public override void Update(EventBean[] newData, EventBean[] oldData)
{
using (Instrument.With(
i => i.QViewProcessIRStream(this, _factory.ViewName, newData, oldData),
i => i.AViewProcessIRStream()))
{
if ((newData != null) && (newData.Length > 0))
{
// If we have an empty window about to be filled for the first time, add a callback
bool removeSchedule = false;
bool addSchedule = false;
long timestamp = _agentInstanceContext.StatementContext.SchedulingService.Time;
// if the window is already filled, then we may need to reschedule
if (_currentBatch.IsNotEmpty())
{
// check if we need to reschedule
long callbackTime = timestamp + _timeDeltaComputation.DeltaMillisecondsAdd(timestamp);
if (callbackTime != _callbackScheduledTime)
{
removeSchedule = true;
addSchedule = true;
}
}
else
{
addSchedule = true;
}
if (removeSchedule)
{
_agentInstanceContext.StatementContext.SchedulingService.Remove(_handle, _scheduleSlot);
_callbackScheduledTime = -1;
}
if (addSchedule)
{
long msecIntervalSize = _timeDeltaComputation.DeltaMillisecondsAdd(timestamp);
_agentInstanceContext.StatementContext.SchedulingService.Add(
msecIntervalSize, _handle, _scheduleSlot);
_callbackScheduledTime = msecIntervalSize + timestamp;
}
// add data points to the window
for (int i = 0; i < newData.Length; i++)
{
_currentBatch.Put(newData[i], timestamp);
InternalHandleAdded(newData[i], timestamp);
_lastEvent = newData[i];
}
}
if ((oldData != null) && (oldData.Length > 0))
{
bool removedLastEvent = false;
foreach (EventBean anOldData in oldData)
{
_currentBatch.Remove(anOldData);
InternalHandleRemoved(anOldData);
if (anOldData == _lastEvent)
{
removedLastEvent = true;
}
}
// we may need to reschedule as the newest event may have been deleted
if (_currentBatch.Count == 0)
{
_agentInstanceContext.StatementContext.SchedulingService.Remove(_handle, _scheduleSlot);
_callbackScheduledTime = -1;
_lastEvent = null;
}
else
{
// reschedule if the last event was removed
if (removedLastEvent)
{
ICollection <EventBean> keyset = _currentBatch.Keys;
EventBean[] events = keyset.ToArray();
_lastEvent = events[events.Length - 1];
long lastTimestamp = _currentBatch.Get(_lastEvent);
// reschedule, newest event deleted
long timestamp = _agentInstanceContext.StatementContext.SchedulingService.Time;
long callbackTime = lastTimestamp + _timeDeltaComputation.DeltaMillisecondsAdd(lastTimestamp);
long deltaFromNow = callbackTime - timestamp;
if (callbackTime != _callbackScheduledTime)
{
_agentInstanceContext.StatementContext.SchedulingService.Remove(_handle, _scheduleSlot);
_agentInstanceContext.StatementContext.SchedulingService.Add(
deltaFromNow, _handle, _scheduleSlot);
_callbackScheduledTime = callbackTime;
}
}
}
}
// Update child views
if (HasViews)
{
using (Instrument.With(
i => i.QViewIndicate(this, _factory.ViewName, newData, oldData),
i => i.AViewIndicate()))
{
UpdateChildren(newData, oldData);
}
}
}
}
