public override Bars RequestData(DataSource ds, string symbol, DateTime startDate, DateTime endDate, int maxBars, bool includePartialBar)
{
Bars bars = new Bars(symbol, ds.Scale, ds.BarInterval);
List <SymbolDescription> symbolDescriptions = SymbolDescription.DeserializeList(ds.DSString);
SymbolDescription description = symbolDescriptions.Find(x => x.FullCode == symbol);
if (description != null && OnDemandUpdate)
{
_dataStore.LoadBarsObject(bars);
DateTime currentDate = DateTime.Now;
try
{
string suffix = GetSuffix(ds.BarDataScale);
int correction = 0;
bars.AppendWithCorrections(GetHistory(ds.BarDataScale, description.FullCode, suffix), out correction);
}
catch (Exception exception)
{
logger.Error(exception);
MessageBox.Show(string.Format("[{0}] {1}", symbol, exception.Message), "Внимание! Произошла ошибка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
if (bars.Count > 0 && bars.Date[bars.Count - 1] > currentDate && !includePartialBar)
{
bars.Delete(bars.Count - 1);
}
if (!base.IsStreamingRequest)
{
lock (_locker)
_dataStore.SaveBarsObject(bars);
}
}
else
{
_dataStore.LoadBarsObject(bars, startDate, endDate, maxBars);
}
return(bars);
}
