public override InfraOnExprBaseViewResult MakeNamedWindow(
SubordWMatchExprLookupStrategy lookupStrategy,
NamedWindowRootViewInstance namedWindowRootViewInstance,
AgentInstanceContext agentInstanceContext)
{
var pair = StatementAgentInstanceFactoryUtil.StartResultSetAndAggregation(
resultSetProcessorPrototype,
agentInstanceContext,
false,
null);
var audit = AuditEnum.INSERT.GetAudit(agentInstanceContext.Annotations) != null;
TableInstance tableInstanceInsertInto = null;
if (optionalInsertIntoTable != null) {
tableInstanceInsertInto =
optionalInsertIntoTable.GetTableInstance(agentInstanceContext.AgentInstanceId);
}
var selectView = new OnExprViewNamedWindowSelect(
lookupStrategy,
namedWindowRootViewInstance,
agentInstanceContext,
this,
pair.First,
audit,
IsSelectAndDelete,
tableInstanceInsertInto);
return new InfraOnExprBaseViewResult(selectView, pair.Second);
}
public override void HandleMatching(
EventBean[] triggerEvents,
EventBean[] matchingEvents)
{
agentInstanceContext.InstrumentationProvider.QInfraOnAction(
OnTriggerType.ON_SELECT,
triggerEvents,
matchingEvents);
// clear state from prior results
resultSetProcessor.Clear();
// build join result
// use linked hash set to retain order of join results for last/first/window to work most intuitively
ISet<MultiKeyArrayOfKeys<EventBean>> newEvents =
OnExprViewNamedWindowSelect.BuildJoinResult(triggerEvents, matchingEvents);
// process matches
UniformPair<EventBean[]> pair = resultSetProcessor.ProcessJoinResult(
newEvents,
Collections.GetEmptySet<MultiKeyArrayOfKeys<EventBean>>(),
false);
EventBean[] newData = pair?.First;
// handle distinct and insert
newData = InfraOnSelectUtil.HandleDistintAndInsert(
newData,
parent,
agentInstanceContext,
tableInstanceInsertInto,
audit);
// The on-select listeners receive the events selected
if ((newData != null) && (newData.Length > 0)) {
// And post only if we have listeners/subscribers that need the data
StatementResultService statementResultService = agentInstanceContext.StatementResultService;
if (statementResultService.IsMakeNatural || statementResultService.IsMakeSynthetic) {
Child.Update(newData, null);
}
}
// clear state from prior results
resultSetProcessor.Clear();
// Events to delete are indicated via old data
if (deleteAndSelect) {
foreach (EventBean @event in matchingEvents) {
tableInstance.DeleteEvent(@event);
}
}
agentInstanceContext.InstrumentationProvider.AInfraOnAction();
}