public IEnumerable <RangeEntry> ScanRanges(DateTime start, DateTime end, string[] ids)
{
if (ids == null || ids.Length == 0)
{
yield break;
}
var pending = new PendingEnumerators();
for (int i = 0; i < ids.Length; i++)
{
var enumerator = ScanRange(start, end, ids[i]).GetEnumerator();
if (enumerator.MoveNext() == false)
{
continue;
}
pending.Enqueue(new PendingEnumerator
{
Enumerator = enumerator,
Index = i
});
}
var result = new RangeEntry
{
Values = new double?[ids.Length]
};
while (pending.IsEmpty == false)
{
Array.Clear(result.Values, 0, result.Values.Length);
var entries = pending.Dequeue();
if (entries.Count == 0)
{
break;
}
foreach (var entry in entries)
{
var current = entry.Enumerator.Current;
result.Timestamp = current.Timestamp;
result.Values[entry.Index] = current.Value;
if (entry.Enumerator.MoveNext())
{
pending.Enqueue(entry);
}
}
yield return(result);
}
}
public IEnumerable<RangeEntry> ScanRanges(DateTime start, DateTime end, string[] ids)
{
if (ids == null || ids.Length == 0)
yield break;
var pending = new PendingEnumerators();
for (int i = 0; i < ids.Length; i++)
{
var enumerator = ScanRange(start, end, ids[i]).GetEnumerator();
if(enumerator.MoveNext() == false)
continue;
pending.Enqueue(new PendingEnumerator
{
Enumerator = enumerator,
Index = i
});
}
var result = new RangeEntry
{
Values = new double?[ids.Length]
};
while (pending.IsEmpty == false)
{
Array.Clear(result.Values,0,result.Values.Length);
var entries = pending.Dequeue();
if (entries.Count == 0)
break;
foreach (var entry in entries)
{
var current = entry.Enumerator.Current;
result.Timestamp = current.Timestamp;
result.Values[entry.Index] = current.Value;
if(entry.Enumerator.MoveNext())
pending.Enqueue(entry);
}
yield return result;
}
}
