public static ISet<MultiKeyArrayOfKeys<EventBean>> ToSingletonSetIfNotNull(MultiKeyArrayOfKeys<EventBean> row)
{
if (row == null) {
return null;
}
return Collections.SingletonSet(row);
}
public UniformPair<EventBean[]> OutputJoin(bool isSynthesize)
{
if (outputLastIStreamBufJoin == null && outputLastRStreamBufJoin == null) {
return null;
}
var pair = processor.ProcessJoinResult(
EventBeanUtility.ToSingletonSetIfNotNull(outputLastIStreamBufJoin),
EventBeanUtility.ToSingletonSetIfNotNull(outputLastRStreamBufJoin),
isSynthesize);
outputLastIStreamBufJoin = null;
outputLastRStreamBufJoin = null;
return pair;
}
public void ProcessJoin(
ISet<MultiKeyArrayOfKeys<EventBean>> newEvents,
ISet<MultiKeyArrayOfKeys<EventBean>> oldEvents)
{
if (!processor.HasHavingClause) {
if (newEvents != null && !newEvents.IsEmpty()) {
outputLastIStreamBufJoin = EventBeanUtility.GetLastInSet(newEvents);
}
if (oldEvents != null && !oldEvents.IsEmpty()) {
outputLastRStreamBufJoin = EventBeanUtility.GetLastInSet(oldEvents);
}
}
else {
if (newEvents != null && newEvents.Count > 0) {
foreach (var theEvent in newEvents) {
var passesHaving = processor.EvaluateHavingClause(
theEvent.Array,
true,
processor.GetAgentInstanceContext());
if (!passesHaving) {
continue;
}
outputLastIStreamBufJoin = theEvent;
}
}
if (oldEvents != null && oldEvents.Count > 0) {
foreach (var theEvent in oldEvents) {
var passesHaving = processor.EvaluateHavingClause(
theEvent.Array,
false,
processor.GetAgentInstanceContext());
if (!passesHaving) {
continue;
}
outputLastRStreamBufJoin = theEvent;
}
}
}
}
