[jboss-jira] [JBoss JIRA] (JBRULES-3000) Free form expression <field> != <object>.<method>(...) fails to parse

Free form expression <field> != <object>.<method>(...) fails to parse --------------------------------------------------------------------- Key: JBRULES-3000 URL: https://issues.jboss.org/browse/JBRULES-3000 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Components: drools-compiler (expert) Affects Versions: 3.0.4 Reporter: Wolfgang Laun Assignee: Edson Tirelli Fix For: 5.5.0.Beta1 According to Drools Introduction 2.1.3.1. Free Form expressions in Constraints (New Parser) "free form" expressions should be possible. However, the rule shown below does not compile and a stack dump is printed, (The legacy form using a return value restriction works correctly.) public abstract class BinOp { private Pin inPin1; private Pin inPin2; private Pin outPin; public BinOp( Pin inPin1, Pin inPin2, Pin outPin ){ this.inPin1 = inPin1; this.inPin2 = inPin2; this.outPin = outPin; } public Pin getInPin1() { return inPin1; } public Pin getInPin2() { return inPin2; } public Pin getOutPin() { return outPin; } protected abstract boolean op( boolean x, boolean y ); public boolean op( Pin x, Pin y ){ return op( x.isValue(), y.isValue() ); } } public class Pin { private boolean value; public Pin(){ } public boolean isValue(){ return value; } public void setValue( boolean value ){ this.value = value; } } rule "gate with two inputs" when $binOp : BinOp( $inPin1 : inPin1, $inPin2 : inPin2, $outPin : outPin ) Pin( this == $inPin1 ) Pin( this == $inPin2 ) Pin( this == $outPin, value != ( $binOp.op( $inPin1, $inPin2 ) ) ) then //... end Error message + stack dump: Exception in thread "main" [Error: Failed to compile: 2 compilation error(s): - (1,5) unable to resolve method using strict-mode: appl.circuit.BinOp.$inPin1() - (1,5) unqualified type in strict mode for: $inPin1] [Near : {... op( $inPin1, $inPin2 ) ....}] ^ [Line: 1, Column: 5] at org.mvel2.compiler.ExpressionCompiler.compile(ExpressionCompiler.java:95) at org.mvel2.MVEL.compileExpression(MVEL.java:829) at org.drools.base.extractors.MVELClassFieldReader.<init>(MVELClassFieldReader.java:64) at org.drools.rule.builder.PatternBuilder.createDeclarationObject(PatternBuilder.java:976) at org.drools.rule.builder.PatternBuilder.createDeclarationObject(PatternBuilder.java:939) at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:582) at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:242) at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:61) at org.drools.rule.builder.GroupElementBuilder.build(GroupElementBuilder.java:65) at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:81) at org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1546) at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:653) at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:295) at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:471) at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)