Re: [rules-users] Weird classloader problem

I actually got it to compile and work by prefixing the new var with $. Maybe it's a bug where the parser/compiler messes up, when a variable has no prefix and the same name as a class but in lowercase?! Is this even possible? Anyway if someone has a similar problem, maybe this helps :) Cheers, Alex Am 18.11.2013 um 14:13 schrieb Martin Minka <martin.minka(a)gmail.com&gt;: > I had similar problem and it was solved in 6.0.0.CR5. > > > 2013/11/18 Alexander Herwix <alex(a)herwix.com&gt; > Hey guys, > > using Drools 6 RC4. I have a simple rule which should cast an object into a specialized object (if it is indeed a specialization) and insert that into the session. > > rule "Obj is SpecialObject" > salience 201 > when > > $mainObj : MainObj(obj.class == SpecialObject.class, $obj : obj) > then > System.out.println("Obj is SpecialObj"); > > SpecialObj specialObj = (SpecialObj) $obj; > insert(specialObj); > end > > This rule doesn't even compile and I get a nasty error: NoClassDefFoundError: com/iterranux/droolsjbpmHumanTask/domain/team__I (wrong name: com/iterranux/droolsjbpmHumanTask/domain/Team__I). > > I mean it looks like the Class is present, but somehow it's lowercased somewhere. It's weird I can use some other obj but this doesn't work. Anyone seen something like this before? Maybe some other way to do what I want to do? I tried to declare a trait and don that obj with that but same result. > > Another question would be if it is really necessary to insert the object as a new fact, or could I access the nested property directly in a rule and typecast it there somehow? > > Cheers, Alex > > Error java.lang.RuntimeException: Reloading agent exited via exception, please raise a jira > | Error at org.springsource.loaded.agent.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:104) > | Error at sun.instrument.TransformerManager.transform(TransformerManager.java:188) > | Error at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:424) > | Error at java.lang.ClassLoader.defineClass1(Native Method) > | Error at java.lang.ClassLoader.defineClass(ClassLoader.java:791) > | Error at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) > | Error at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) > | Error at java.net.URLClassLoader.access$100(URLClassLoader.java:71) > | Error at java.net.URLClassLoader$1.run(URLClassLoader.java:361) > | Error at java.net.URLClassLoader$1.run(URLClassLoader.java:355) > | Error at java.security.AccessController.doPrivileged(Native Method) > | Error at java.net.URLClassLoader.findClass(URLClassLoader.java:354) > | Error at java.lang.ClassLoader.loadClass(ClassLoader.java:423) > | Error at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:648) > | Error at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:758) > | Error at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:746) > | Error at java.lang.Class.forName0(Native Method) > | Error at java.lang.Class.forName(Class.java:266) > | Error at org.drools.core.common.ProjectClassLoader.loadClass(ProjectClassLoader.java:80) > | Error at java.lang.ClassLoader.loadClass(ClassLoader.java:356) > | Error at java.lang.Class.forName0(Native Method) > | Error at java.lang.Class.forName(Class.java:266) > | Error at org.mvel2.ParserConfiguration.checkForDynamicImport(ParserConfiguration.java:163) > | Error at org.mvel2.ParserConfiguration.hasImport(ParserConfiguration.java:191) > | Error at org.mvel2.ParserContext.hasImport(ParserContext.java:360) > | Error at org.mvel2.compiler.AbstractParser.createPropertyToken(AbstractParser.java:1341) > | Error at org.mvel2.compiler.AbstractParser.nextToken(AbstractParser.java:846) > | Error at org.mvel2.compiler.ExpressionCompiler._compile(ExpressionCompiler.java:128) > | Error at org.mvel2.compiler.ExpressionCompiler.compile(ExpressionCompiler.java:62) > | Error at org.mvel2.MVEL.analyze(MVEL.java:680) > | Error at org.mvel2.compiler.PropertyVerifier.getMethod(PropertyVerifier.java:536) > | Error at org.mvel2.compiler.PropertyVerifier.analyze(PropertyVerifier.java:120) > | Error at org.mvel2.compiler.ExpressionCompiler.verify(ExpressionCompiler.java:381) > | Error at org.mvel2.compiler.ExpressionCompiler._compile(ExpressionCompiler.java:273) > | Error at org.mvel2.compiler.ExpressionCompiler.compile(ExpressionCompiler.java:62) > | Error at org.mvel2.MVEL.analyze(MVEL.java:680) > | Error at org.mvel2.MVEL.analyze(MVEL.java:685) > | Error at org.drools.compiler.rule.builder.dialect.mvel.MVELExprAnalyzer.analyzeExpression(MVELExprAnalyzer.java:114) > | Error at org.drools.compiler.rule.builder.dialect.mvel.MVELDialect.analyzeBlock(MVELDialect.java:539) > | Error at org.drools.compiler.rule.builder.dialect.mvel.MVELConsequenceBuilder.build(MVELConsequenceBuilder.java:130) > | Error at org.drools.compiler.rule.builder.RuleBuilder.build(RuleBuilder.java:103) > | Error at org.drools.compiler.compiler.PackageBuilder.addRule(PackageBuilder.java:3160) > | Error at org.drools.compiler.compiler.PackageBuilder.compileRules(PackageBuilder.java:1047) > | Error at org.drools.compiler.compiler.PackageBuilder.compileAllRules(PackageBuilder.java:952) > | Error at org.drools.compiler.compiler.CompositeKnowledgeBuilderImpl.buildRules(CompositeKnowledgeBuilderImpl.java:231) > | Error at org.drools.compiler.compiler.CompositeKnowledgeBuilderImpl.buildPackages(CompositeKnowledgeBuilderImpl.java:86) > | Error at org.drools.compiler.compiler.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:75) > | Error at org.drools.compiler.kie.builder.impl.AbstractKieModule.buildKnowledgePackages(AbstractKieModule.java:201) > | Error at org.drools.compiler.kie.builder.impl.AbstractKieProject.verify(AbstractKieProject.java:39) > | Error at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildKieProject(KieBuilderImpl.java:305) > | Error at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildAll(KieBuilderImpl.java:187) > | Error at com.iterranux.droolsjbpmCore.runtime.build.impl.KieModuleBuilder.buildKmoduleForGrailsModule(KieModuleBuilder.java:127) > | Error at com.iterranux.droolsjbpmCore.runtime.build.impl.KieModuleBuilder.buildKmoduleForGrailsModule(KieModuleBuilder.java:148) > | Error at com.iterranux.droolsjbpmCore.runtime.build.impl.KieModuleBuilder$buildKmoduleForGrailsModule.call(Unknown Source) > | Error at DroolsjbpmCoreGrailsPlugin$_closure7.doCall(DroolsjbpmCoreGrailsPlugin.groovy:386) > | Error at sun.reflect.GeneratedMethodAccessor992.invoke(Unknown Source) > | Error at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > | Error at java.lang.reflect.Method.invoke(Method.java:601) > | Error at org.springsource.loaded.ri.OriginalClassInvoker.invoke(OriginalClassInvoker.java:47) > | Error at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1283) > | Error at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90) > | Error at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233) > | Error at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1085) > | Error at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:1110) > | Error at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:909) > | Error at groovy.lang.Closure.call(Closure.java:411) > | Error at DroolsjbpmCoreGrailsPlugin$_closure7.call(DroolsjbpmCoreGrailsPlugin.groovy) > | Error at org.codehaus.groovy.grails.plugins.DefaultGrailsPlugin.invokeOnChangeListener(DefaultGrailsPlugin.java:767) > | Error at org.codehaus.groovy.grails.plugins.DefaultGrailsPlugin.notifyOfEvent(DefaultGrailsPlugin.java:716) > | Error at org.codehaus.groovy.grails.plugins.DefaultGrailsPlugin.notifyOfEvent(DefaultGrailsPlugin.java:731) > | Error at org.codehaus.groovy.grails.plugins.AbstractGrailsPluginManager.informOfClassChange(AbstractGrailsPluginManager.java:406) > | Error at org.codehaus.groovy.grails.plugins.AbstractGrailsPluginManager.informOfFileChange(AbstractGrailsPluginManager.java:367) > | Error at org.codehaus.groovy.grails.compiler.GrailsProjectWatcher.informPluginManager(GrailsProjectWatcher.java:243) > | Error at org.codehaus.groovy.grails.compiler.GrailsProjectWatcher.access$400(GrailsProjectWatcher.java:46) > | Error at org.codehaus.groovy.grails.compiler.GrailsProjectWatcher$1.onChange(GrailsProjectWatcher.java:154) > | Error at org.codehaus.groovy.grails.compiler.DirectoryWatcher.fireOnChange(DirectoryWatcher.java:174) > | Error at org.codehaus.groovy.grails.compiler.DirectoryWatcher.run(DirectoryWatcher.java:156) > | Error at org.codehaus.groovy.grails.compiler.GrailsProjectWatcher.run(GrailsProjectWatcher.java:178) > | Error at java_lang_Runnable$run.call(Unknown Source) > | Error at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45) > | Error at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108) > | Error at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:112) > | Error at org.codehaus.groovy.grails.cli.fork.ForkedGrailsProcess.startProjectWatcher(ForkedGrailsProcess.groovy:702) > | Error at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > | Error at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) > | Error at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > | Error at java.lang.reflect.Method.invoke(Method.java:601) > | Error at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1254) > | Error at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90) > | Error at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233) > | Error at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1085) > | Error at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:909) > | Error at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1030) > | Error at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:1110) > | Error at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:909) > | Error at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66) > | Error at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:49) > | Error at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:133) > | Error at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:145) > | Error at org.codehaus.groovy.grails.cli.fork.ForkedGrailsProcess$_setupReloading_closure16.doCall(ForkedGrailsProcess.groovy:691) > | Error at org.codehaus.groovy.grails.cli.fork.ForkedGrailsProcess$_setupReloading_closure16.doCall(ForkedGrailsProcess.groovy) > | Error at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > | Error at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) > | Error at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > | Error at java.lang.reflect.Method.invoke(Method.java:601) > | Error at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1254) > | Error at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90) > | Error at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233) > | Error at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1085) > | Error at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:1110) > | Error at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:909) > | Error at groovy.lang.Closure.call(Closure.java:411) > | Error at groovy.lang.Closure.call(Closure.java:405) > | Error at groovy.lang.Closure.run(Closure.java:492) > | Error at java.lang.Thread.run(Thread.java:722) > | Error Caused by: org.springsource.loaded.ReloadException: Problem defining class com.iterranux.droolsjbpmHumanTask.domain.team__I > | Error at org.springsource.loaded.TypeRegistry.defineClass(TypeRegistry.java:1076) > | Error at org.springsource.loaded.ReloadableType.rewriteCallSitesAndDefine(ReloadableType.java:807) > | Error at org.springsource.loaded.ReloadableType.<init>(ReloadableType.java:151) > | Error at org.springsource.loaded.TypeRegistry.addType(TypeRegistry.java:889) > | Error at org.springsource.loaded.agent.SpringLoadedPreProcessor.preProcess(SpringLoadedPreProcessor.java:246) > | Error at org.springsource.loaded.agent.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:102) > | Error ... 114 more > | Error Caused by: java.lang.reflect.InvocationTargetException > | Error at sun.reflect.GeneratedMethodAccessor62.invoke(Unknown Source) > | Error at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > | Error at java.lang.reflect.Method.invoke(Method.java:601) > | Error at org.springsource.loaded.TypeRegistry.defineClass(TypeRegistry.java:1071) > | Error ... 119 more > | Error Caused by: java.lang.NoClassDefFoundError: com/iterranux/droolsjbpmHumanTask/domain/team__I (wrong name: com/iterranux/droolsjbpmHumanTask/domain/Team__I) > | Error at java.lang.ClassLoader.defineClass1(Native Method) > | Error at java.lang.ClassLoader.defineClass(ClassLoader.java:791) > | Error at java.lang.ClassLoader.defineClass(ClassLoader.java:634) > | Error ... 123 more > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users