[rules-users] NPE after rule consequence executes
Scott Reed
sreed at avacoda.com
Wed Apr 9 18:19:04 EDT 2008
I think the compiler jar failed to build perhaps due to the error?
Edson Tirelli's message received 4/9/2008 6:14 PM:
>
> After the build, you can find the jars in:
>
> drools-core/target
> drools-compiler/target
>
> Their version must always match or you will end up with other problems.
>
> []s
> Edson
>
>
>
> 2008/4/9 Scott Reed <sreed at avacoda.com <mailto:sreed at avacoda.com>>:
>
> 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. <http://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 <mailto: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
>>> <mailto: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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>>>
>>>
>>>
>>> --
>>> 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
>>> <http://www.jboss.com>
>>> ------------------------------------------------------------------------
>>> _______________________________________________ rules-users
>>> mailing list rules-users at lists.jboss.org
>>> <mailto: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 <http://www.jboss.com>
>> ------------------------------------------------------------------------
>> _______________________________________________ rules-users
>> mailing list rules-users at lists.jboss.org
>> <mailto: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 <http://www.jboss.com>
> ------------------------------------------------------------------------
>
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