[jboss-jira] [JBoss JIRA] (DROOLS-5216) Rule compilation error when binding fields indexed with square brackets

Rule compilation error when binding fields indexed with square brackets ----------------------------------------------------------------------- Key: DROOLS-5216 URL: https://issues.redhat.com/browse/DROOLS-5216 Project: Drools Issue Type: Bug Components: core engine Affects Versions: 7.35.0.Final Reporter: Matteo Casalino Assignee: Mario Fusco Priority: Major Attachments: binding-field-indexed-with-square-brackets.zip Executable model rule compilation fails on patters that bind a collection field indexed with square brackets Example of DRL that fails to compile: {noformat} rule "binding field indexed with square brackets" when Pojo($firstItem : integerList[0]) Pojo(integerList[this.integerList.size()-1] == $firstItem) then end {noformat} Error: {noformat} Message [id=1, level=ERROR, path=src/main/java/org/drools/reproducer/RulesE96881902F91EBF30C7D6404720A1A94RuleMethods0.java, line=29, column=138 text=no suitable method found for bind(org.drools.model.Variable<java.util.Map>,(org.drool[...]et(0)) method org.drools.model.PatternDSL.PatternDef.<A>bind(org.drools.model.Variable<A>,org.drools.model.functions.Function1<org.drools.reproducer.Pojo,A>) is not applicable (inference variable A has incompatible bounds equality constraints: java.util.Map lower bounds: java.lang.Integer) method org.drools.model.PatternDSL.PatternDef.<A>bind(org.drools.model.Variable<A>,org.drools.model.functions.Function1<org.drools.reproducer.Pojo,A>,org.drools.model.PatternDSL.ReactOn) is not applicable (cannot infer type-variable(s) A (actual and formal argument lists differ in length)) method org.drools.model.PatternDSL.PatternDef.<A,U>bind(org.drools.model.Variable<A>,org.drools.model.Variable<U>,org.drools.model.functions.Function1<U,A>) is not applicable (cannot infer type-variable(s) A,U (actual and formal argument lists differ in length)) {noformat} The example works fine when compiling without executable model. Furthermore, the same example expressed with OOPath fails to compile *both with and without executable model*: {noformat} rule "binding field indexed with square brackets in OOPath" when Pojo($firstItem : /integerList[0]) Pojo(/integerList[this.integerList.size()-1] == $firstItem) then end {noformat} Error without executable model: {noformat} Message [id=1, kieBase=binding-field-indexed-with-square-brackets, level=ERROR, path=org/drools/reproducer/rules.drl, line=4, column=0 text=Unable to Analyse Expression /integerList[this.integerList.size()-1] == $firstItem: [Error: Missing left node] [Near : {... /integerList[this.integerList.size()-1] == $firstItem ....}] {noformat} Error with executable model: {noformat} Message [id=1, kieBase=binding-field-indexed-with-square-brackets, level=ERROR, path=org/drools/reproducer/rules.drl, line=-1, column=0 text=Unknown field integerList on class java.lang.Integer] {noformat}