[rules-users] Help with Accumulate function

[Wolfgang Laun]

One way to exclude siblings for a fact X is to use a constraint such
as "there is no other X with an identifying, comparable id < than the
only one I want".

  X( $id: id, $interesting: interesting )
  not X( id < $id )

-W


On 7 April 2011 10:37, Wolfgang Laun <wolfgang.laun at gmail.com> wrote:
> Well, this explains it - you'll have to find the selecting combination
> of $posPnlAmt and $attibAmtType in a unique way, assuming there is
> just one such combination.
>
> -W
>
>
>
>
> 2011/4/7 Dwipin C <dwipin.c at tcs.com>
>>
>> Without the accumulate function, following is the fire occurrence-
>>
>> $position : Position() - 2
>> $posScn : PositionScenario(scenario == 'SCEN-EOD', position == $position ) - 2 ( with all above facts)
>> $posScnGrp : PositionScenarioCurrencyGroup(positionScenario == $posScn, currencyType == CurrencyTypes.TRANSACTIONAL) - 2 ( with all above facts)
>> $posPnlAmt : PositionPnlAmount(pnlAmountType == "DTD", positionScenarioCurrencyGroup == $posScnGrp) - 3 ( with all above facts)
>>
>> $attibAmtType : AttributionAmountType(attributionAmountType == "UNEXPLAINED/RESIDUALPNL") - 2 (just this fact)
>>
>> All of them together without the accumulate fires it 6 times.
>>
>>
>> Dwipin
>>
>>
>>
>> From: Wolfgang Laun <wolfgang.laun at gmail.com>
>> To: Rules Users List <rules-users at lists.jboss.org>
>> Date: 04/07/2011 01:16 PM
>> Subject: Re: [rules-users] Help with Accumulate function
>> Sent by: rules-users-bounces at lists.jboss.org
>> ________________________________
>>
>>
>> Repeated firing may be due to there being more than one scope for accumulating
>> the sum, as selected by the patterns leading up to the accumulate.
>>
>> If you take only the patterns preceding the accumulate - how often does this fire and for which elements? You need a single combination of $posPnlAm and $attibAmtType.
>>
>> -W
>>
>>
>> On 7 April 2011 08:44, dwipin <dwipin.c at tcs.com> wrote:
>> Hi,
>>  I am having trouble implementing this rule with the accumulate function.
>> My rule requirement is -
>> Aggregate all PnlAttributionAmounts with a type of "UNEXPLAINED" for all
>> Positions for a given day.
>>
>> Below is the code I have for this -
>>
>> $position : Position(date == $currDate)
>> $posScn : PositionScenario(scenario == 'SCEN-EOD', position == $position )
>> $posScnGrp : PositionScenarioCurrencyGroup(positionScenario == $posScn,
>> currencyType == CurrencyTypes.TRANSACTIONAL)
>> $posPnlAmt : PositionPnlAmount(pnlAmountType == "DTD",
>> positionScenarioCurrencyGroup == $posScnGrp)
>> $attibAmtType : AttributionAmountType(attributionAmountType ==
>> "UNEXPLAINED/RESIDUALPNL")
>>
>> $totalPnlAttibAmt : BigDecimal()
>>        from accumulate(
>>                PositionPnlAttributionAmount(positionPnlAmount ==
>> $posPnlAmt, attributionAmountType == $attibAmtType, $pnlAttibAmt :
>> financialValue)
>>                ,sum($pnlAttibAmt)
>>        )
>>
>> eval ($totalPnlAttibAmt > 1000)
>>
>> When I do it this way, the rule gets executed 6 times, basically for every
>> fact that evaluated to true. How do I restrict this? The rule should be
>> executed only if the final eval results in true.
>>
>> Thanks for any help,
>> Dwipin.
>>
>>
>> --
>> View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Help-with-Accumulate-function-tp2789194p2789194.html
>> Sent from the Drools - User mailing list archive at Nabble.com.
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