private void HandleEvent(
EventBean theEvent,
bool isNew)
{
var groupByValuesKey = GetGroupKey(theEvent);
// Get child views that belong to this group-by value combination
var subViews = subViewPerKey.Get(groupByValuesKey);
// If this is a new group-by value, the list of subviews is null and we need to make clone sub-views
if (subViews == null) {
var subview = GroupByViewUtil.MakeSubView(this, groupByValuesKey);
var currentTime = AgentInstanceContext.StatementContext.TimeProvider.Time;
subViews = new GroupByViewAgedEntry(subview, currentTime);
subViewPerKey.Put(groupByValuesKey, subViews);
}
else {
subViews.SetLastUpdateTime(AgentInstanceContext.StatementContext.TimeProvider.Time);
}
// Construct a pair of lists to hold the events for the grouped value if not already there
var pair = groupedEvents.Get(subViews);
if (pair == null) {
pair = new Pair<object, object>(null, null);
groupedEvents.Put(subViews, pair);
}
// Add event to a child view event list for later child update that includes new and old events
if (isNew) {
pair.First = GroupByViewImpl.AddUpgradeToDequeIfPopulated(pair.First, theEvent);
}
else {
pair.Second = GroupByViewImpl.AddUpgradeToDequeIfPopulated(pair.Second, theEvent);
}
}
