[jboss-jira] [JBoss JIRA] Closed: (JBRULES-2526) org.drools.rule.InvalidPatternException: "Required Declarations not bound" when using MVEL, and OR-ing evals together

org.drools.rule.InvalidPatternException: "Required Declarations not bound" when using MVEL, and OR-ing evals together ---------------------------------------------------------------------------------------------------------------------- Key: JBRULES-2526 URL: https://jira.jboss.org/browse/JBRULES-2526 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Components: drools-core (expert) Affects Versions: 5.1.0.CR1 Reporter: Chris DeLashmutt Assignee: Edson Tirelli Fix For: 5.1.0.CR1 Attachments: mvel-declarations-problem.zip There is an issue when using multiple groups of OR'd evals and the mvel dialect. Drools is throwing an InvalidPatternException complaining that there are unbound declarations. During tracing, it seems that the declaration was actually found, but offset for the pattern that is resolved in BuildUtils.checkUnboundDeclarations() line: 239 isn't <= the offset of the pattern that was passed in with the declarations to the method. Here is the rule: rule "MVEL with OR groups and Evals" when $fieldB: Field(name == "fieldB") $fieldC: Field(name == "fieldC") $fieldD: Field(name == "fieldD") $fieldE: Field(name == "fieldE") ( eval($fieldB != null) || eval($fieldC != null) ) ( eval($fieldD != null) || eval($fieldE != null) ) then insert( new Result("Found") ); end Here is the stack trace: Thread [main] (Suspended (exception InvalidPatternException)) BuildUtils.checkUnboundDeclarations(BuildContext, Declaration[]) line: 258 EvalBuilder.build(BuildContext, BuildUtils, RuleConditionElement) line: 40 GroupElementBuilder$AndBuilder.build(BuildContext, BuildUtils, RuleConditionElement) line: 130 GroupElementBuilder.build(BuildContext, BuildUtils, RuleConditionElement) line: 77 ReteooRuleBuilder.addSubRule(BuildContext, GroupElement, Rule) line: 155 ReteooRuleBuilder.addRule(Rule, InternalRuleBase, IdGenerator) line: 128 ReteooBuilder.addRule(Rule) line: 117 ReteooRuleBase.addRule(Rule) line: 409 ReteooRuleBase(AbstractRuleBase).addRule(Package, Rule) line: 638 ReteooRuleBase(AbstractRuleBase).addPackages(Collection<Package>) line: 520 ReteooRuleBase.addPackage(Package) line: 435 TestDeclarations.testDeclarations() line: 41 ... (some stack removed for clarity) RemoteTestRunner.main(String[]) line: 197