Compilation fails when chaining methods with function calls as params --------------------------------------------------------------------- Key: DROOLS-5641 URL: https://issues.redhat.com/browse/DROOLS-5641 Project: Drools Issue Type: Bug Components: executable model Affects Versions: 7.43.0.Final Reporter: Ciprian Chiru Assignee: Luca Molteni Priority: Major Given the following rule: {code:java} global java.util.Set controlSet; global org.example.drools.service.DummyService dummyService; declare A x: String end rule "will execute per each Measurement having ID color" no-loop when $m: Measurement( id == "color", $colorVal : val ) $a: A() String() from dummyService.dummy($m.getSomethingBy($a.x), $a) then controlSet.add($colorVal); end{code}   The compilation fails with: {code:java} [...]/target/generated-sources/drools-model-compiler/main/java/rules/Rules7ad4e52deb9d4184b7d7e4646c172273RuleMethods0.java:[27,111] no suitable method found for from(org.drools.model.Global<org.example.drools.service.DummyService>,org.drools.model.Variable<rules.A>,org.drools.model.Variable<org.example.drools.model.Measurement>,rules.P45.LambdaExtractor4580D2619F79AA1C0CC3F15809293690) [ERROR] method org.drools.model.DSL.<T>from(T) is not applicable [ERROR] (cannot infer type-variable(s) T [ERROR] (actual and formal argument lists differ in length)) [ERROR] method org.drools.model.DSL.<T>from(org.drools.model.Variable<T>) is not applicable [ERROR] (cannot infer type-variable(s) T [ERROR] (actual and formal argument lists differ in length)) [ERROR] method org.drools.model.DSL.<T>from(org.drools.model.functions.Function0<T>) is not applicable [ERROR] (cannot infer type-variable(s) T [ERROR] (actual and formal argument lists differ in length)) [ERROR] method org.drools.model.DSL.<T>from(org.drools.model.Variable<T>,org.drools.model.functions.Function1<T,?>) is not applicable [ERROR] (cannot infer type-variable(s) T [ERROR] (actual and formal argument lists differ in length)) [ERROR] method org.drools.model.DSL.<A,B>from(org.drools.model.Variable<A>,org.drools.model.Variable<B>,org.drools.model.functions.Function2<A,B,?>) is not applicable [ERROR] (cannot infer type-variable(s) A,B [ERROR] (actual and formal argument lists differ in length)) [ERROR] method org.drools.model.DSL.<A,B,C>from(org.drools.model.Variable<A>,org.drools.model.Variable<B>,org.drools.model.Variable<C>,org.drools.model.functions.Function3<A,B,C,?>) is not applicable [ERROR] (inference variable B has incompatible equality constraints org.example.drools.model.Measurement,rules.A) [ERROR] method org.drools.model.DSL.<A,B,C,D>from(org.drools.model.Variable<A>,org.drools.model.Variable<B>,org.drools.model.Variable<C>,org.drools.model.Variable<D>,org.drools.model.functions.Function4<A,B,C,D,?>) is not applicable [ERROR] (cannot infer type-variable(s) A,B,C,D [ERROR] (actual and formal argument lists differ in length)){code}   This error is reproducible with the latest _7.44.0-SNAPSHOT_ . The parameters are flipped between the LambdaExtractor and the RuleMethods generated classes.