Esper Externally-timed view failed with time stamp ?

Question

So I need to compute events using esper with event time not the esper engine time.So first i have disable esper engine time and do the configuration.

esperServiceProvider = EPServiceProviderManager.getProvider("esperEventEngine", esperConfig); 
           esperConfig.getEngineDefaults().getThreading().setInternalTimerEnabled(false);

And then using this esper EQL i want to trigger event.In my event i have field called private Date eventDateTime; The this is the EQL

select * from event.win:ext_timed(eventDateTime,20 sec) 

But it gives this exception.

com.espertech.esper.view.ViewParameterException: Externally-timed view requires a timestamp expression and a numeric or time period parameter for window size

Have any one faced this problem. Thanks Sajith

Answer 1

When providing time to Esper using external timing, typically people use the time window (win:time). The ext_timed is then typically not used because time is already externally provided. I think ext_timed takes a long-value and not a Date.