[rules-users] error when referening LHS->exists block var in RHS

[Edson Tirelli]

      As long as you can say "how close" you want using an absolute number,
it is possible: let's say you want all tickers that happened up to 10
minutes before a given timestamp:

rule "Pseudo rule"
when
 ArrayList() from collect( Ticker( price == 20.00, timeInMillsec
before[1ms,10m] 1000000 ))
then
//do conseq
end

    You can replace your timestamp (1000000) above with a Date variable or
something like it.

    []s
    Edson

2009/2/17 techy <techluver007 at gmail.com>

>
> I think I better more accurate info for my requirement.
>
> Is there way to get list of ( or single) Ticker that is close to given
> timeInMillSec and exact price value ?
>
> Class Male
> {
>  long timeInMillsec;
>  float price;
>  String symbol
> }
>
> rule "Pseudo rule"
> when
>  ArrayList() from collect( Ticker( price == 20.00 && timeInMillsec is close
> to 1000000 ))
> then
> //do conseq
> end
>
>
> Thanks.
>
>
> techy wrote:
> >
> > That's makes Edson. Thank you.
> >
> > Is there way to to sort the facts collected using "collect" in LHS
> itself?
> > I could not find any hint in the documentation.
> >
> >
> >
> > Edson Tirelli-3 wrote:
> >>
> >>    That is expected behavior.
> >>
> >>    This is because quantifier CEs like "exists", "not" and "forall" will
> >> evaluate multiple facts at once. So, if your rule has 5 foos in the
> >> working
> >> memory, which one would you expect to print?
> >>
> >>    If you want to print each of them, remove the "exists"... if you want
> >> to
> >> print all of them, use "collect" instead of "exists".
> >>
> >>    []s
> >>    Edson
> >>
> >> 2009/2/17 techy <techluver007 at gmail.com>
> >>
> >>>
> >>> I get $foo can't be resolved error for following rule. Some guidance is
> >>> appreciated to reference $foo without error.
> >>>
> >>> Rule "Foo rule"
> >>> when
> >>>   exists( $foo: Foo())
> >>> then
> >>>  System.out.println($foo);
> >>> end
> >>>
> >>> Thanks in advance.
> >>> --
> >>> View this message in context:
> >>>
> http://www.nabble.com/error-when-referening-LHS-%3Eexists-block-var-in-RHS-tp22063253p22063253.html
> >>> Sent from the drools - user mailing list archive at Nabble.com.
> >>>
> >>> _______________________________________________
> >>> rules-users mailing list
> >>> rules-users at lists.jboss.org
> >>> https://lists.jboss.org/mailman/listinfo/rules-users
> >>>
> >>
> >>
> >>
> >> --
> >>  Edson Tirelli
> >>  JBoss Drools Core Development
> >>  JBoss, a division of Red Hat @ www.jboss.com
> >>
> >> _______________________________________________
> >> rules-users mailing list
> >> rules-users at lists.jboss.org
> >> https://lists.jboss.org/mailman/listinfo/rules-users
> >>
> >>
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/error-when-referening-LHS-%3Eexists-block-var-in-RHS-tp22063253p22067020.html
> Sent from the drools - user mailing list archive at Nabble.com.
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>



-- 
 Edson Tirelli
 JBoss Drools Core Development
 JBoss, a division of Red Hat @ www.jboss.com
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