[jboss-jira] [JBoss JIRA] Closed: (JBRULES-1461) comment leads to org.mvel.PropertyAccessException

comment leads to org.mvel.PropertyAccessException ------------------------------------------------- Key: JBRULES-1461 URL: http://jira.jboss.com/jira/browse/JBRULES-1461 Project: JBoss Drools Issue Type: Bug Security Level: Public(Everyone can see) Affects Versions: 4.0.4 Reporter: Godmar Back I'm still fighting with Drools's parser. This code: package test; import java.util.ArrayList; import java.util.HashMap; dialect "mvel" rule "Rule #1" when then /* a comment */ System.out.println("hello world"); end produces: org.mvel.PropertyAccessException: unable to resolve property: ; at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:285) at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:107) at org.mvel.ASTNode.getReducedValueAccelerated(ASTNode.java:185) at org.mvel.MVELRuntime.execute(MVELRuntime.java:88) at org.mvel.CompiledExpression.getValue(CompiledExpression.java:107) at org.mvel.MVEL.executeExpression(MVEL.java:223) at org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:47) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:550) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:514) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:471) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:433) at org.libx.autodetect.DroolsDriver$Host.fireAllRules(DroolsDriver.java:63) at org.libx.autodetect.DroolsDriver.main(DroolsDriver.java:135) Caused by: org.mvel.PropertyAccessException: unable to resolve property: ; at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.getBeanProperty(ReflectiveAccessorOptimizer.java:373) at org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:254) ... 12 more but this works: package test; import java.util.ArrayList; import java.util.HashMap; dialect "mvel" rule "Rule #1" when then // a single-line comment System.out.println("hello world"); end It makes it *very* difficult to use Drools if one has to work around such silly bugs. As a matter of fact, Drools does not seem to handle the presence of multi-line comments in a RHS well. (Even though the documentation says they're ok: http://downloads.jboss.com/drools/docs/4.0.4.17825.GA/html_single/index.h... Not sure what is going on. I looked at: http://viewvc.jboss.org/cgi-bin/viewvc.cgi/labs/labs/jbossrules/branches/... which appears to be correct and sends multiline comments to ANTLR's hidden channel.