public override Aggregates GetAggregates(long tStart, long tEnd)
{
var agg = new Aggregates();
agg.First = agg.Last = agg.Min = agg.Max = agg.Average = value;
agg.Total = value*(tEnd - tStart);
return agg;
}
internal Aggregates GetAggregates(long tStart, long tEnd)
{
var agg = new Aggregates();
long totalSeconds = 0;
bool firstFound = false;
for (int i = 0; i < timestamps.Length; i++)
{
long left = Math.Max(timestamps[i] - step, tStart);
long right = Math.Min(timestamps[i], tEnd);
long delta = right - left;
// delta is only > 0 when the timestamp for a given buck is within the range of tStart and tEnd
if (delta > 0)
{
double value = values[i];
agg.Min = Util.Min(agg.Min, value);
agg.Max = Util.Max(agg.Max, value);
if (!firstFound)
{
agg.First = value;
firstFound = true;
agg.Last = value;
}
else if (delta >= step)
{
// an entire bucket is included in this range
agg.Last = value;
/*
* Algorithmically, we're only updating last if it's either the first
* bucket encountered, or it's a "full" bucket.
if ( !isInRange(tEnd, left, right) ||
(isInRange(tEnd, left, right) && !Double.isNaN(value))
) {
agg.last = value;
}
*/
}
if (!Double.IsNaN(value))
{
agg.Total = Util.Sum(agg.Total, delta*value);
totalSeconds += delta;
}
}
}
agg.Average = totalSeconds > 0 ? (agg.Total/totalSeconds) : Double.NaN;
return agg;
}
