[rules-users] CEP sliding window in the past

[Wolfgang Laun]

In this case: the sum of measures in the window between 3 and 2 minutes
ago equals the difference of the measures in the window between 3 and now
and 2 and now, respectively.

-W

On 6 September 2011 21:56, cfuser <cfuser at yahoo.com> wrote:

> Can you offset the sliding window functionality to look for a window in the
> past?  What I'm trying to do is offset the window from 'now'.  E.g.
> Assuming it is 12:05 and I have been receiving objects for 5 minutes, I'm
> trying to get this to sum received objects between 2 and 3 minutes ago.
>
> rule "Accumulate attempts over 1 minute (window over time)"
>    when
>        $measure : Number()
>            from accumulate( MyData( $m:measures["attempts"],
> objectType=="climber" )
>                over window:time( 2m, 3m ) from entry-point "My Stream",
>                sum($m))
>
>    then
>    #
> end
>
> Looking at the SlidingTimeWindow source code, it looks as though you can't
> offset the window by a delay?  Is that accurate?  If you can't do that
> directly via a sliding window, is there a way to work around this?
>
> TIA.
>
>
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