/// <summary>
/// Creates a new empty TimeSeriesStreamCollection object. It initializes an underlying MemoryStream and
/// inits it with default values for all TimeSeries (one for each given key is created). Every write access
/// to any TimeSeries will then be in-place on the already allocated buffer with the fixed size of
/// keys.Count * bucketCount.
/// </summary>
public TimeSeriesStreamCollection(IEnumerable <TKey> keys, int keySize, Action <TKey, Stream> writeKeyAction, TimeSeriesSpan span, int decimalPlaces = 1) : base()
{
var keyList = keys.ToList();
Metrics = new BinaryStreamMetrics(keySize, span.Count, decimalPlaces);
_stream = new CompressableMemoryStream(Metrics.StreamSize(keyList.Count));
_stream.SetLength(Metrics.StreamSize(keyList.Count));
using (var writer = new BinaryWriter(_stream, System.Text.Encoding.UTF8, true))
writer.Write(keyList.Count);
foreach (var i in Enumerable.Range(0, keyList.Count))
{
writeKeyAction(keyList[i], _stream);
var timeseries = new TimeSeriesStream <T>(_stream, Metrics.TimeseriesPosition(i), span, decimalPlaces);
foreach (var item in timeseries)
{
timeseries[item.Key] = null;
}
_dict.Add(keyList[i], timeseries);
}
}
