[rules-users] java.lang.NoSuchMethodError on every Action node

[Ana F Santos]

Sorry!!! I forgot to mention I'm using Eclipse 3.5 (Galileo) in Windows 
XP. I even wonder if it would be better to use Ganymede instead, as it's 
known JBoss Tools in general work better with this Eclipse version, for 
JBoss Tools' stable version.


ANA FLÁVIA FONSECA DOS SANTOS
Analista de Desenvolvimento de Software

PST Eletrônica S/A
Phone: +55 19 3787 6379 
aflavia at pst.com.br
www.pst.com.br
www.positron.com.br


----- Forwarded by Ana F Santos/Pst on 14/09/2009 09:43 -----

From:
Ana F Santos/Pst
To:
rules-users at lists.jboss.org
Date:
14/09/2009 09:40
Subject:
java.lang.NoSuchMethodError on every Action node


Hi everyone.

I've been trying to use Drools for the past month, and sometimes I have 
problems I can't guess anymore how to solve.

This time, every action I try to insert in a ruleflow, I receive a 
java.lang.NoSuchMethodError. I'm even trying a really simple ruleflow with 
just one simple action - like System.out.println("Test"); - and all I get 
is a java.lang.NoSuchMethodError.

[ 
The stack trace:
java.lang.NoSuchMethodError: 
br.com.pst.packages.ruleflows.Process_br_com_pst_packages_ruleflows_0.action0(Lorg/drools/spi/KnowledgeHelper;Lorg/drools/spi/ProcessContext;)V
        at 
br.com.pst.packages.ruleflows.Process_br_com_pst_packages_ruleflows_0Action0Invoker.execute(
Process_br_com_pst_packages_ruleflows_0Action0Invoker.java:20)
        at 
org.drools.workflow.instance.node.ActionNodeInstance.internalTrigger(
ActionNodeInstance.java:54)
        at org.drools.workflow.instance.impl.NodeInstanceImpl.trigger(
NodeInstanceImpl.java:111)
        at 
org.drools.workflow.instance.impl.NodeInstanceImpl.triggerConnection(
NodeInstanceImpl.java:142)
        at 
org.drools.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(
NodeInstanceImpl.java:128)
        at 
org.drools.workflow.instance.node.StartNodeInstance.triggerCompleted(
StartNodeInstance.java:49)
        at 
org.drools.workflow.instance.node.StartNodeInstance.internalTrigger(
StartNodeInstance.java:41)
        at org.drools.workflow.instance.impl.NodeInstanceImpl.trigger(
NodeInstanceImpl.java:111)
        at 
org.drools.ruleflow.instance.RuleFlowProcessInstance.internalStart(
RuleFlowProcessInstance.java:16)
        at org.drools.process.instance.impl.ProcessInstanceImpl.start(
ProcessInstanceImpl.java:185)
        at 
org.drools.workflow.instance.impl.WorkflowProcessInstanceImpl.start(
WorkflowProcessInstanceImpl.java:230)
        at org.drools.common.AbstractWorkingMemory.startProcess(
AbstractWorkingMemory.java:1639)
        at org.drools.common.AbstractWorkingMemory.startProcess(
AbstractWorkingMemory.java:1604)
        at org.drools.impl.StatefulKnowledgeSessionImpl.startProcess(
StatefulKnowledgeSessionImpl.java:267)
        at br.com.pst.packages.ServicePackages.main(
ServicePackages.java:99)
 ]

Actually, the beginning problem was with my project, with a process and 
subprocess. The subprocess works fine, but the main process throws a 
java.lang.NoSuchMethodError always on any node I put after a specific 
RuleFlowGroup node. Everyting used to work before, but when I begin to 
enlarge it, nothing seems to work anymore. And, as I told, I can't always 
guess the exact problem as the thrown exceptions are very generic.

Hope anyone could help me!

Thanks a lot


ANA FLÁVIA FONSECA DOS SANTOS
Analista de Desenvolvimento de Software

PST Eletrônica S/A
Phone: +55 19 3787 6379 
aflavia at pst.com.br
www.pst.com.br
www.positron.com.br

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