[rules-users] Performace Issues drools

[Wolfgang Laun]

Hi,

this is better, but I'm missing the fact to which
     $objOrderedComponents
is bound.

However, you will have to use a somewhat different approach, one which
is based on the availability of OrderedComponent's and
PackageComponent's as individula facts. This is the way to avoid these
repeating accumulates. You'll still have to use accumulate for doing
the sums, but one sum will only be computed once.

-W



On 11/04/2012, sanal <sanal.p at icthealth.com> wrote:
>
> Hi,
>        Iam trying to use Drools for implementing some of the business logic
> in hospital billing senario.My senario is as given.Iam implementing the
> concept of  a packge. A package is a set of services or items  are put
> together based on some contions. Only the packge is to be charged not the
> individal services or items in the package.
>
> Eg: A Health Package is defined with name  ExecutiveHealthCheckUp, which
> have a condition say,quntity limit 2 for Laboratory tests.So if more than 2
> test is ordered for a patient the 3rd ordered test should not be part of
> package.
>
>      A ordered service is considered to be part of a package if the
> packageChargeRecordId property of the service
>
>     Using Drools iam trying to find out each of the ordered services(
> $orderedComponent)  for the patient to be part of package or not. Each of
> the ordered service have quntity field.So i need to sum the quntity field of
> same services ordered multiple times which is already part of the same
> package and compare it with the quntity limit defined in the package
> definition.
>
> If a service is part of package iam setting packageChargeRecordId property
> of ordered service to the packageId.
>
>
> For implementing the same i have 2 set of collecton.
>
> 1st collection has got list of ordered services for the
> patient.($objOrderedComponents.getOrderedComponentList() )
>
>
> 2nd collection list of condition for the services to be part of package.
> ($packageDefinition.getPackageComponentList())
>
>
>
>
> rule "Package Rate_21"
>         salience 65515
>         when
>                  /*package defanition object */
>                 $packageDefinition:PackageDefinition($packageId:packageId)
>
>                 /*Gets the list of services ordered */
>
> $orderedComponent:OrderedComponent($id1:componentKey,$qty:componentQty)
> from        $objOrderedComponents.getOrderedComponentList() and
>
>                 /*trying to get the accumulated quantity for the services
> which are already part of package */
>                 $accumulatedQty:Number()
>     	from accumulate (
> $accQtyComponent:OrderedComponent(packageChargeRecordId==$packageId,componentKey==$id1,
> $AccQty : componentQty) from
> $objOrderedComponents.getOrderedComponentList(),sum($AccQty ) )
>
> and
>                /*Comparing withe packakage definition rule */
>                 $pkgComps:PackageComponent(componentKey==$id1,(quantityLmt
>>=($qty+$accumulatedQty.intValue()))) from
> $packageDefinition.getPackageComponentList()	
>
>
>         then
>              /*setting the packagechargerecordId for the ordered services
> which satisfies above conditions */
>              $orderedComponent.setPackageChargeRecordId($packageId);
>
>              /*The changes have happened in facts so updating in the working
> memory so the rule get executed once again*/
>              modify ($objOrderedComponents){};
> end		
>
>          The problem i am facing here is of performance. This way of
> implementation is taking  much time compared to that of java code.If  iam
> not using accumulate function and iam executing the rules for each item
> seperatly instead of passing entire collection,it is working much better.
>
>            Can anbody suggest a better way to implement it using drools.
>
>
> Regards
> Sanal.P
>
>
>
>
>
>
>
> --
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