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@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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