[rules-users] RuntimeDroolsException: Unable to load

[Robert Morse]

Hello Edson,
Eric was kind enough to reply that he "solved" his problem by  
including ALL of the jars in the drools lib distribution directory in  
his classpath -- not just the drools jars, mvel, and eclipse jars.
If I do this, JBoss 4.2.1 complains about not being able to parse its  
xml configuration files, so I'm narrowing the jars I'm including to  
see if I can isolate what's missing.

On Nov 5, 2007, at 6:15 AM, Edson Tirelli wrote:

>
>    Maybe any of you can zip a small project showing this problem and  
> send me. I will dig down to find the problem and we can have an  
> answer available to all. This is for sure a classpath problem, so  
> just a matter of finding out exactly what is missing.
>
>    []s
>    Edson
>
>
> 2007/11/4, Robert Morse <rmorse at mdesignz.com>:
> Hello Eric,
> If you find a solution for this, please let me know.  I'm experiencing
> a similar problem.
> Thanks.
>
> -robert.
>
> On Oct 15, 2007, at 7:00 PM, Chong Minsk Goh wrote:
>
> > Hi Mark,
> >
> > Thank for the tips. : )
> >
> > I have added the required mvel14-1.2.8.jar in my classpath. However,
> > I still encounter the same error.
> >
> > Could it be a class loader issue or JRE version?
> >
> > I tried to trace the class loader. Drools is used in my application
> > (running in netbeans). My application is using
> > java.net.FactoryURLClassLoader. On plain netbeans project (before
> > the error occurs), the class loader is sun.misc.Launcher
> > $AppClassLoader. My netbeans is using JRE v 1.6.0
> >
> > The error occurs when PackageBuilder is initialised.
> >
> > Package Builder builder = new PackageBuilder();
> >
> > Also, for the Drools Eclipse plugin (on a seperate occassion), when
> > i import some codes, it prompt me that Drools project is not a Java
> > 5.0 project.
> >
> >
> > Best regards!
> > Eric
> >
> >
> > Chong Minsk Goh wrote:
> > > Hi,
> > >
> > > I am trying to run Drools on Netbeans. I have added the jars from
> > > Drools 4.0.2.
> > >
> > > However, I encountered an error
> > >
> > > org.doxa.rules.RulesManager - org.drools.RuntimeDroolsException:
> > > Unable to load dialect
> > >  
> 'org.drools.rule.builder.dialect.mvel.MVELDialectConfiguration:mvel'
> > MVEL is a required jar, not an optional one, put it on your  
> classpath
> > and hopefully this should work for you.
> > >
> > > I did not use any MVEL dialects in my rules definition. Here is my
> > rule:
> > > *
> > >
> > > rule
> > >
> > > * "Out of Range" *when* m : Message( message == "checkRange" ,
> > status
> > > == 1 )
> > >
> > > Range(myMin : myMin, myMax : myMax, myValue : myValue)
> > >
> > > Range(myValue < myMin || myValue > myMax)
> > >
> > > *then* m.setMessage("");
> > >
> > > m.setStatus (0);
> > >
> > > *end*
> > >
> > > Has anyone attempted using Netbeans with Drools and faced this
> > problem?
> > >
> > > Best regards
> > > Eric
> >
> > _______________________________________________
> > 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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