null)
{
}
public StockPrice(long id, TradedStock ts, DateTime date, double?open, double?high, double?low, double close, long?volume)
: this(ts, date, open, high, low, close, volume)
{
Id = id;
}
/// <summary>
/// Deprecated Method for adding a new object to the TradedStocks EntitySet. Consider using the .Add method of the associated ObjectSet<T> property instead.
/// </summary>
public void AddToTradedStocks(TradedStock tradedStock)
{
base.AddObject("TradedStocks", tradedStock);
}
/// <summary>
/// Create a new TradedStock object.
/// </summary>
/// <param name="id">Initial value of the Id property.</param>
/// <param name="symbol">Initial value of the Symbol property.</param>
public static TradedStock CreateTradedStock(global::System.Int64 id, global::System.String symbol)
{
TradedStock tradedStock = new TradedStock();
tradedStock.Id = id;
tradedStock.Symbol = symbol;
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 );
}
}
private static StockHandle GetOrCreateInternal <TPolicy>(Dictionary <string, string> args_in) where TPolicy : IScalarPolicy, new()
{
var args = args_in.ToDictionary(pair => pair.Key.ToLower(), pair => pair.Value);
var GetPolicy = NMemorize.Cache(() => new TPolicy());
using (var tom = Engine.ServiceProvider.CreateEntityRepository())
{
// lets try to find s.th. in DB first
IEnumerable <TradedStock> tradedStocks = null;
if (args.ContainsKey("isin"))
{
tradedStocks = tom.TradedStocks.FindByIsin(args["isin"]);
}
if (tradedStocks == null && args.ContainsKey("wpkn"))
{
tradedStocks = tom.TradedStocks.FindByWpkn(args["wpkn"]);
}
if (tradedStocks == null && args.ContainsKey("symbol"))
{
tradedStocks = tom.TradedStocks.FindBySymbol(args["symbol"]);
}
if (tradedStocks != null && tradedStocks.Any())
{
// always filter so that we can check wether all given
// parameters fit well
var filteredTradedStocks = tradedStocks.Where(ts =>
(!args.ContainsKey("wpkn") || ts.Wpkn == args["wpkn"]) &&
(!args.ContainsKey("symbol") || ts.Symbol == args["symbol"]));
if (filteredTradedStocks.Any())
{
return(new StockHandle(GetPolicy().Single(filteredTradedStocks)));
}
}
// ok we did not find anything so lets create a new stock
// check required keys
if (!args.ContainsKey("isin"))
{
throw new ArgumentException("Isin required when creating new stocks");
}
if (!args.ContainsKey("symbol"))
{
throw new ArgumentException("Symbol required when creating new stocks");
}
if (!(args.ContainsKey("exchange") || args.ContainsKey("stockexchange")))
{
throw new ArgumentException("Exchange/StockExchange required when creating new stocks");
}
if (!(args.ContainsKey("name") || args.ContainsKey("companyname")))
{
throw new ArgumentException("Name/CompanyName required when creating new stocks");
}
var companyName = GetOrDefault(args, "name") ?? GetOrDefault(args, "companyname");
var company = tom.Companies.GetOrCreate <TPolicy>(companyName);
var stock = new Stock(company, args["isin"]);
tom.Stocks.AddObject(stock);
var exchange = GetOrDefault(args, "exchange") ?? GetOrDefault(args, "stockexchange");
var se = tom.StockExchanges.FindBySymbolOrName(exchange);
if (se == null)
{
throw new InvalidOperationException("Could not find StockExchange by symbol or name with: " + exchange);
}
var tradedStock = new TradedStock(stock, se)
{
Wpkn = GetOrDefault(args, "wpkn"),
Symbol = GetOrDefault(args, "symbol")
};
tom.TradedStocks.AddObject(tradedStock);
tom.SaveChanges();
return(new StockHandle(tradedStock));
}
}