public bool Inspect(MatchedEventMap matchEvent)
{
var eventsPerStream = convertor.Invoke(matchEvent);
try {
var result = expression.Evaluate(eventsPerStream, true, quitable.Context.AgentInstanceContext);
if (result == null) {
return false;
}
if (true.Equals(result)) {
return true;
}
quitable.GuardQuit();
return false;
}
catch (EPRuntimeException ex) {
var message = "Failed to evaluate expression for pattern-guard for statement '" +
quitable.Context.AgentInstanceContext.StatementName +
"'";
if (ex.Message != null) {
message += ": " + ex.Message;
}
log.Error(message, ex);
throw new EPException(message);
}
}
public static object GetKeys(
MatchedEventMap matchEvent,
MatchedEventConvertor convertor,
ExprEvaluator expression,
AgentInstanceContext agentInstanceContext)
{
var eventsPerStream = convertor.Invoke(matchEvent);
return expression.Evaluate(eventsPerStream, true, agentInstanceContext);
}
public TimerScheduleSpec Compute(
MatchedEventConvertor optionalConvertor,
MatchedEventMap beginState,
ExprEvaluatorContext exprEvaluatorContext,
TimeZoneInfo timeZone,
TimeAbacus timeAbacus)
{
EventBean[] eventsPerStream = optionalConvertor == null ? null : optionalConvertor.Invoke(beginState);
return Compute(date, repetitions, timePeriod, eventsPerStream, exprEvaluatorContext, timeZone, timeAbacus);
}
public TimerScheduleSpec Compute(
MatchedEventConvertor optionalConvertor,
MatchedEventMap beginState,
ExprEvaluatorContext exprEvaluatorContext,
TimeZoneInfo timeZone,
TimeAbacus timeAbacus)
{
EventBean[] events = optionalConvertor == null ? null : optionalConvertor.Invoke(beginState);
return Compute(parameter, events, exprEvaluatorContext);
}
public EventObserver MakeObserver(
PatternAgentInstanceContext context,
MatchedEventMap beginState,
ObserverEventEvaluator observerEventEvaluator,
object observerState,
bool isFilterChildNonQuitting)
{
var events = convertor == null ? null : convertor.Invoke(beginState);
var filename = PatternExpressionUtil.EvaluateChecked(
"File-exists observer ",
filenameExpression,
events,
context.AgentInstanceContext);
if (filename == null) {
throw new EPException("Filename evaluated to null");
}
return new MyFileExistsObserver(beginState, observerEventEvaluator, filename.ToString());
}