[rules-users] NullPointerException when load file rules

elMateo soyelmateo at gmail.com
Tue Jan 10 12:48:13 EST 2012 

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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> >> >
> >> >
> >> >
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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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> rules-users mailing list
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