[rules-users] NPE after rule consequence executes
Edson Tirelli
tirelli at post.com
Wed Apr 9 18:27:11 EDT 2008
Are you using Java 6?
Dynamic functions do not work with Java 6 because changes Sun made to
classloading. If you are not using dynamic functions and still wants to use
Java 6, disable tests during build by running:
mvn -Dmaven.test.skip clean install
[]s
Edson
2008/4/9 Scott Reed <sreed at avacoda.com>:
> I noticed one error in the build:
>
> -------------------------------------------------------------------------------
> Test set: org.drools.integrationtests.DynamicRulesTest
>
> -------------------------------------------------------------------------------
> Tests run: 16, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 2.5 sec
> <<< FAILURE!
> testDynamicFunction(org.drools.integrationtests.DynamicRulesTest) Time
> elapsed: 0.062 sec <<< ERROR!
> java.lang.NoClassDefFoundError: org/drools/test/AddFive
> at
> org.drools.test.Rule_global_rule_test_0.consequence(Rule_global_rule_test_0.java:9)
> at
> org.drools.test.Rule_global_rule_test_0ConsequenceInvoker.evaluate(Rule_global_rule_test_0ConsequenceInvoker.java:20)
> at
> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:550)
> at
> org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:514)
> at
> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:477)
> at
> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:439)
> at
> org.drools.integrationtests.DynamicRulesTest.testDynamicFunction(DynamicRulesTest.java:311)
>
> Scott Reed's message received 4/9/2008 5:25 PM:
>
> I built it but can only find the core jar file, nothing for the compiler.
> With just the core jar replaced, I still get the NPE.
>
> Edson Tirelli's message received 4/9/2008 2:24 PM:
>
>
> Nope, only source code.
> Problem is 4.0.x will be released as 4.0.7, and if your specific
> problem is fixed and you are not able to test before the release, it will
> have to wait 4.0.8.
>
> All you need to build drools is java, maven and ant. Can you set this
> up?
>
> []s
> Edson
>
>
> 2008/4/9 Scott Reed <sreed at avacoda.com>:
>
> > Glad to hear that. However, I am not set up to do my own drools build
> > and it looks like the link you sent is for the source. Is there a set of
> > jars for 4.0.x that I can test from? Here is what I am using now:
> >
> > antlr-runtime-3.0.jar
> > core-3.2.3.v_686_R32x.jar
> > drools-compiler-4.0.4.jar
> > drools-core-4.0.4.jar
> > mvel14-1.2.21.jar
> > xstream-1.2.2.jar
> >
> > Thanks,
> > Scott
> >
> > Edson Tirelli's message received 4/9/2008 11:46 AM:
> >
> >
> > Scott,
> >
> > I believe this is fixed already. Can you try it out and let us know?
> >
> > http://anonsvn.labs.jboss.com/labs/jbossrules/branches/4.0.x/
> >
> > []s
> > Edson
> >
> >
> > 2008/4/8 Scott Reed <sreed at avacoda.com>:
> >
> > > Sorry, the NPE is in ReteTuple.get(Declaration)
> > >
> > > Scott Reed's message received 4/8/2008 7:38 PM:
> > >
> > > > Running Drools 4.0.3, on Win 2k sp4, JDK 1.6.0_03.
> > > >
> > > > I am getting this exception after the debugger shows execution has
> > > > gone past the end of the rule. The exception is occurring in
> > > > ReteTuple.get(Descriptor). I believe the descriptor argument is null. Can
> > > > anyone suggest why this might be happening and what I can do to avoid it?
> > > > Thanks,
> > > > Scott
> > > >
> > > > java.lang.NullPointerException
> > > > at org.drools.reteoo.ReteTuple.get(ReteTuple.java:97)
> > > > at
> > > > org.fp.findata.Rule_2MS__Calculate_now_scheduled_or_periodic_transaction_0ConsequenceInvoker.evaluate(Rule_2MS__Calculate_now_scheduled_or_periodic_transaction_0ConsequenceInvoker.java:19)
> > > >
> > > > at
> > > > org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:550)
> > > > at
> > > > org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:514)
> > > > at
> > > > org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:471)
> > > >
> > > > at
> > > > org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:433)
> > > >
> > > > at
> > > > org.fp.rules.RuleEngineManager$RunTask.run(RuleEngineManager.java:225)
> > > > org.drools.spi.ConsequenceException: java.lang.NullPointerException
> > > > at
> > > > org.drools.base.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:14)
> > > >
> > > > at
> > > > org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:554)
> > > > at
> > > > org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:514)
> > > > at
> > > > org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:471)
> > > >
> > > > at
> > > > org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:433)
> > > >
> > > > at
> > > > org.fp.rules.RuleEngineManager$RunTask.run(RuleEngineManager.java:225)
> > > > Caused by: java.lang.NullPointerException
> > > > at org.drools.reteoo.ReteTuple.get(ReteTuple.java:97)
> > > > at
> > > > org.fp.findata.Rule_2MS__Calculate_now_scheduled_or_periodic_transaction_0ConsequenceInvoker.evaluate(Rule_2MS__Calculate_now_scheduled_or_periodic_transaction_0ConsequenceInvoker.java:19)
> > > >
> > > > at
> > > > org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:550)
> > > > ... 4 more
> > > > _______________________________________________
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> > > > rules-users at lists.jboss.org
> > > > https://lists.jboss.org/mailman/listinfo/rules-users
> > > >
> > > > _______________________________________________
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> > >
> >
> >
> >
> > --
> > Edson Tirelli
> > JBoss Drools Core Development
> > Office: +55 11 3529-6000
> > Mobile: +55 11 9287-5646
> > JBoss, a division of Red Hat @ www.jboss.com
> >
> > ------------------------------
> >
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> >
> >
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> >
>
>
> --
> Edson Tirelli
> JBoss Drools Core Development
> Office: +55 11 3529-6000
> Mobile: +55 11 9287-5646
> JBoss, a division of Red Hat @ www.jboss.com
>
> ------------------------------
>
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>
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--
Edson Tirelli
JBoss Drools Core Development
Office: +55 11 3529-6000
Mobile: +55 11 9287-5646
JBoss, a division of Red Hat @ www.jboss.com
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