[rules-users] Using accumulate function

[sanal]

Hi,
      Iam trying to use the accumulate function of the drools.I need to
accumulate based on the result of a rule execution.
         Eg: Suppose i have list of orders and another list of conditions
for a particular package.I need to check weather each of the order is part
of package or not.
       Suppose  a qty limit is set to 1 for a item in package definition and
the item is ordered 2 times.
While checking the condition, both of the item will go under package.
Actually for second record the rule should get executed based on result of
the 1 record's rule execution and so on.
 So I require a looping rule execution.
How can i achive this using Drools.


Rule "Package Rate_21"
	salience 65515
	when
		$objOrderedComponents:AccumulatedComponent()
		$packageDefinition:PackageDefinition($packageId:packageId)
		$accumulatedQty:Number()
    	from accumulate(
$accQtyComponent:OrderedComponent(packageChargeRecordId==$packageId, $AccQty
: componentQty) from
$objOrderedComponents.getOrderedComponentList(),sum($AccQty ) )
		$orderedComponent:OrderedComponent($id1:componentKey,$qty:componentQty) 
from $objOrderedComponents.getOrderedComponentList() and
		$pkgComps:PackageComponent(componentKey==$id1,(quantityLmt
>=($qty+$accumulatedQty.intValue()))) from
$packageDefinition.getPackageComponentList()
	then
 		$orderedComponent.setIsComponentApplicable(true);
        $orderedComponent.setPackageChargeRecordId($packageId);      
end


Regards
Sanal.P

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