[rules-users] Collect just first instance using the FROM CE

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 -------------------------------------------------------------------------- NOTICE: Morgan Stanley is not acting as a municipal advisor and the opinions or views contained herein are not intended to be, and do not constitute, advice within the meaning of Section 975 of the Dodd-Frank Wall Street Reform and Consumer Protection Act. If you have received this communication in error, please destroy all electronic and paper copies and notify the sender immediately. Mistransmission is not intended to waive confidentiality or privilege. Morgan Stanley reserves the right, to the extent permitted under applicable law, to monitor electronic communications. This message is subject to terms available at the following link: http://www.morganstanley.com/disclaimers. If you cannot access these links, please notify us by reply message and we will send the contents to you. By messaging with Morgan Stanley you consent to the foregoing.