[rules-users] drools arithmetics without eval()

I have a question regarding eval() use. My rulebase is around ~3k rules, most of them are auto-generated by templates, and they end up looking like this: rule "CONFIG_114" salience 0 when client: Client() contextProd: PortfolioProduct(prodAdded == true, productId == "PROFESSIONAL") Number(qty_00001: intValue) from accumulate(pp: PortfolioProduct(productId in ("BOX_001"), prodAdded == true), count(pp)) Number(qty_00002: intValue) from accumulate(pp: PortfolioProduct(productId in ("BOX_002"), prodAdded == true), count(pp)) Number(qty_00003: intValue) from accumulate(pp: PortfolioProduct(productId in ("BOX_003"), prodAdded == true), count(pp)) Number(qty_00004: intValue) from accumulate(pp: PortfolioProduct(productId in ("BOX_004"), prodAdded == true), count(pp)) Number(qty_00005: intValue) from accumulate(pp: PortfolioProduct(productId in ("BOX_005"), prodAdded == true), count(pp)) eval(qty_00001 == 1) not(eval(qty_00002 >= (qty_00003 + qty_00004 + qty_00005))) then balance(kcontext, contextProd, qty_00002, ">=", (qty_00003 + qty_00004 + qty_00005)); end These rules have all one or two evals in the end, comparing product quantities that are present in the Working Memory. My question is: Is there any better way to write this kind of rules without resorting to eval()? I'm currently getting hit (in performance terms) by over-using these, so I wonder if there is a better way to do this. Thanks! Tiago Lopes -- View this message in context: http://drools.46999.n3.nabble.com/drools-arithmetics-without-eval-tp38232... Sent from the Drools: User forum mailing list archive at Nabble.com.