Hi,

I am using Drools version 5.0 . I am facing an issue in my LHS that I haven’t been able to figure out how to resolve :-

The rule looks like this :-

when

    $customerCart : CustomerGrid($c_holdings : cartHoldings, $c_productTypes: productTypes, $c_details : customerDetails)

    $productType : java.lang.String() from $c_productTypes

    $productType_total : Double()

                        from accumulate (

                            CustomerHolding(productType == $productType, $value : percent) from $c_holdings,

                            sum ($value)

                        )

    $ch : CustomerHolding (productType == $productType, $group : productGroup) from $c_holdings

    $productType_reference : CustomerDetail(identifier (== $productType || == $group) , $productType_limit : purchaseLimit)

                                                                            from $c_details

    eval ($productType_limit < Math.abs($productType_total.doubleValue()))          

then

                System.out.println(“XYZ”);

End

The issue is with this line of code

    $ch : CustomerHolding (productType == $productType, $group : productGroup) from $c_holdings

This will get executed as many times as there are number of  CustomerHolding objects for the given  $productType in the $c_holdings collection.

All I need to do is simply get the Associated $group with the $productType and thus should only get executed once.

Any idea how to go about writing this rule ?

Also is there a better way to write this rule ?

Regards,

Akash