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

_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users

_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users

_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users