[rules-users] Accumulate + Temporal Operators

[Paul R.]

I've declared an @expires of 30s for both events. However, my problem is
that within a 30 second window it doesn't seem possible to ascertain whether
both of the events occur simultaneously. I could change the @expires to 10
seconds for the above rule, which would make it work. However, I would like
to be to perform more complicated matches, e.g. matching sequences of events
which occur after another.

        $f : Double(doubleValue > 1.0) from accumulate( Event($v : value,
name == "Foo") over window:time ( 10s )
            from entry-point EntryPoint, average($v))

        // following event must start immediately _after_ the above.

        $b : Double(doubleValue < 1.0) from accumulate( Event($v : value,
name == "Bar") over window:time ( 20s )
            from entry-point EntryPoint, average($v))

Any suggestions how I can achieve this kind of functionality?

Many Thanks,

Paul


On Sun, Jan 17, 2010 at 4:19 AM, Greg Barton <greg_barton at yahoo.com> wrote:

> Do your Foo and Bar events declare an @expires value?  If their expiration
> is less than 10 seconds then the rule below won't work properly. (And by
> default an event's expiration is 0, which makes the rule below go wacky if
> @expires hasn't been declared...)  If the @expires is 10s or greater for
> both events it should work.
>
> --- On Thu, 1/14/10, Paul R. <reverselogic at gmail.com> wrote:
>
> > From: Paul R. <reverselogic at gmail.com>
> > Subject: [rules-users] Accumulate + Temporal Operators
> > To: rules-users at lists.jboss.org
> > Date: Thursday, January 14, 2010, 1:56 PM
> > Hi,
> >
> > I'm using accumulate with sliding windows to verify
> > that certain event conditions are present for a specified
> > period of time, which works fine, however
> > I need to verify that both conditions are present at the
> > same time, i.e Foo.value > 1 for 10 seconds and Bar.value
> > < 1 for 10 seconds. There doesn't
> >
> > appear to be an obvious way to use the temporal operators
> > in this situation. Can anybody offer any suggestions?
> >
> >     rule test no-loop true
> >     when
> >         $f : Double(doubleValue > 1.0) from
> > accumulate( Foo($v : value) over window:time ( 10s )
> >
> >             from entry-point EntryPoint,
> > min($v))
> >         $b : Double(doubleValue < 1.0) from
> > accumulate( Bar($v : value) over window:time ( 10s )
> >             from entry-point EntryPoint,
> > max($v))
> >     then
> >
> >         // ...
> >     end
> >
> > Any help greatly appreciated.
> >
> > Thanks,
> >
> > Paul
> >
> >
> > -----Inline Attachment Follows-----
> >
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>
>
>
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