Product: JBoss DRools
Version: 4.0.3
JDK: 1.5.0_12
OS: Windows XP SP2
AS: JBoss 4.2.2GA

Hi,

Sorry haven't been on the list for a while, busy with a project, which keeps me now really busy.
We have here an exception which does not seem to make any sense and we're a bit lost in the why and where this happens.

Any help will be appreciated.
Thanks,
Darko IVANCAN
----------------------------------
Steps to reproduce:

1. Log in to jBRMS
2. Created Package as “com.xyz.abcservice.rules”
3. Imported two jars (“rulescore.jar”,” sampleDomain.jar”) into Model.
4. Created New Rule with the following content

	package com.xyz.abcservice.rules;

	import domain.Accommodation1;
	import java.util.List;
	import com.xyz.common.rules.api.GenericRuleViolation;

	global java.util.List errList;

	rule "Conflict Rule 1"               
	   when
		accommodation1:Accommodation1(name == "Car")
		accommodation2:Accommodation1(name == "Caravan")
	   then
		errList.add(new 
		GenericRuleViolation(accommodation1,"Invalid cabin combination."));
	end

4. Validate it…

------------Output------------------
An error occurred executing the action.

Details

<!-- AppServer Exceptions moved below this exception for readability--!>

Caused by: java.lang.ClassFormatError: Incompatible magic value 1885430635 in class file domain/Accommodation1
 at java.lang.ClassLoader.defineClass1(Native Method)
 at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
 at org.drools.rule.MapBackedClassLoader.fastFindClass(MapBackedClassLoader.java:60)
 at org.drools.rule.MapBackedClassLoader.loadClass(MapBackedClassLoader.java:79)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
 at org.drools.rule.PackageCompilationData$PackageClassLoader.loadClass(PackageCompilationData.java:358)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
 at org.drools.base.ClassTypeResolver.resolveType(ClassTypeResolver.java:146)
 at org.drools.rule.builder.dialect.mvel.MVELDialect.addImport(MVELDialect.java:254)
 at org.drools.compiler.DialectRegistry.addImport(DialectRegistry.java:98)
 at org.drools.compiler.PackageBuilder.mergePackage(PackageBuilder.java:377)
 at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:264)
 at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:167)
 at org.drools.brms.server.contenthandler.DecisionTableXLSHandler.compile(DecisionTableXLSHandler.java:63)
 at org.drools.brms.server.builder.ContentPackageAssembler.buildAsset(ContentPackageAssembler.java:139)
 at org.drools.brms.server.builder.ContentPackageAssembler.<init>(ContentPackageAssembler.java:103)
 at org.drools.brms.server.ServiceImplementation.buildAsset(ServiceImplementation.java:867)
 ... 51 more

<!-- AppServer Exceptions: --!>

java.lang.reflect.InvocationTargetException
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.seam.util.Reflections.invoke(Reflections.java:21)
 at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
 at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:31)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
 at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:46)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
 at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:42)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
 at org.jboss.seam.security.SecurityInterceptor.aroundInvoke(SecurityInterceptor.java:40)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
 at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:106)
 at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:155)
 at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:91)
 at org.drools.brms.server.ServiceImplementation_$$_javassist_3.buildAsset(ServiceImplementation_$$_javassist_3.java)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.seam.remoting.gwt.GWTToSeamAdapter.callWebRemoteMethod(GWTToSeamAdapter.java:74)
 at org.jboss.seam.remoting.gwt.GWTRemoteServiceServlet.processCall(GWTRemoteServiceServlet.java:290)
 at org.jboss.seam.remoting.gwt.GWTRemoteServiceServlet.doPost(GWTRemoteServiceServlet.java:172)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.jboss.seam.web.ContextFilter$1.process(ContextFilter.java:42)
 at org.jboss.seam.servlet.ContextualHttpServletRequest.run(ContextualHttpServletRequest.java:46)
 at org.jboss.seam.web.ContextFilter.doFilter(ContextFilter.java:37)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
 at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
 at java.lang.Thread.run(Thread.java:595)