[rules-users] using from with not

[Chris West]

Attached is the eclipse project that illustrates the problem.  I use Drools
4.0.0, and have not tried this code with 4.0.1 (since bugs in it keep me
from upgrading until 4.0.2).

-Chris

On 10/4/07, Chris West <crayzfishr at gmail.com> wrote:
>
> That makes it compile, but during the run I get:
>
> java.lang.NullPointerException
>     at org.drools.reteoo.builder.BuildUtils.createBetaNodeConstraint(
> BuildUtils.java:168)
>     at org.drools.reteoo.builder.GroupElementBuilder$NotBuilder.build (
> GroupElementBuilder.java:231)
>     at org.drools.reteoo.builder.GroupElementBuilder.build(
> GroupElementBuilder.java:70)
>     at org.drools.reteoo.builder.GroupElementBuilder$AndBuilder.build(
> GroupElementBuilder.java:112)
>     at org.drools.reteoo.builder.GroupElementBuilder.build(
> GroupElementBuilder.java:70)
>     at org.drools.reteoo.builder.ReteooRuleBuilder.addSubRule(
> ReteooRuleBuilder.java:136)
>     at org.drools.reteoo.builder.ReteooRuleBuilder.addRule (
> ReteooRuleBuilder.java:109)
>     at org.drools.reteoo.ReteooBuilder.addRule(ReteooBuilder.java:116)
>     at org.drools.reteoo.ReteooRuleBase.addRule(ReteooRuleBase.java:262)
>     at org.drools.common.AbstractRuleBase.addPackage (
> AbstractRuleBase.java:333)
>     at com.sample.DroolsTest.readRule(DroolsTest.java:66)
>     at com.sample.DroolsTest.main(DroolsTest.java:23)
>
>
> -Chris
>
> On 10/4/07, Anstis, Michael (M.) <manstis1 at ford.com> wrote:
> >
> >  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
> > >
> > >
> > >
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
> >
>
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