private IEnumerable <IDataPoint> ReadDataStream(TreeStream <HistorianKey, HistorianValue> stream)
{
HistorianKey key = new HistorianKey();
HistorianValue value = new HistorianValue();
List <ArchiveDataPoint> queriedData = new List <ArchiveDataPoint>();
ArchiveDataPoint point;
MeasurementStateFlags stateFlags;
while (stream.Read(key, value))
{
point = new ArchiveDataPoint((int)key.PointID);
point.Time = new TimeTag(new DateTime((long)key.Timestamp));
point.Value = BitConvert.ToSingle(value.Value1);
stateFlags = (MeasurementStateFlags)value.Value3;
if ((stateFlags & MeasurementStateFlags.BadData) == 0)
{
if ((stateFlags & MeasurementStateFlags.BadTime) == 0)
{
point.Quality = Quality.Good;
}
else
{
point.Quality = Quality.Old;
}
}
else
{
point.Quality = Quality.SuspectData;
}
queriedData.Add(point);
}
return(queriedData);
}