[rules-users] intermittent error from mvel

[Edson Tirelli]

   Jeff,

   What mvel version are you using? (take a look at the jar name)
   If it is not 1.3.9, try it out to check if the problem still happens.

   []s
   Edson

2008/11/19 hongyu lu <hl_107 at yahoo.com>

> Hi,
>
> I am seeking some help here for a very weird issue we ran into with drools
> 4.0.7. The error is intermittent but once happens it will be consistent
> for the rest rule evaluation.
>
> We have a fact object called com.like.rules.facts.AllocationFact. But
> somehow the class name was messed up when passed to mvel for accessor
> optimization:com.like.rules.facts.AllocationFact.facts.AllocationFact.facts.AllocationFac
> t. Some parsing related problem? Any advice on how to debug this kind
> issues?
>
> thanks a lot for your help!
> Jeff
>
> org.drools.spi.ConsequenceException: org.mvel.CompileException: class or
> class reference not found:
>
> com.like.rules.facts.AllocationFact.facts.AllocationFact.facts.AllocationFac
> t()
>    at
>
> org.drools.base.DefaultConsequenceExceptionHandler.handleException(DefaultCo
> nsequenceExceptionHandler.java:13)
>    at
> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:558)
>    at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:518)
>    at
>
> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.j
> ava:475)
>    at
>
> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.j
> ava:439)
>    at com.like.ab.ABServiceImpl.determineAttributes(ABServiceImpl.java:125)
>    at com.like.ab.ABServiceImpl.getCustomer(ABServiceImpl.java:90)
>    at com.like.ab.ABServiceImpl.getAttributes(ABServiceImpl.java:52)
>    at
>
> com.like.ab.ABRequestContextImpl.conditionallyInit(ABRequestContextImpl.java
> :130)
>    at com.like.ab.ABRequestContextImpl.<init>(ABRequestContextImpl.java:39)
>    at com.like.ab.ABRequestContextImpl.<init>(ABRequestContextImpl.java:32)
>    at
>
> com.like.ab.ABServletRequestFilter.allocateLazyInitableRequestContext(ABServ
> letRequestFilter.java:110)
>    at
> com.like.ab.ABServletRequestFilter.doFilter(ABServletRequestFilter.java:56)
>    at
>
> com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java
> :70)
>    at
>
> com.like.web.LikeWWWRequestFilter.wrapWithLikeWWWRequestContext(LikeWWWReque
> stFilter.java:114)
>    at
> com.like.web.LikeWWWRequestFilter.doFilter(LikeWWWRequestFilter.java:74)
>    at
>
> com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java
> :70)
>    at
>
> com.like.web.ExceptionHandlerFilter.doFilter(ExceptionHandlerFilter.java:80)
>    at
>
> com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java
> :70)
>    at com.caucho.filters.XsltFilter.doFilter(XsltFilter.java:121)
>    at com.like.web.LikeXsltFilter.doFilter(LikeXsltFilter.java:22)
>    at
>
> com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java
> :70)
>    at
>
> com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:1
> 63)
>    at
>
> com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:
> 208)
>    at
> com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:259)
>    at com.caucho.server.port.TcpConnection.run(TcpConnection.java:363)
>    at com.caucho.util.ThreadPool.runTasks(ThreadPool.java:490)
>    at com.caucho.util.ThreadPool.run(ThreadPool.java:423)
>    at java.lang.Thread.run(Thread.java:595)
> Caused by: org.mvel.CompileException: class or class reference not found:
>
> com.like.rules.facts.AllocationFact.facts.AllocationFact.facts.AllocationFac
> t()
>    at
>
> org.mvel.optimizers.impl.asm.ASMAccessorOptimizer.optimizeObjectCreation(ASM
> AccessorOptimizer.java:1842)
>    at
>
> org.mvel.ast.NewObjectNode.getReducedValueAccelerated(NewObjectNode.java:191
> )
>    at org.mvel.ExecutableAccessor.getValue(ExecutableAccessor.java:45)
>    at
> org.mvel.ast.TypedVarNode.getReducedValueAccelerated(TypedVarNode.java:43)
>    at org.mvel.MVELRuntime.execute(MVELRuntime.java:90)
>    at org.mvel.CompiledExpression.getValue(CompiledExpression.java:111)
>    at org.mvel.MVEL.executeExpression(MVEL.java:235)
>    at
> org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:48)
>    at
> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:554)
>    ... 27 more
>
>
>
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>



-- 
 Edson Tirelli
 JBoss Drools Core Development
 JBoss, a division of Red Hat @ www.jboss.com
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