Re: [rules-users] Accumulate + Temporal Operators
Yeah, you'll have to reinsert events into the stream, or another stream. Probably the
latter would be better.
rule "DetectedFooAverageOver1"
when
$f : Double(doubleValue > 1.0) from accumulate( Event($v : value, name ==
"Foo") over window:time ( 10s ) from entry-point EntryPoint, average($v))
then
entryPoints["DetectedStuff"].insert(new ComplexEvent("FooAvg",
$f));
end
Then a similar rule for the Bar average, and a rule to test the coincidence of the complex
events:
rule "ComplexAvgBarPrettySoonAfterComplexAvgFoo"
when
$foo : ComplexEvent(name == "FooAvg") from entry-point DetectedStuff
$bar : ComplexEvent(name == "BarAvg", this after[0s,1s] $foo) from entry-point
DetectedStuff
then
System.out.println("Uf, dah!");
end
And more fun can be had with this event aggregation idea.
--- On Sun, 1/17/10, Paul R. <reverselogic(a)gmail.com> wrote:
From: Paul R. <reverselogic(a)gmail.com>
Subject: Re: [rules-users] Accumulate + Temporal Operators
To: "Rules Users List" <rules-users(a)lists.jboss.org>
Date: Sunday, January 17, 2010, 12:29 PM
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(a)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(a)gmail.com>
wrote:
> From: Paul R. <reverselogic(a)gmail.com>
> Subject: [rules-users] Accumulate + Temporal
Operators
> To: rules-users(a)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
>
>
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