5:17 p.m.
I have rules like the following:
rule "Add Baseline to Context if it does not exists exists or not greater
then 0"
no-loop true
when
$context:Context($id:id,baselineParticipation==null ||
baselineParticipation.baselineRatio==null||baselineParticipation.baselineRatio==0)
then
modify($firm) {setBaselineParticipation(new BaselineParticipation($id,new
BigDecimal(0.00485)))};
end
rule "Calculate Participation Ratio"
no-loop true
when
$context:Context(consolidatdVolume!=null,consolidatdVolume.avgVolume>0,
volumeAccumulations["total"]!=null,volumeAccumulations["total"]>0,
$ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
then
ConcurrentMap calculatedRatios=$firm.getCalculatedRatios();
calculatedRatios.put("fparticipationRatio",new BigDecimal($ratio));
modify($firm){setCalculatedRatios(calculatedRatios)};
end
Despite the checks I get the following exception and any insight into why
would be great:
Exception executing consequence for rule "Calculate Firm Participation
Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: / by zero
Exception executing consequence for rule "Calculate Firm Participation
Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: / by zero
at
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1297)
at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1221)
at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1456)
at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710)
at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674)
at
org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230)
at
com.nasdaq.fq.rms.workflow.processor.rules.PerformanceStatusAssignmentProcessor.doWork(PerformanceStatusAssignmentProcessor.java:156)
at com.ften.ssr.workqueue.WorkItemRunnable.run(WorkItemRunnable.java:48)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Caused by: java.lang.ArithmeticException: / by zero
at ConditionEvaluatorda6271cf5a744b6bbdb9c717cae2edb7.evaluate(Unknown
Source)
at
org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:200)
at
org.drools.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:157)
at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:154)
at
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
at
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157)
at
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
at
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
at org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314)
at org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265)
at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:483)
at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:383)
at
org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:337)
at
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175.defaultConsequence(Unknown
Source)
at
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvokerGenerated.evaluate(Unknown
Source)
at
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvoker.evaluate(Unknown
Source)
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287)
... 10 more
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6:13 p.m.
Divide by zero exceptions usually occur when you try to divide by zero.
So … first question … is consolidatdVolume.avgVolume ever zero?
On 1 Nov 2013, at 16:17, gboro54 <gboro54(a)gmail.com> wrote:
I have rules like the following:
rule "Add Baseline to Context if it does not exists exists or not greater
then 0"
no-loop true
when
$context:Context($id:id,baselineParticipation==null ||
baselineParticipation.baselineRatio==null||baselineParticipation.baselineRatio==0)
then
modify($firm) {setBaselineParticipation(new BaselineParticipation($id,new
BigDecimal(0.00485)))};
end
rule "Calculate Participation Ratio"
no-loop true
when
$context:Context(consolidatdVolume!=null,consolidatdVolume.avgVolume>0,
volumeAccumulations["total"]!=null,volumeAccumulations["total"]>0,
$ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
then
ConcurrentMap calculatedRatios=$firm.getCalculatedRatios();
calculatedRatios.put("fparticipationRatio",new BigDecimal($ratio));
modify($firm){setCalculatedRatios(calculatedRatios)};
end
Despite the checks I get the following exception and any insight into why
would be great:
Exception executing consequence for rule "Calculate Firm Participation
Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: / by zero
Exception executing consequence for rule "Calculate Firm Participation
Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: / by zero
at
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1297)
at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1221)
at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1456)
at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710)
at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674)
at
org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230)
at
com.nasdaq.fq.rms.workflow.processor.rules.PerformanceStatusAssignmentProcessor.doWork(PerformanceStatusAssignmentProcessor.java:156)
at com.ften.ssr.workqueue.WorkItemRunnable.run(WorkItemRunnable.java:48)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Caused by: java.lang.ArithmeticException: / by zero
at ConditionEvaluatorda6271cf5a744b6bbdb9c717cae2edb7.evaluate(Unknown
Source)
at
org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:200)
at
org.drools.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:157)
at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:154)
at
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
at
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157)
at
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
at
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
at org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314)
at org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265)
at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:483)
at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:383)
at
org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:337)
at
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175.defaultConsequence(Unknown
Source)
at
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvokerGenerated.evaluate(Unknown
Source)
at
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvoker.evaluate(Unknown
Source)
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287)
... 10 more
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6:58 p.m.
I can anticipate the answer where OP says that there is a constraint
restricting argVolume to > 0. However, I don't think that independent
constraints such as we see them in this rule are evaluated as if they
were in a single logical expression, with Java semantics.
The seductive possibility of binding to a half-baked expression (i.e.,
$ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
should be discarded. This value can safely be computed on the RHS
where the denominator's value being !=0 is asserted.
-W
On 01/11/2013, Stephen Masters <stephen.masters(a)me.com> wrote:
Divide by zero exceptions usually occur when you try to divide by
zero.
So … first question … is consolidatdVolume.avgVolume ever zero?
On 1 Nov 2013, at 16:17, gboro54 <gboro54(a)gmail.com> wrote:
> I have rules like the following:
>
> rule "Add Baseline to Context if it does not exists exists or not greater
> then 0"
> no-loop true
> when
> $context:Context($id:id,baselineParticipation==null ||
>
> baselineParticipation.baselineRatio==null||baselineParticipation.baselineRatio==0)
> then
> modify($firm) {setBaselineParticipation(new
> BaselineParticipation($id,new
> BigDecimal(0.00485)))};
>
> end
>
> rule "Calculate Participation Ratio"
> no-loop true
> when
> $context:Context(consolidatdVolume!=null,consolidatdVolume.avgVolume>0,
>
volumeAccumulations["total"]!=null,volumeAccumulations["total"]>0,
> $ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
> then
> ConcurrentMap calculatedRatios=$firm.getCalculatedRatios();
> calculatedRatios.put("fparticipationRatio",new BigDecimal($ratio));
> modify($firm){setCalculatedRatios(calculatedRatios)};
> end
>
> Despite the checks I get the following exception and any insight into why
> would be great:
>
> Exception executing consequence for rule "Calculate Firm Participation
> Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: / by
> zero
> Exception executing consequence for rule "Calculate Firm Participation
> Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: / by
> zero
> at
>
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)
> at
> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1297)
> at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1221)
> at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1456)
> at
> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710)
> at
> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674)
> at
>
org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230)
> at
>
com.nasdaq.fq.rms.workflow.processor.rules.PerformanceStatusAssignmentProcessor.doWork(PerformanceStatusAssignmentProcessor.java:156)
> at com.ften.ssr.workqueue.WorkItemRunnable.run(WorkItemRunnable.java:48)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:724)
> Caused by: java.lang.ArithmeticException: / by zero
> at ConditionEvaluatorda6271cf5a744b6bbdb9c717cae2edb7.evaluate(Unknown
> Source)
> at
> org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:200)
> at
> org.drools.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:157)
> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:154)
> at
>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
> at
>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157)
> at
>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
> at
>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
> at
> org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314)
> at
> org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265)
> at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:483)
> at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:383)
> at
> org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:337)
> at
>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175.defaultConsequence(Unknown
> Source)
> at
>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvokerGenerated.evaluate(Unknown
> Source)
> at
>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvoker.evaluate(Unknown
> Source)
> at
> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287)
> ... 10 more
>
>
>
> --
> View this message in context:
> http://drools.46999.n3.nabble.com/Drools-5-5-divide-by-0-exception-tp4026...
> Sent from the Drools: User forum mailing list archive at Nabble.com.
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
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7:01 p.m.
So move the math to the rhs? Will that resolve the issues in your opinion?
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7:12 p.m.
If the left hand side guarantees that a > 0, a right hand side
expression b/a must be safe.
-W
On 01/11/2013, gboro54 <gboro54(a)gmail.com> wrote:
So move the math to the rhs? Will that resolve the issues in your
opinion?
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7:06 p.m.
Could you expand upon why this is a poor practice? I assumed that if a part
of the pattern doesn't match the expression evaluation is terminated
laune wrote
I can anticipate the answer where OP says that there is a constraint
restricting argVolume to > 0. However, I don't think that independent
constraints such as we see them in this rule are evaluated as if they
were in a single logical expression, with Java semantics.
The seductive possibility of binding to a half-baked expression (i.e.,
$ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
should be discarded. This value can safely be computed on the RHS
where the denominator's value being !=0 is asserted.
-W
On 01/11/2013, Stephen Masters <
stephen.masters@
> wrote:
> Divide by zero exceptions usually occur when you try to divide by zero.
>
> So … first question … is consolidatdVolume.avgVolume ever zero?
>
>
> On 1 Nov 2013, at 16:17, gboro54 <
gboro54@
> wrote:
>
>> I have rules like the following:
>>
>> rule "Add Baseline to Context if it does not exists exists or not
>> greater
>> then 0"
>> no-loop true
>> when
>> $context:Context($id:id,baselineParticipation==null ||
>>
>>
baselineParticipation.baselineRatio==null||baselineParticipation.baselineRatio==0)
>> then
>> modify($firm) {setBaselineParticipation(new
>> BaselineParticipation($id,new
>> BigDecimal(0.00485)))};
>>
>> end
>>
>> rule "Calculate Participation Ratio"
>> no-loop true
>> when
>>
>> $context:Context(consolidatdVolume!=null,consolidatdVolume.avgVolume>0,
>>
>>
volumeAccumulations["total"]!=null,volumeAccumulations["total"]>0,
>>
>> $ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
>> then
>> ConcurrentMap calculatedRatios=$firm.getCalculatedRatios();
>> calculatedRatios.put("fparticipationRatio",new BigDecimal($ratio));
>> modify($firm){setCalculatedRatios(calculatedRatios)};
>> end
>>
>> Despite the checks I get the following exception and any insight into
>> why
>> would be great:
>>
>> Exception executing consequence for rule "Calculate Firm Participation
>> Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: / by
>> zero
>> Exception executing consequence for rule "Calculate Firm Participation
>> Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: / by
>> zero
>> at
>>
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)
>> at
>> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1297)
>> at
>> org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1221)
>> at
>> org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1456)
>> at
>>
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710)
>> at
>>
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674)
>> at
>>
org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230)
>> at
>>
com.nasdaq.fq.rms.workflow.processor.rules.PerformanceStatusAssignmentProcessor.doWork(PerformanceStatusAssignmentProcessor.java:156)
>> at
>> com.ften.ssr.workqueue.WorkItemRunnable.run(WorkItemRunnable.java:48)
>> at
>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>> at
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>> at java.lang.Thread.run(Thread.java:724)
>> Caused by: java.lang.ArithmeticException: / by zero
>> at ConditionEvaluatorda6271cf5a744b6bbdb9c717cae2edb7.evaluate(Unknown
>> Source)
>> at
>> org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:200)
>> at
>> org.drools.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:157)
>> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:154)
>> at
>>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>> at
>>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157)
>> at
>>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>> at
>>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>> at
>> org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314)
>> at
>> org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265)
>> at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:483)
>> at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:383)
>> at
>> org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:337)
>> at
>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175.defaultConsequence(Unknown
>> Source)
>> at
>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvokerGenerated.evaluate(Unknown
>> Source)
>> at
>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvoker.evaluate(Unknown
>> Source)
>> at
>> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287)
>> ... 10 more
>>
>>
>>
>> --
>> View this message in context:
>>
http://drools.46999.n3.nabble.com/Drools-5-5-divide-by-0-exception-tp4026...
>> Sent from the Drools: User forum mailing list archive at Nabble.com.
>> _______________________________________________
>> rules-users mailing list
>>
rules-users@.jboss
>>
>
> _______________________________________________
> rules-users mailing list
>
rules-users@.jboss
>
_______________________________________________
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7:14 p.m.
I changed the rules to the following so I will test and see:
rule "Add Baseline to Context if it does not exists exists or not greater
then 0"
no-loop true
when
$context:Context($id:id,baselineParticipation==null ||
baselineParticipation.baselineRatio==null||baselineParticipation.baselineRatio==0)
then
modify($firm) {setBaselineParticipation(new
BaselineParticipation($id,new BigDecimal(0.00485)))};
end
rule "Calculate Participation Ratio"
no-loop true
when
$context:Context(consolidatdVolume!=null,consolidatdVolume.avgVolume!=0,
volumeAccumulations["total"]!=null,volumeAccumulations["total"]!=0,
$total:volumeAccumulations["total"],$avg:consolidatdVolume.avgVolume)
then
ConcurrentMap calculatedRatios=$firm.getCalculatedRatios();
calculatedRatios.put("participationRatio",new
BigDecimal($total/$avg));
modify($firm){setCalculatedRatios(calculatedRatios)};
end
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7:24 p.m.
I haven't read a statement yet that says that, in Drools, LHS terms,
separated by a comma (!) must be executed in the order they are
written, or that the C/Java semantics for logical expression
evaluation is applied.
-W
On 01/11/2013, gboro54 <gboro54(a)gmail.com> wrote:
Could you expand upon why this is a poor practice? I assumed that if
a part
of the pattern doesn't match the expression evaluation is terminated
laune wrote
> I can anticipate the answer where OP says that there is a constraint
> restricting argVolume to > 0. However, I don't think that independent
> constraints such as we see them in this rule are evaluated as if they
> were in a single logical expression, with Java semantics.
>
> The seductive possibility of binding to a half-baked expression (i.e.,
> $ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
> should be discarded. This value can safely be computed on the RHS
> where the denominator's value being !=0 is asserted.
>
> -W
>
> On 01/11/2013, Stephen Masters <
> stephen.masters@
> > wrote:
>> Divide by zero exceptions usually occur when you try to divide by zero.
>>
>> So … first question … is consolidatdVolume.avgVolume ever zero?
>>
>>
>> On 1 Nov 2013, at 16:17, gboro54 <
> gboro54@
> > wrote:
>>
>>> I have rules like the following:
>>>
>>> rule "Add Baseline to Context if it does not exists exists or not
>>> greater
>>> then 0"
>>> no-loop true
>>> when
>>> $context:Context($id:id,baselineParticipation==null ||
>>>
>>>
baselineParticipation.baselineRatio==null||baselineParticipation.baselineRatio==0)
>>> then
>>> modify($firm) {setBaselineParticipation(new
>>> BaselineParticipation($id,new
>>> BigDecimal(0.00485)))};
>>>
>>> end
>>>
>>> rule "Calculate Participation Ratio"
>>> no-loop true
>>> when
>>>
>>> $context:Context(consolidatdVolume!=null,consolidatdVolume.avgVolume>0,
>>>
>>>
volumeAccumulations["total"]!=null,volumeAccumulations["total"]>0,
>>>
>>> $ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
>>> then
>>> ConcurrentMap calculatedRatios=$firm.getCalculatedRatios();
>>> calculatedRatios.put("fparticipationRatio",new
BigDecimal($ratio));
>>> modify($firm){setCalculatedRatios(calculatedRatios)};
>>> end
>>>
>>> Despite the checks I get the following exception and any insight into
>>> why
>>> would be great:
>>>
>>> Exception executing consequence for rule "Calculate Firm Participation
>>> Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: / by
>>> zero
>>> Exception executing consequence for rule "Calculate Firm Participation
>>> Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: / by
>>> zero
>>> at
>>>
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)
>>> at
>>> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1297)
>>> at
>>> org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1221)
>>> at
>>> org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1456)
>>> at
>>>
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710)
>>> at
>>>
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674)
>>> at
>>>
org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230)
>>> at
>>>
com.nasdaq.fq.rms.workflow.processor.rules.PerformanceStatusAssignmentProcessor.doWork(PerformanceStatusAssignmentProcessor.java:156)
>>> at
>>> com.ften.ssr.workqueue.WorkItemRunnable.run(WorkItemRunnable.java:48)
>>> at
>>>
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>> at
>>>
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>> at java.lang.Thread.run(Thread.java:724)
>>> Caused by: java.lang.ArithmeticException: / by zero
>>> at ConditionEvaluatorda6271cf5a744b6bbdb9c717cae2edb7.evaluate(Unknown
>>> Source)
>>> at
>>> org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:200)
>>> at
>>> org.drools.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:157)
>>> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:154)
>>> at
>>>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>>> at
>>>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>>> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157)
>>> at
>>>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>>> at
>>>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>>> at
>>> org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314)
>>> at
>>> org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265)
>>> at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:483)
>>> at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:383)
>>> at
>>>
org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:337)
>>> at
>>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175.defaultConsequence(Unknown
>>> Source)
>>> at
>>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvokerGenerated.evaluate(Unknown
>>> Source)
>>> at
>>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvoker.evaluate(Unknown
>>> Source)
>>> at
>>> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287)
>>> ... 10 more
>>>
>>>
>>>
>>> --
>>> View this message in context:
>>>
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>>> Sent from the Drools: User forum mailing list archive at Nabble.com.
>>> _______________________________________________
>>> rules-users mailing list
>>>
> rules-users@.jboss
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>> _______________________________________________
>> rules-users mailing list
>>
> rules-users@.jboss
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>
> _______________________________________________
> rules-users mailing list
> rules-users@.jboss
> https://lists.jboss.org/mailman/listinfo/rules-users
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7:27 p.m.
I made an assumption(thus why I am asking) for future cases I will use the &&
separator to handle such cases as I would assume saying something like this
would work:
Object(a>0 && b>0 && a/b > 100)
laune wrote
I haven't read a statement yet that says that, in Drools, LHS
terms,
separated by a comma (!) must be executed in the order they are
written, or that the C/Java semantics for logical expression
evaluation is applied.
-W
On 01/11/2013, gboro54 <
gboro54@
> > wrote:
>> Could you expand upon why this is a poor practice? I assumed that if a
>> part
>> of the pattern doesn't match the expression evaluation is terminated
>>
>>
>> laune wrote
>>> I can anticipate the answer where OP says that there is a constraint
>>> restricting argVolume to > 0. However, I don't think that independent
>>> constraints such as we see them in this rule are evaluated as if they
>>> were in a single logical expression, with Java semantics.
>>>
>>> The seductive possibility of binding to a half-baked expression (i.e.,
>>> $ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
>>> should be discarded. This value can safely be computed on the RHS
>>> where the denominator's value being !=0 is asserted.
>>>
>>> -W
>>>
>>> On 01/11/2013, Stephen Masters <
>>
>>> stephen.masters@
>>
>>> > wrote:
>>>> Divide by zero exceptions usually occur when you try to divide by zero.
>>>>
>>>> So … first question … is consolidatdVolume.avgVolume ever zero?
>>>>
>>>>
>>>> On 1 Nov 2013, at 16:17, gboro54 <
>>
>> gboro54@
>>
>>> > wrote:
>>>>
>>>>> I have rules like the following:
>>>>>
>>>>> rule "Add Baseline to Context if it does not exists exists or
not
>>>>> greater
>>>>> then 0"
>>>>> no-loop true
>>>>> when
>>>>> $context:Context($id:id,baselineParticipation==null ||
>>>>>
>>>>>
baselineParticipation.baselineRatio==null||baselineParticipation.baselineRatio==0)
>>>>> then
>>>>> modify($firm) {setBaselineParticipation(new
>>>>> BaselineParticipation($id,new
>>>>> BigDecimal(0.00485)))};
>>>>>
>>>>> end
>>>>>
>>>>> rule "Calculate Participation Ratio"
>>>>> no-loop true
>>>>> when
>>>>>
>>>>>
$context:Context(consolidatdVolume!=null,consolidatdVolume.avgVolume>0,
>>>>>
>>>>>
volumeAccumulations["total"]!=null,volumeAccumulations["total"]>0,
>>>>>
>>>>>
$ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
>>>>> then
>>>>> ConcurrentMap calculatedRatios=$firm.getCalculatedRatios();
>>>>> calculatedRatios.put("fparticipationRatio",new
BigDecimal($ratio));
>>>>> modify($firm){setCalculatedRatios(calculatedRatios)};
>>>>> end
>>>>>
>>>>> Despite the checks I get the following exception and any insight
into
>>>>> why
>>>>> would be great:
>>>>>
>>>>> Exception executing consequence for rule "Calculate Firm
Participation
>>>>> Ratio" in com.nasdaq.rms.nq.status:
java.lang.ArithmeticException: /
>>>>> by
>>>>> zero
>>>>> Exception executing consequence for rule "Calculate Firm
Participation
>>>>> Ratio" in com.nasdaq.rms.nq.status:
java.lang.ArithmeticException: /
>>>>> by
>>>>> zero
>>>>> at
>>>>>
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)
>>>>> at
>>>>>
org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1297)
>>>>> at
>>>>>
org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1221)
>>>>> at
>>>>>
org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1456)
>>>>> at
>>>>>
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710)
>>>>> at
>>>>>
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674)
>>>>> at
>>>>>
org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230)
>>>>> at
>>>>>
com.nasdaq.fq.rms.workflow.processor.rules.PerformanceStatusAssignmentProcessor.doWork(PerformanceStatusAssignmentProcessor.java:156)
>>>>> at
>>>>>
com.ften.ssr.workqueue.WorkItemRunnable.run(WorkItemRunnable.java:48)
>>>>> at
>>>>>
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>>> at
>>>>>
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>>> at java.lang.Thread.run(Thread.java:724)
>>>>> Caused by: java.lang.ArithmeticException: / by zero
>>>>> at
>>>>> ConditionEvaluatorda6271cf5a744b6bbdb9c717cae2edb7.evaluate(Unknown
>>>>> Source)
>>>>> at
>>>>>
org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:200)
>>>>> at
>>>>>
org.drools.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:157)
>>>>> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:154)
>>>>> at
>>>>>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>>>>> at
>>>>>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>>>>> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157)
>>>>> at
>>>>>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>>>>> at
>>>>>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>>>>> at
>>>>>
org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314)
>>>>> at
>>>>>
org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265)
>>>>> at
org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:483)
>>>>> at
org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:383)
>>>>> at
>>>>>
org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:337)
>>>>> at
>>>>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175.defaultConsequence(Unknown
>>>>> Source)
>>>>> at
>>>>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvokerGenerated.evaluate(Unknown
>>>>> Source)
>>>>> at
>>>>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvoker.evaluate(Unknown
>>>>> Source)
>>>>> at
>>>>>
org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287)
>>>>> ... 10 more
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> View this message in context:
>>>>>
http://drools.46999.n3.nabble.com/Drools-5-5-divide-by-0-exception-tp4026...
>>>>> Sent from the Drools: User forum mailing list archive at Nabble.com.
>>>>> _______________________________________________
>>>>> rules-users mailing list
>>>>>
>>
>> rules-users@.jboss
>>
>>>>>>>>
>>>>
>>>> _______________________________________________
>>>> rules-users mailing list
>>>>
>>
>> rules-users@.jboss
>>
>>>>>>>
>>>
>>> _______________________________________________
>>> rules-users mailing list
>>
>> rules-users@.jboss
>>
>>>>
>>
>>
>>
>>
>> --
>> View this message in context:
>>
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>> Sent from the Drools: User forum mailing list archive at Nabble.com.
>>
>> _______________________________________________
>> rules-users mailing list
>>
rules-users@.jboss
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7:32 p.m.
Another question(on error interpretation) the stack trace seems to indicate
an issue with the consequence and not the condition. Should it be assumed
that seeing such errors could indicate an issue on either side of the rule?
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7:13 p.m.
Given that you don’t seem to using the result as a constraint, then I can’t see any
benefit to it being on the LHS. So yes, It would be better on the RHS.
Steve
On 1 Nov 2013, at 17:58, Wolfgang Laun <wolfgang.laun(a)gmail.com> wrote:
I can anticipate the answer where OP says that there is a constraint
restricting argVolume to > 0. However, I don't think that independent
constraints such as we see them in this rule are evaluated as if they
were in a single logical expression, with Java semantics.
The seductive possibility of binding to a half-baked expression (i.e.,
$ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
should be discarded. This value can safely be computed on the RHS
where the denominator's value being !=0 is asserted.
-W
On 01/11/2013, Stephen Masters <stephen.masters(a)me.com> wrote:
> Divide by zero exceptions usually occur when you try to divide by zero.
>
> So … first question … is consolidatdVolume.avgVolume ever zero?
>
>
> On 1 Nov 2013, at 16:17, gboro54 <gboro54(a)gmail.com> wrote:
>
>> I have rules like the following:
>>
>> rule "Add Baseline to Context if it does not exists exists or not greater
>> then 0"
>> no-loop true
>> when
>> $context:Context($id:id,baselineParticipation==null ||
>>
>>
baselineParticipation.baselineRatio==null||baselineParticipation.baselineRatio==0)
>> then
>> modify($firm) {setBaselineParticipation(new
>> BaselineParticipation($id,new
>> BigDecimal(0.00485)))};
>>
>> end
>>
>> rule "Calculate Participation Ratio"
>> no-loop true
>> when
>> $context:Context(consolidatdVolume!=null,consolidatdVolume.avgVolume>0,
>>
volumeAccumulations["total"]!=null,volumeAccumulations["total"]>0,
>>
$ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
>> then
>> ConcurrentMap calculatedRatios=$firm.getCalculatedRatios();
>> calculatedRatios.put("fparticipationRatio",new BigDecimal($ratio));
>> modify($firm){setCalculatedRatios(calculatedRatios)};
>> end
>>
>> Despite the checks I get the following exception and any insight into why
>> would be great:
>>
>> Exception executing consequence for rule "Calculate Firm Participation
>> Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: / by
>> zero
>> Exception executing consequence for rule "Calculate Firm Participation
>> Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: / by
>> zero
>> at
>>
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)
>> at
>> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1297)
>> at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1221)
>> at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1456)
>> at
>>
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710)
>> at
>>
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674)
>> at
>>
org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230)
>> at
>>
com.nasdaq.fq.rms.workflow.processor.rules.PerformanceStatusAssignmentProcessor.doWork(PerformanceStatusAssignmentProcessor.java:156)
>> at com.ften.ssr.workqueue.WorkItemRunnable.run(WorkItemRunnable.java:48)
>> at
>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>> at
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>> at java.lang.Thread.run(Thread.java:724)
>> Caused by: java.lang.ArithmeticException: / by zero
>> at ConditionEvaluatorda6271cf5a744b6bbdb9c717cae2edb7.evaluate(Unknown
>> Source)
>> at
>> org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:200)
>> at
>> org.drools.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:157)
>> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:154)
>> at
>>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>> at
>>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157)
>> at
>>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>> at
>>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>> at
>> org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314)
>> at
>> org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265)
>> at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:483)
>> at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:383)
>> at
>> org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:337)
>> at
>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175.defaultConsequence(Unknown
>> Source)
>> at
>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvokerGenerated.evaluate(Unknown
>> Source)
>> at
>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvoker.evaluate(Unknown
>> Source)
>> at
>> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287)
>> ... 10 more
>>
>>
>>
>> --
>> View this message in context:
>>
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>> Sent from the Drools: User forum mailing list archive at Nabble.com.
>> _______________________________________________
>> rules-users mailing list
>> rules-users(a)lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
> _______________________________________________
> rules-users mailing list
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>
_______________________________________________
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7:17 p.m.
Agreed. In this case it is possible to move to the RHS...but I have to ask
what if I need to use the math as part of a constraint. Is it not safe to
assume the divisor is 0 even if I do the check? That seems like an issue as
I do have cases which this will be required
Stephen Masters wrote
Given that you don’t seem to using the result as a constraint, then
I
can’t see any benefit to it being on the LHS. So yes, It would be better
on the RHS.
Steve
On 1 Nov 2013, at 17:58, Wolfgang Laun <
wolfgang.laun@
> wrote:
> I can anticipate the answer where OP says that there is a constraint
> restricting argVolume to > 0. However, I don't think that independent
> constraints such as we see them in this rule are evaluated as if they
> were in a single logical expression, with Java semantics.
>
> The seductive possibility of binding to a half-baked expression (i.e.,
> $ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
> should be discarded. This value can safely be computed on the RHS
> where the denominator's value being !=0 is asserted.
>
> -W
>
> On 01/11/2013, Stephen Masters <
stephen.masters@
> wrote:
>> Divide by zero exceptions usually occur when you try to divide by zero.
>>
>> So … first question … is consolidatdVolume.avgVolume ever zero?
>>
>>
>> On 1 Nov 2013, at 16:17, gboro54 <
gboro54@
> wrote:
>>
>>> I have rules like the following:
>>>
>>> rule "Add Baseline to Context if it does not exists exists or not
>>> greater
>>> then 0"
>>> no-loop true
>>> when
>>> $context:Context($id:id,baselineParticipation==null ||
>>>
>>>
baselineParticipation.baselineRatio==null||baselineParticipation.baselineRatio==0)
>>> then
>>> modify($firm) {setBaselineParticipation(new
>>> BaselineParticipation($id,new
>>> BigDecimal(0.00485)))};
>>>
>>> end
>>>
>>> rule "Calculate Participation Ratio"
>>> no-loop true
>>> when
>>>
>>> $context:Context(consolidatdVolume!=null,consolidatdVolume.avgVolume>0,
>>>
>>>
volumeAccumulations["total"]!=null,volumeAccumulations["total"]>0,
>>>
>>> $ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
>>> then
>>> ConcurrentMap calculatedRatios=$firm.getCalculatedRatios();
>>> calculatedRatios.put("fparticipationRatio",new
BigDecimal($ratio));
>>> modify($firm){setCalculatedRatios(calculatedRatios)};
>>> end
>>>
>>> Despite the checks I get the following exception and any insight into
>>> why
>>> would be great:
>>>
>>> Exception executing consequence for rule "Calculate Firm Participation
>>> Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: / by
>>> zero
>>> Exception executing consequence for rule "Calculate Firm Participation
>>> Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: / by
>>> zero
>>> at
>>>
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)
>>> at
>>> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1297)
>>> at
>>> org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1221)
>>> at
>>> org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1456)
>>> at
>>>
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710)
>>> at
>>>
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674)
>>> at
>>>
org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230)
>>> at
>>>
com.nasdaq.fq.rms.workflow.processor.rules.PerformanceStatusAssignmentProcessor.doWork(PerformanceStatusAssignmentProcessor.java:156)
>>> at
>>> com.ften.ssr.workqueue.WorkItemRunnable.run(WorkItemRunnable.java:48)
>>> at
>>>
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>> at
>>>
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>> at java.lang.Thread.run(Thread.java:724)
>>> Caused by: java.lang.ArithmeticException: / by zero
>>> at ConditionEvaluatorda6271cf5a744b6bbdb9c717cae2edb7.evaluate(Unknown
>>> Source)
>>> at
>>> org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:200)
>>> at
>>> org.drools.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:157)
>>> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:154)
>>> at
>>>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>>> at
>>>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>>> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157)
>>> at
>>>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>>> at
>>>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>>> at
>>> org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314)
>>> at
>>> org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265)
>>> at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:483)
>>> at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:383)
>>> at
>>>
org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:337)
>>> at
>>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175.defaultConsequence(Unknown
>>> Source)
>>> at
>>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvokerGenerated.evaluate(Unknown
>>> Source)
>>> at
>>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvoker.evaluate(Unknown
>>> Source)
>>> at
>>> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287)
>>> ... 10 more
>>>
>>>
>>>
>>> --
>>> View this message in context:
>>>
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>>> Sent from the Drools: User forum mailing list archive at Nabble.com.
>>> _______________________________________________
>>> rules-users mailing list
>>>
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>>>>
>>
>> _______________________________________________
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>>
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>>>
>
> _______________________________________________
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>
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7:35 p.m.
Am I wrong or these are not the (only) rules that are being run?
1) The exception is thrown as the consequence of a rule called
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175
"Rule Calculate Firm Participation Ratio", which is not shown.
2) The Rule "Add baseline to context..." modifies a $firm which is not
bound anywhere
in that rule..
3) Looking at the stack trace, the consequence happens in a MVEL
Constraint, which
is in an Alpha Node immediately after an ObjectTypeNode. This usually
means that
the failing constraint is the first in the pattern, which is not the
case in your
"Calculate Participation Ratio".
(to Wolfgang's point: it is not mandatory, since "and" is commutative,
but this is what
usually happens in practice)
You also have multiple threads... is that "avgVolume" computed using an
accumulate
somewhere? I wonder if there are critical races.....
On 11/01/2013 11:17 AM, gboro54 wrote:
Agreed. In this case it is possible to move to the RHS...but I have
to ask
what if I need to use the math as part of a constraint. Is it not safe to
assume the divisor is 0 even if I do the check? That seems like an issue as
I do have cases which this will be required
Stephen Masters wrote
> Given that you don’t seem to using the result as a constraint, then I
> can’t see any benefit to it being on the LHS. So yes, It would be better
> on the RHS.
>
> Steve
>
>
> On 1 Nov 2013, at 17:58, Wolfgang Laun <
> wolfgang.laun@
> > wrote:
>
>> I can anticipate the answer where OP says that there is a constraint
>> restricting argVolume to > 0. However, I don't think that independent
>> constraints such as we see them in this rule are evaluated as if they
>> were in a single logical expression, with Java semantics.
>>
>> The seductive possibility of binding to a half-baked expression (i.e.,
>> $ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
>> should be discarded. This value can safely be computed on the RHS
>> where the denominator's value being !=0 is asserted.
>>
>> -W
>>
>> On 01/11/2013, Stephen Masters <
> stephen.masters@
> > wrote:
>>> Divide by zero exceptions usually occur when you try to divide by zero.
>>>
>>> So … first question … is consolidatdVolume.avgVolume ever zero?
>>>
>>>
>>> On 1 Nov 2013, at 16:17, gboro54 <
> gboro54@
> > wrote:
>>>> I have rules like the following:
>>>>
>>>> rule "Add Baseline to Context if it does not exists exists or not
>>>> greater
>>>> then 0"
>>>> no-loop true
>>>> when
>>>> $context:Context($id:id,baselineParticipation==null ||
>>>>
>>>>
baselineParticipation.baselineRatio==null||baselineParticipation.baselineRatio==0)
>>>> then
>>>> modify($firm) {setBaselineParticipation(new
>>>> BaselineParticipation($id,new
>>>> BigDecimal(0.00485)))};
>>>>
>>>> end
>>>>
>>>> rule "Calculate Participation Ratio"
>>>> no-loop true
>>>> when
>>>>
>>>>
$context:Context(consolidatdVolume!=null,consolidatdVolume.avgVolume>0,
>>>>
>>>>
volumeAccumulations["total"]!=null,volumeAccumulations["total"]>0,
>>>>
>>>>
$ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
>>>> then
>>>> ConcurrentMap calculatedRatios=$firm.getCalculatedRatios();
>>>> calculatedRatios.put("fparticipationRatio",new
BigDecimal($ratio));
>>>> modify($firm){setCalculatedRatios(calculatedRatios)};
>>>> end
>>>>
>>>> Despite the checks I get the following exception and any insight into
>>>> why
>>>> would be great:
>>>>
>>>> Exception executing consequence for rule "Calculate Firm
Participation
>>>> Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: /
by
>>>> zero
>>>> Exception executing consequence for rule "Calculate Firm
Participation
>>>> Ratio" in com.nasdaq.rms.nq.status: java.lang.ArithmeticException: /
by
>>>> zero
>>>> at
>>>>
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)
>>>> at
>>>> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1297)
>>>> at
>>>> org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1221)
>>>> at
>>>> org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1456)
>>>> at
>>>>
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710)
>>>> at
>>>>
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674)
>>>> at
>>>>
org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230)
>>>> at
>>>>
com.nasdaq.fq.rms.workflow.processor.rules.PerformanceStatusAssignmentProcessor.doWork(PerformanceStatusAssignmentProcessor.java:156)
>>>> at
>>>> com.ften.ssr.workqueue.WorkItemRunnable.run(WorkItemRunnable.java:48)
>>>> at
>>>>
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>> at
>>>>
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>> at java.lang.Thread.run(Thread.java:724)
>>>> Caused by: java.lang.ArithmeticException: / by zero
>>>> at ConditionEvaluatorda6271cf5a744b6bbdb9c717cae2edb7.evaluate(Unknown
>>>> Source)
>>>> at
>>>>
org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:200)
>>>> at
>>>>
org.drools.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:157)
>>>> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:154)
>>>> at
>>>>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>>>> at
>>>>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>>>> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157)
>>>> at
>>>>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>>>> at
>>>>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>>>> at
>>>> org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314)
>>>> at
>>>> org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265)
>>>> at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:483)
>>>> at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:383)
>>>> at
>>>>
org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:337)
>>>> at
>>>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175.defaultConsequence(Unknown
>>>> Source)
>>>> at
>>>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvokerGenerated.evaluate(Unknown
>>>> Source)
>>>> at
>>>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvoker.evaluate(Unknown
>>>> Source)
>>>> at
>>>> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287)
>>>> ... 10 more
>>>>
>>>>
>>>>
>>>> --
>>>> View this message in context:
>>>>
http://drools.46999.n3.nabble.com/Drools-5-5-divide-by-0-exception-tp4026...
>>>> Sent from the Drools: User forum mailing list archive at Nabble.com.
>>>> _______________________________________________
>>>> rules-users mailing list
>>>>
> rules-users@.jboss
>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>
>>> _______________________________________________
>>> rules-users mailing list
>>>
> rules-users@.jboss
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>
>> _______________________________________________
>> rules-users mailing list
>>
> rules-users@.jboss
>> https://lists.jboss.org/mailman/listinfo/rules-users
>
> _______________________________________________
> rules-users mailing list
> rules-users@.jboss
> https://lists.jboss.org/mailman/listinfo/rules-users
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7:39 p.m.
$firm should be $context...To post the rule in the public sphere I had to
modify some variables(legal company issues :-) ). The same goes for the rule
name(my replacement of text is not very good).
I understand Wolfgang's point...I just made a poor assumption(something as
someone who has used drools for several years I shouldn't have done...every
once and a while I guess I get a brain fart)
Davide Sottara wrote
Am I wrong or these are not the (only) rules that are being run?
1) The exception is thrown as the consequence of a rule called
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175
"Rule Calculate Firm Participation Ratio", which is not shown.
2) The Rule "Add baseline to context..." modifies a $firm which is not
bound anywhere
in that rule..
3) Looking at the stack trace, the consequence happens in a MVEL
Constraint, which
is in an Alpha Node immediately after an ObjectTypeNode. This usually
means that
the failing constraint is the first in the pattern, which is not the
case in your
"Calculate Participation Ratio".
(to Wolfgang's point: it is not mandatory, since "and" is commutative,
but this is what
usually happens in practice)
You also have multiple threads... is that "avgVolume" computed using an
accumulate
somewhere? I wonder if there are critical races.....
On 11/01/2013 11:17 AM, gboro54 wrote:
> Agreed. In this case it is possible to move to the RHS...but I have to
> ask
> what if I need to use the math as part of a constraint. Is it not safe to
> assume the divisor is 0 even if I do the check? That seems like an issue
> as
> I do have cases which this will be required
>
>
> Stephen Masters wrote
>> Given that you don’t seem to using the result as a constraint, then I
>> can’t see any benefit to it being on the LHS. So yes, It would be better
>> on the RHS.
>>
>> Steve
>>
>>
>> On 1 Nov 2013, at 17:58, Wolfgang Laun <
>> wolfgang.laun@
>> > wrote:
>>
>>> I can anticipate the answer where OP says that there is a constraint
>>> restricting argVolume to > 0. However, I don't think that independent
>>> constraints such as we see them in this rule are evaluated as if they
>>> were in a single logical expression, with Java semantics.
>>>
>>> The seductive possibility of binding to a half-baked expression (i.e.,
>>> $ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
>>> should be discarded. This value can safely be computed on the RHS
>>> where the denominator's value being !=0 is asserted.
>>>
>>> -W
>>>
>>> On 01/11/2013, Stephen Masters <
>> stephen.masters@
>> > wrote:
>>>> Divide by zero exceptions usually occur when you try to divide by
>>>> zero.
>>>>
>>>> So … first question … is consolidatdVolume.avgVolume ever zero?
>>>>
>>>>
>>>> On 1 Nov 2013, at 16:17, gboro54 <
>> gboro54@
>> > wrote:
>>>>> I have rules like the following:
>>>>>
>>>>> rule "Add Baseline to Context if it does not exists exists or
not
>>>>> greater
>>>>> then 0"
>>>>> no-loop true
>>>>> when
>>>>> $context:Context($id:id,baselineParticipation==null ||
>>>>>
>>>>>
baselineParticipation.baselineRatio==null||baselineParticipation.baselineRatio==0)
>>>>> then
>>>>> modify($firm) {setBaselineParticipation(new
>>>>> BaselineParticipation($id,new
>>>>> BigDecimal(0.00485)))};
>>>>>
>>>>> end
>>>>>
>>>>> rule "Calculate Participation Ratio"
>>>>> no-loop true
>>>>> when
>>>>>
>>>>>
$context:Context(consolidatdVolume!=null,consolidatdVolume.avgVolume>0,
>>>>>
>>>>>
volumeAccumulations["total"]!=null,volumeAccumulations["total"]>0,
>>>>>
>>>>>
$ratio:(volumeAccumulations["total"]/consolidatdVolume.avgVolume))
>>>>> then
>>>>> ConcurrentMap calculatedRatios=$firm.getCalculatedRatios();
>>>>> calculatedRatios.put("fparticipationRatio",new
BigDecimal($ratio));
>>>>> modify($firm){setCalculatedRatios(calculatedRatios)};
>>>>> end
>>>>>
>>>>> Despite the checks I get the following exception and any insight
into
>>>>> why
>>>>> would be great:
>>>>>
>>>>> Exception executing consequence for rule "Calculate Firm
>>>>> Participation
>>>>> Ratio" in com.nasdaq.rms.nq.status:
java.lang.ArithmeticException: /
>>>>> by
>>>>> zero
>>>>> Exception executing consequence for rule "Calculate Firm
>>>>> Participation
>>>>> Ratio" in com.nasdaq.rms.nq.status:
java.lang.ArithmeticException: /
>>>>> by
>>>>> zero
>>>>> at
>>>>>
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)
>>>>> at
>>>>>
org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1297)
>>>>> at
>>>>>
org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1221)
>>>>> at
>>>>>
org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1456)
>>>>> at
>>>>>
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710)
>>>>> at
>>>>>
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674)
>>>>> at
>>>>>
org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230)
>>>>> at
>>>>>
com.nasdaq.fq.rms.workflow.processor.rules.PerformanceStatusAssignmentProcessor.doWork(PerformanceStatusAssignmentProcessor.java:156)
>>>>> at
>>>>>
com.ften.ssr.workqueue.WorkItemRunnable.run(WorkItemRunnable.java:48)
>>>>> at
>>>>>
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>>> at
>>>>>
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>>> at java.lang.Thread.run(Thread.java:724)
>>>>> Caused by: java.lang.ArithmeticException: / by zero
>>>>> at
>>>>> ConditionEvaluatorda6271cf5a744b6bbdb9c717cae2edb7.evaluate(Unknown
>>>>> Source)
>>>>> at
>>>>>
org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:200)
>>>>> at
>>>>>
org.drools.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:157)
>>>>> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:154)
>>>>> at
>>>>>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>>>>> at
>>>>>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>>>>> at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157)
>>>>> at
>>>>>
org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507)
>>>>> at
>>>>>
org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432)
>>>>> at
>>>>>
org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314)
>>>>> at
>>>>>
org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265)
>>>>> at
>>>>> org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:483)
>>>>> at
>>>>> org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:383)
>>>>> at
>>>>>
org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:337)
>>>>> at
>>>>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175.defaultConsequence(Unknown
>>>>> Source)
>>>>> at
>>>>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvokerGenerated.evaluate(Unknown
>>>>> Source)
>>>>> at
>>>>>
com.nasdaq.rms.nq.status.Rule_Calculate_Firm_Participation_Ratio_cfb033f33c2b404fb2bff8e1b9af0175DefaultConsequenceInvoker.evaluate(Unknown
>>>>> Source)
>>>>> at
>>>>>
org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287)
>>>>> ... 10 more
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> View this message in context:
>>>>>
http://drools.46999.n3.nabble.com/Drools-5-5-divide-by-0-exception-tp4026...
>>>>> Sent from the Drools: User forum mailing list archive at Nabble.com.
>>>>> _______________________________________________
>>>>> rules-users mailing list
>>>>>
>
rules-users@.jboss
>>>>>>>>
>>>> _______________________________________________
>>>> rules-users mailing list
>>>>
> rules-users@.jboss
>>>>>>>
>>> _______________________________________________
>>> rules-users mailing list
>>>
> rules-users@.jboss
>>>>
>> _______________________________________________
>> rules-users mailing list
> rules-users@.jboss
>>
>
>
>
> --
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>
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3829
days inactive
3829
days old
13 comments
4 participants
participants (4)
-
Davide Sottara -
gboro54 -
Stephen Masters -
Wolfgang Laun