[jboss-jira] [JBoss JIRA] Commented: (JBRULES-2358) ClassNotFoundException when using "mvel" as a dialect

[stephane Brossier (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBRULES-2358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12497324#action_12497324 ] 

stephane Brossier commented on JBRULES-2358:
--------------------------------------------

I found a couple of tickets that were also referring ClassNotFound issue but i am not sure that are the same since the stack trace is not identical:

https://jira.jboss.org/jira/browse/JBRULES-1596
https://jira.jboss.org/jira/browse/JBRULES-2253

Please let me know if there is a fix that does not involves switching from dialect "mvel" to "java"

> ClassNotFoundException when using "mvel" as a dialect
> -----------------------------------------------------
>
>                 Key: JBRULES-2358
>                 URL: https://jira.jboss.org/jira/browse/JBRULES-2358
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 5.0.1.FINAL
>         Environment: OS: Macos X and Linux
> JVM 1.6.0_15 from sun
>            Reporter: stephane Brossier
>            Assignee: Mark Proctor
>         Attachments: Test.java
>
>
> I get a ClassNotFoundexception when using a very simple rule and test. The test dowloads a binary package from guvnor, containing one trivial rule. Then it creates a StatefulKnowledgeSession and insert 500 facts. The drl file uploaded on guvnor is:
> --------------------------
> package mytest.debug.rules
> declare PerUserCount
> 	num : long
> 	profile : String
> end
> rule "Event"
>         dialect "java"
> 	when
> 	    e: PerUserCount()
> 	then
>             System.out.println("Possible spammer [p=" + e.getProfile() + "] : count = " + e.getNum());
> end
> ----------------------------
> When calling fireAll, i get an exception. Note that:
> 1) The exception does not show up right away-- it only comes after some of those facts got processed
> 2) If i change the dialect from default 'mvel" to "java" it works fine:
> Exception in thread "main" java.lang.NoClassDefFoundError: mytest/debug/rules/PerUserCount
> 	at ASMAccessorImpl_7377369041259611028980.getValue(Unknown Source)
> 	at org.mvel2.optimizers.dynamic.DynamicGetAccessor.getValue(DynamicGetAccessor.java:66)
> 	at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:99)
> 	at org.mvel2.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:102)
> 	at org.mvel2.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:102)
> 	at org.mvel2.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:102)
> 	at org.mvel2.compiler.ExecutableAccessor.getValue(ExecutableAccessor.java:41)
> 	at ASMAccessorImpl_7157329411259611028970.getValue(Unknown Source)
> 	at org.mvel2.optimizers.dynamic.DynamicGetAccessor.getValue(DynamicGetAccessor.java:66)
> 	at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:99)
> 	at org.mvel2.MVELRuntime.execute(MVELRuntime.java:85)
> 	at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:107)
> 	at org.mvel2.MVEL.executeExpression(MVEL.java:978)
> 	at org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:87)
> 	at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:934)
> 	at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:885)
> 	at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1086)
> 	at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:660)
> 	at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:627)
> 	at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:183)
> 	at com.drools.debug.Test.runIteration(Test.java:132)
> 	at com.drools.debug.Test.startTest(Test.java:73)
> 	at com.drools.debug.Test.main(Test.java:196)
> Caused by: java.lang.ClassNotFoundException: mytest.debug.rules.PerUserCount
> 	at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
> 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:330)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:254)
> 	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:402)
> 	... 23 more

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira