public virtual void Transfer(DateTime uptil, Granularity interval)
{
using (var tx = buckets.BeginTransaction())
{
var slotEndTime = uptil.GetSlot(interval, endOfSlot: true);
var collectedBuckets = buckets.Find().Where(b => b.TimeSlot < slotEndTime).OrderBy(b => b.TimeSlot).ToArray();
if (collectedBuckets.Length == 0)
{
return;
}
ClearBuckets(collectedBuckets);
var start = collectedBuckets[0].TimeSlot;
var pageViews = collectedBuckets
.GroupBy(b => new KeyValuePair <DateTime, int>(b.TimeSlot.GetSlot(interval), b.PageID), b => b.Views)
.ToDictionary(b => b.Key, b => b.Sum());
var existingStatistics = IncrementExistingStatistics(uptil, interval, start, pageViews);
var addedStatistics = InsertNewStatistics(pageViews);
tx.Commit();
logger.InfoFormat("Transferred {0} buckets into {1} new and {2} updated statistics", collectedBuckets.Length, addedStatistics.Count, existingStatistics.Count);
}
}
private List <Statistic> IncrementExistingStatistics(DateTime uptil, Granularity interval, DateTime start, Dictionary <KeyValuePair <DateTime, int>, int> pageViews)
{
var existingStatistics = statistics.Find(Parameter.GreaterOrEqual("TimeSlot", start) & Parameter.LessThan("TimeSlot", uptil)).ToList();
foreach (var s in existingStatistics)
{
var key = new KeyValuePair <DateTime, int>(s.TimeSlot.GetSlot(interval), s.PageID);
if (!pageViews.ContainsKey(key))
{
continue;
}
s.Views += pageViews[key];
pageViews.Remove(key);
}
statistics.SaveOrUpdate(existingStatistics);
statistics.Flush();
return(existingStatistics);
}