[rules-users] Help with Accumulate function

[Dwipin C]

Thanks Wolfgang. 

The issue here is that the accumulation has to happen at a higher level in
the object hierarchy, "Position" in this case. However, this is no direct
link between Position and PostitionPnlAttributionAmount ( which is being
accumulated). How do I tackle such a scenario?

$attibAmtType will be just one for the condition given, but there could be 
multiple $posPnlAmt within a Position. 

Thanks,
Dwipin



From:
Wolfgang Laun <wolfgang.laun at gmail.com>
To:
Rules Users List <rules-users at lists.jboss.org>
Date:
04/07/2011 02:08 PM
Subject:
Re: [rules-users] Help with Accumulate function
Sent by:
rules-users-bounces at lists.jboss.org



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

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