[rules-users] using from with not

[Edson Tirelli]

   From the manual:

"A not statement must be followed by parentheses around the pattern that it
applies to. In the simplest case of a single pattern (like below) you can
omit the parentheses."

   We improved the docs for the next version. Hope it is clearer now. But
Michael got it right.

    []s
    Edson

2007/10/4, Anstis, Michael (M.) <manstis1 at ford.com>:
>
>  What if you try "not (Foo(id == 10) from $foos)"?
>
>  ------------------------------
> *From:* rules-users-bounces at lists.jboss.org [mailto:
> rules-users-bounces at lists.jboss.org] *On Behalf Of *Chris West
> *Sent:* 04 October 2007 16:59
> *To:* Rules Users List
> *Subject:* Re: [rules-users] using from with not
>
> It does not compile.  The error is:
> unknown:32:20 mismatched token: [@243,682:685='from',<38>,32:20];
> expecting type THEN
>
> -Chris
>
> On 10/4/07, Anstis, Michael (M.) <manstis1 at ford.com> wrote:
> >
> >  Does it not compile (in which case can you post the error)?
> >
> > Or does it not activate?
> >
> >  ------------------------------
> > *From:* rules-users-bounces at lists.jboss.org [mailto:
> > rules-users-bounces at lists.jboss.org] *On Behalf Of *Chris West
> > *Sent:* 04 October 2007 16:03
> > *To:* Rules Users List
> > *Subject:* [rules-users] using from with not
> >
> >  Hello,
> >
> > Does anyone know why rule "GoodBye2" below does not compile, but rule
> > "GoodBye1" does compile using Drools 4.0.0?  The only difference is the
> > "not".  Shouldn't this be valid?
> >
> > Thanks,
> > -Chris
> >
> >
> > package com.sample
> >
> > import com.sample.DroolsTest.Message;
> > import com.sample.DroolsTest.Foo;
> > import java.util.List;
> >
> > rule "Hello World"
> >     when
> >         m : Message( status == Message.HELLO, message : message )
> >     then
> >         System.out.println( message );
> >         m.setMessage( "Goodbye cruel world" );
> >         m.setStatus( Message.GOODBYE );
> >         update( m );
> > end
> >
> > rule "GoodBye1"
> >     no-loop true
> >     when
> >         m : Message( status == Message.GOODBYE, message : message,
> > $foos: foos )
> >         Foo(id == 10) from $foos
> >     then
> >         System.out.println ( message );
> >         m.setMessage( message );
> >
> > end
> >
> > rule "GoodBye2"
> >     no-loop true
> >     when
> >         m : Message( status == Message.GOODBYE, message : message,
> > $foos: foos )
> >         not Foo(id == 10) from $foos
> >     then
> >         System.out.println( message );
> >         m.setMessage( message );
> >
> > end
> >
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
> >
>
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>
>


-- 
  Edson Tirelli
  Software Engineer - JBoss Rules Core Developer
  Office: +55 11 3529-6000
  Mobile: +55 11 9287-5646
  JBoss, a division of Red Hat @ www.jboss.com
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