executable-model wrongly calculates in eval with parenthesis ------------------------------------------------------------ Key: DROOLS-4560 URL: https://issues.jboss.org/browse/DROOLS-4560 Project: Drools Issue Type: Bug Components: executable model Affects Versions: 7.27.0.Final Environment: - executable-model Reporter: Toshiya Kobayashi Assignee: Luca Molteni Priority: Major Labels: support executable-model wrongly calculates in eval with parenthesis. For example, with this rule, {noformat} import org.drools.modelcompiler.domain.CalcFact;rule R when $p : CalcFact( $v1 : value1, $v2 : value2 ) eval( ($v1 / ($v2 * 10) * 10) > 25 ) then end {noformat} if $v1 = 1 and $v2 = 1, ($v1 / ($v2 * 10) * 10) is 1. So the rule should not fire. However, executable-model generates Java code: {code:java} public class Rules4A265EF484FEEE0E4E84E77B3DEB48F9RuleMethods0 { /** * Rule name: R */ public static org.drools.model.Rule rule_R() { final org.drools.model.Variable<org.drools.modelcompiler.domain.CalcFact> var_$p = D.declarationOf(org.drools.modelcompiler.domain.CalcFact.class, "$p"); final org.drools.model.Variable<Double> var_$v1 = D.declarationOf(Double.class, "$v1"); final org.drools.model.Variable<Double> var_$v2 = D.declarationOf(Double.class, "$v2"); org.drools.model.Rule rule = D.rule("R").build(D.bind(var_$v1).as(var_$p, (_this) -> _this.getValue1()).reactOn("value1"), D.bind(var_$v2).as(var_$p, (_this) -> _this.getValue2()).reactOn("value2"), D.expr("454A1C822808AC7491268E4F381F0EDA", var_$v1, var_$v2, ($v1, $v2) -> org.drools.modelcompiler.util.EvaluationUtil.greaterThanNumbers($v1 / $v2 * 10 * 10, 25d)), D.execute(() -> { })); return rule; } } {code} See that parentheses are removed so ($v1 / $v2 * 10 * 10) becomes 100.