public void AddCandles(ChartEntryEntity entry, DateTime from, DateTime to, Candle[] candles)
{
FetchHistories.RemoveRange(FetchHistories
.Where(
history => history.ChartEntry.Id == entry.Id &&
history.From >= from &&
history.To <= to));
FetchHistories.Add(new CandleFetchHistory()
{
ChartEntry = entry,
From = from,
To = to,
FetchCount = candles.Length
});
Candles.RemoveRange(Candles
.Where(
candle => candle.ChartEntry.Id == entry.Id &&
candle.Time >= from &&
candle.Time <= to));
Candles.AddRangeAsync(
candles.Select(candle => new CandleEntity()
{
ChartEntry = entry,
Time = candle.Time,
Open = candle.Open,
High = candle.High,
Low = candle.Low,
Close = candle.Close,
Volume = candle.Volume
}));
SaveChangesAsync();
}
public bool IsCacheAvailable(ChartEntryEntity entry, DateTime to, int takeCount)
{
return(FetchHistories.Where(fh => fh.ChartEntry.Id == entry.Id && fh.From <= to && fh.To >= to).Sum(fh => fh.FetchCount) >= takeCount);
}
public bool IsCacheAvailable(ChartEntryEntity entry, DateTime from, DateTime to)
{
return(FetchHistories.Where(fh => fh.ChartEntry.Id == entry.Id && fh.From <= from && fh.To >= to).Any());
}
