[jboss-jira] [Red Hat JIRA] (DROOLS-5954) Variable binding of a Map element causes compilation errors in executable model.

Variable binding of a Map element causes compilation errors in executable model. -------------------------------------------------------------------------------- Key: DROOLS-5954 URL: https://issues.redhat.com/browse/DROOLS-5954 Project: Drools Issue Type: Bug Components: executable model Reporter: Luca Molteni Assignee: Luca Molteni Priority: Major Labels: support Building a rule written in MVEL dialect like (\*1) that accesses to a Map element and bind the value to a variable (\*1-1) in executable rule model, compilation errors occur. The error messages are varied depending on RHDM version. (\*2-1), (\*2-2), (\*2-3) are the error messages on 7.5.0 to 7.6.0, 7.7.0 to 7.7.1, 7.8.0 to 7.9.0 respectively. (\*1) {noformat} package com.example.reproducer import com.example.reproducer.Car dialect "mvel" rule "rule1a1" when $car : Car( $spec : specifications["transmission"] ) // ..... (*1-1) then System.out.println("***** Action of rule1a1"); System.out.println("***** $car: " + $car + ", transmission specification = " + $spec); end {noformat} Where {{specifications}} is a {{Map<String, Object>}} type property. Even if the type is {{Map<String, String>}} (rule "rule1a2" in Sample.drl), the same error occurs as well. (\*2-1) Error messages on RHDM 7.5.0 to 7.6.0 {noformat} [ERROR] /work2/testdir/reproducer_mc_1a1_1a2/target/generated-sources/drools-model-compiler/main/java/com/example/reproducer/Rules99a3451765bf47d5beed5aa17ec5250eRuleMethods0.java:[27,86] incompatible types: inference variable A has incompatible bounds equality constraints: java.util.Map lower bounds: java.lang.Object [ERROR] /work2/testdir/reproducer_mc_1a1_1a2/target/generated-sources/drools-model-compiler/main/java/com/example/reproducer/Rules99a3451765bf47d5beed5aa17ec5250eRuleMethods0.java:[27,61] method build in class org.drools.model.impl.RuleBuilder cannot be applied to given types; required: org.drools.model.RuleItemBuilder<?>[] found: <any>,org.drools.model.consequences.ConsequenceBuilder._2<com.example.reproducer.Car,java.util.Map> reason: varargs mismatch; inference variable A has incompatible bounds equality constraints: java.util.Map lower bounds: java.lang.Object {noformat} (\*2-2) Error messages on RHDM 7.7.0 to 7.7.1 {noformat} [ERROR] /work2/testdir/reproducer_mc_1a1_1a2/target/generated-sources/drools-model-compiler/main/java/com/example/reproducer/Rules4931e491d49648edb0d8704c825666f7RuleMethods0.java:[27,80] no suitable method found for bind(org.drools.model.Variable<java.util.Map>,(com.examp[...]ber")) method org.drools.model.PatternDSL.PatternDef.<A>bind(org.drools.model.Variable<A>,org.drools.model.functions.Function1<com.example.reproducer.Car,A>) is not applicable (inference variable A has incompatible bounds equality constraints: java.util.Map lower bounds: java.lang.String) method org.drools.model.PatternDSL.PatternDef.<A>bind(org.drools.model.Variable<A>,org.drools.model.functions.Function1<com.example.reproducer.Car,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)) 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>,org.drools.model.PatternDSL.ReactOn) is not applicable (cannot infer type-variable(s) A,U (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.Function2<com.example.reproducer.Car,U,A>) is not applicable (cannot infer type-variable(s) A,U (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.Function2<com.example.reproducer.Car,U,A>,org.drools.model.PatternDSL.ReactOn) is not applicable (cannot infer type-variable(s) A,U (actual and formal argument lists differ in length)) method org.drools.model.PatternDSL.PatternDef.<A,U,V>bind(org.drools.model.Variable<A>,org.drools.model.Variable<U>,org.drools.model.Variable<V>,org.drools.model.functions.Function3<com.example.reproducer.Car,U,V,A>) is not applicable (cannot infer type-variable(s) A,U,V (actual and formal argument lists differ in length)) method org.drools.model.PatternDSL.PatternDef.<A,U,V>bind(org.drools.model.Variable<A>,org.drools.model.Variable<U>,org.drools.model.Variable<V>,org.drools.model.functions.Function3<com.example.reproducer.Car,U,V,A>,org.drools.model.PatternDSL.ReactOn) is not applicable (cannot infer type-variable(s) A,U,V (actual and formal argument lists differ in length)) method org.drools.model.PatternDSL.PatternDef.<A,U,V,W>bind(org.drools.model.Variable<A>,org.drools.model.Variable<U>,org.drools.model.Variable<V>,org.drools.model.Variable<W>,org.drools.model.functions.Function4<com.example.reproducer.Car,U,V,W,A>) is not applicable (cannot infer type-variable(s) A,U,V,W (actual and formal argument lists differ in length)) method org.drools.model.PatternDSL.PatternDef.<A,U,V,W>bind(org.drools.model.Variable<A>,org.drools.model.Variable<U>,org.drools.model.Variable<V>,org.drools.model.Variable<W>,org.drools.model.functions.Function4<com.example.reproducer.Car,U,V,W,A>,org.drools.model.PatternDSL.ReactOn) is not applicable (cannot infer type-variable(s) A,U,V,W (actual and formal argument lists differ in length)) {noformat} (\*2-3) Error messages on RHDM 7.8.0 to 7.9.0 {noformat} [ERROR] /work2/testdir/reproducer_mc_1a1_1a2/target/generated-sources/drools-model-compiler/main/java/com/example/reproducer/PBE/LambdaExtractorBE8AE82BEE077650A708E067B870D9AE.java:[17,45] incompatible types: java.lang.Object cannot be converted to java.util.Map {noformat}