[rules-users] NullPointerException when load file rules
elMateo
soyelmateo at gmail.com
Tue Jan 10 12:56:39 EST 2012
Yes, mvel2 is a bundle in my framework and I add this file in META-INF.
I find drools.packagebuilder.conf in droos-compiler, and I copy this to my
META-INF dir.
And it works!!!!!! Aleluya!!!!
On Tue, Jan 10, 2012 at 6:50 PM, Mauricio Salatino <salaboy at gmail.com>wrote:
> Do you have the mvel2 bundle in your class path?
> Did you add the file that I mention inside the META-INF dir inside your
> app?
>
> Cheers.
>
> 2012/1/10 elMateo <soyelmateo at gmail.com>:
> > Now, this is the trace: (it's different to the other)
> >
> > org.drools.RuntimeDroolsException: Unable to load dialect ':mvel:null'
> > [stderr] at
> >
> org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:283)
> > [stderr] at
> >
> org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap(PackageBuilderConfiguration.java:268)
> > [stderr] at
> >
> org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:181)
> > [stderr] at
> >
> org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:159)
> > [stderr] at
> > org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:210)
> > [stderr] at
> > org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:143)
> > [stderr] at
> >
> org.drools.builder.impl.KnowledgeBuilderFactoryServiceImpl.newKnowledgeBuilder(KnowledgeBuilderFactoryServiceImpl.java:34)
> > [stderr] at
> >
> org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilder(KnowledgeBuilderFactory.java:47)
> > [stderr] at
> drools.ejemplos.DroolsTest.readKnowledgeBase(DroolsTest.java:94)
> > [stderr] at drools.ejemplos.DroolsTest.execute(DroolsTest.java:68)
> > [stderr] at drools.ejemplos.DroolsTest.<init>(DroolsTest.java:60)
> > [stderr] at drools.ejemplos.Activator.start(Activator.java:14)
> > [stderr] at
> > org.knopflerfish.framework.BundleImpl.start0(BundleImpl.java:356)
> > [stderr] at
> > org.knopflerfish.framework.BundleThread.run(BundleThread.java:107)
> > [stderr] Caused by: java.lang.NullPointerException
> > [stderr] at
> >
> org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:278)
> > [stderr] ... 13 more
> >
> > On Tue, Jan 10, 2012 at 6:46 PM, Mauricio Salatino <salaboy at gmail.com>
> > wrote:
> >>
> >> If it works we can prove that most of the OSGI containers works in the
> >> same way :)
> >>
> >> 2012/1/10 elMateo <soyelmateo at gmail.com>:
> >> > Hi Mauricio,
> >> >
> >> > I'm going to test this.
> >> >
> >> > Thank you so much!!
> >> >
> >> > On Tue, Jan 10, 2012 at 6:35 PM, Mauricio Salatino <salaboy at gmail.com
> >
> >> > wrote:
> >> >>
> >> >> Oh.. I see what is happening here.. the Default dialects and session
> >> >> configurations are not being loaded by your OSGI environment :)
> >> >> It took me a while to find that out so I hope this comment helps you
> >> >> to save some valuable time.
> >> >> Solution: you need to add inside your project that is loading the
> >> >> rules the following file:
> >> >> META-INF/drools.packagebuilder.conf
> >> >>
> >> >> That contains the following content:
> >> >> drools.dialect.default = java
> >> >> drools.dialect.java =
> >> >> org.drools.rule.builder.dialect.java.JavaDialectConfiguration
> >> >> drools.dialect.java.compiler = ECLIPSE
> >> >>
> >> >> drools.dialect.mvel =
> >> >> org.drools.rule.builder.dialect.mvel.MVELDialectConfiguration
> >> >> drools.dialect.mvel.strict = true
> >> >> drools.dialect.mvel.langLevel = 4
> >> >>
> >> >> drools.accumulate.function.average =
> >> >> org.drools.base.accumulators.AverageAccumulateFunction
> >> >> drools.accumulate.function.max =
> >> >> org.drools.base.accumulators.MaxAccumulateFunction
> >> >> drools.accumulate.function.min =
> >> >> org.drools.base.accumulators.MinAccumulateFunction
> >> >> drools.accumulate.function.count =
> >> >> org.drools.base.accumulators.CountAccumulateFunction
> >> >> drools.accumulate.function.sum =
> >> >> org.drools.base.accumulators.SumAccumulateFunction
> >> >> drools.accumulate.function.collectList =
> >> >> org.drools.base.accumulators.CollectListAccumulateFunction
> >> >> drools.accumulate.function.collectSet =
> >> >> org.drools.base.accumulators.CollectSetAccumulateFunction
> >> >>
> >> >> drools.evaluator.coincides =
> >> >> org.drools.base.evaluators.CoincidesEvaluatorDefinition
> >> >> drools.evaluator.before =
> >> >> org.drools.base.evaluators.BeforeEvaluatorDefinition
> >> >> drools.evaluator.after =
> >> >> org.drools.base.evaluators.AfterEvaluatorDefinition
> >> >> drools.evaluator.meets =
> >> >> org.drools.base.evaluators.MeetsEvaluatorDefinition
> >> >> drools.evaluator.metby =
> >> >> org.drools.base.evaluators.MetByEvaluatorDefinition
> >> >> drools.evaluator.overlaps =
> >> >> org.drools.base.evaluators.OverlapsEvaluatorDefinition
> >> >> drools.evaluator.overlappedby =
> >> >> org.drools.base.evaluators.OverlappedByEvaluatorDefinition
> >> >> drools.evaluator.during =
> >> >> org.drools.base.evaluators.DuringEvaluatorDefinition
> >> >> drools.evaluator.includes =
> >> >> org.drools.base.evaluators.IncludesEvaluatorDefinition
> >> >> drools.evaluator.starts =
> >> >> org.drools.base.evaluators.StartsEvaluatorDefinition
> >> >> drools.evaluator.startedby =
> >> >> org.drools.base.evaluators.StartedByEvaluatorDefinition
> >> >> drools.evaluator.finishes =
> >> >> org.drools.base.evaluators.FinishesEvaluatorDefinition
> >> >> drools.evaluator.finishedby =
> >> >> org.drools.base.evaluators.FinishedByEvaluatorDefinition
> >> >> drools.evaluator.equality =
> >> >> org.drools.base.evaluators.EqualityEvaluatorsDefinition
> >> >> drools.evaluator.comparable =
> >> >> org.drools.base.evaluators.ComparableEvaluatorsDefinition
> >> >> drools.evaluator.set =
> >> >> org.drools.base.evaluators.SetEvaluatorsDefinition
> >> >> drools.evaluator.matches =
> >> >> org.drools.base.evaluators.MatchesEvaluatorsDefinition
> >> >> drools.evaluator.soundslike =
> >> >> org.drools.base.evaluators.SoundslikeEvaluatorsDefinition
> >> >>
> >> >> That is provided by drools-compiler.jar or drools-core.jar (I don't
> >> >> have the code here) but it's not being picked up by the OSGI
> >> >> container.
> >> >>
> >> >> Cheers
> >> >>
> >> >>
> >> >> 2012/1/10 elMateo <soyelmateo at gmail.com>:
> >> >> > I'm using Drools 5.4.0 Beta 1 and my DRL is the Hello World of
> Drools
> >> >> > :)
> >> >> > (all my application is the Hello World of Drools, because I'm
> trying
> >> >> > to
> >> >> > do a
> >> >> > OSGi bundle with this application).
> >> >> >
> >> >> > In my OSGi framework is running drools.core, drools.compiler and
> >> >> > knowledge-api, and others bundles.
> >> >> >
> >> >> > Thanks for reply me.
> >> >> >
> >> >> > On Tue, Jan 10, 2012 at 6:15 PM, Swindells, Thomas
> >> >> > <TSwindells at nds.com>
> >> >> > wrote:
> >> >> >>
> >> >> >> Looking at the stack trace, if you are on the same version as
> drools
> >> >> >> as
> >> >> >> me
> >> >> >> it looks like it is this line
> >> >> >> this.rule.setDialect( getDialect().getId() );
> >> >> >>
> >> >> >> The most likely reason is your DRL isn't valid - perhaps where you
> >> >> >> are
> >> >> >> specifying the dialect, or it could be your
> >> >> >> Dependencies aren't right or something.
> >> >> >> Which version of drools are you using. Have you tried reducing
> your
> >> >> >> DRL
> >> >> >> file to the minimum that generates the error - then post that DRL
> if
> >> >> >> you
> >> >> >> need further help.
> >> >> >>
> >> >> >> Thomas
> >> >> >>
> >> >> >> > -----Original Message-----
> >> >> >> > From: rules-users-bounces at lists.jboss.org [mailto:rules-users-
> >> >> >> > bounces at lists.jboss.org] On Behalf Of jjmartinez
> >> >> >> > Sent: 10 January 2012 17:05
> >> >> >> > To: rules-users at lists.jboss.org
> >> >> >> > Subject: Re: [rules-users] NullPointerException when load file
> >> >> >> > rules
> >> >> >> >
> >> >> >> > Anybody can help me? I don't know why my application show these
> >> >> >> > errors.
> >> >> >> >
> >> >> >> > Thanks in advance!
> >> >> >> >
> >> >> >> > java.lang.NullPointerException
> >> >> >> at
> >> >> >>
> >> >> >>
> >> >> >>
> org.drools.rule.builder.RuleBuildContext.<init>(RuleBuildContext.java:88)
> >> >> >> at
> >> >> >>
> org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1149)
> >> >> >> at
> >> >> >>
> >> >> >>
> org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:636)
> >> >> >> at
> >> >> >>
> >> >> >>
> >> >> >>
> org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:266)
> >> >> >> at
> >> >> >>
> >> >> >>
> >> >> >>
> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:458)
> >> >> >> at
> >> >> >>
> >> >> >>
> >> >> >>
> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
> >> >> >> at
> >> >> >> drools.ejemplos.DroolsTest.readKnowledgeBase(DroolsTest.java:85)
> >> >> >> at drools.ejemplos.DroolsTest.execute(DroolsTest.java:64)
> >> >> >> at drools.ejemplos.DroolsTest.<init>(DroolsTest.java:56)
> >> >> >> at drools.ejemplos.Activator.start(Activator.java:14)
> >> >> >> at
> >> >> >> org.knopflerfish.framework.BundleImpl.start0(BundleImpl.java:356)
> >> >> >> at
> >> >> >> org.knopflerfish.framework.BundleThread.run(BundleThread.java:107)
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >>
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> >> >> >
> >> >> >
> >> >> >
> >> >> > _______________________________________________
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> >> >>
> >> >>
> >> >>
> >> >> --
> >> >> - CTO @ http://www.plugtree.com
> >> >> - MyJourney @ http://salaboy.wordpress.com
> >> >> - Co-Founder @ http://www.jugargentina.org
> >> >> - Co-Founder @ http://www.jbug.com.ar
> >> >>
> >> >> - Salatino "Salaboy" Mauricio -
> >> >>
> >> >> _______________________________________________
> >> >> rules-users mailing list
> >> >> rules-users at lists.jboss.org
> >> >> https://lists.jboss.org/mailman/listinfo/rules-users
> >> >
> >> >
> >> >
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> >> >
> >>
> >>
> >>
> >> --
> >> - CTO @ http://www.plugtree.com
> >> - MyJourney @ http://salaboy.wordpress.com
> >> - Co-Founder @ http://www.jugargentina.org
> >> - Co-Founder @ http://www.jbug.com.ar
> >>
> >> - Salatino "Salaboy" Mauricio -
> >>
> >> _______________________________________________
> >> rules-users mailing list
> >> rules-users at lists.jboss.org
> >> https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
> >
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> --
> - CTO @ http://www.plugtree.com
> - MyJourney @ http://salaboy.wordpress.com
> - Co-Founder @ http://www.jugargentina.org
> - Co-Founder @ http://www.jbug.com.ar
>
> - Salatino "Salaboy" Mauricio -
>
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