On 10/4/07, Edson Tirelli < tirelli@post.com> wrote:

    Chris,

    I just tested your example and it works fine in 4.0.2.SNAPSHOT. We fixed a long list of bugs from 4.0.0 to 4.0.1/4.0.2, so I guess this is one of them.
    My suggestion for you is: since you will need to update anyway and we fixed the bugs you reported in JIRA, get and test the latest binary from here:

https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/

    The only changes we expect to do in it for the 4.0.2 release are IDE changes, so it is very close to what you will get when it is released.

     []s
     Edson

2007/10/4, Chris West < crayzfishr@gmail.com>:
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@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@ford.com> wrote:

What if you try "not (Foo(id == 10) from $foos) "?

From: rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@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@ford.com> wrote:

Does it not compile (in which case can you post the error)?

Or does it not activate?

From: rules-users-bounces@lists.jboss.org [mailto: rules-users-bounces@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

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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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