[jboss-user] [JBoss jBPM] - Nodetype decision: error when use handler class approach

[dadajboss]

Hi all.
Running my sample process from JBoss jBPM Console I have the error:

Error completing task: An exception of type "org.jbpm.graph.def.DelegationException" was thrown.

The sample process definition:

  | <?xml version="1.0" encoding="UTF-8"?>
  | 
  | <process-definition  xmlns="urn:jbpm.org:jpdl-3.2"  name="Process_3">
  | 
  | 	<start-state name="SN-acquire">
  | 		<task name="AcqData">
  | 			<controller>
  | 				<variable access="read,write" name="qta" mapped-name="qta"></variable>
  | 			</controller>
  | 		</task>
  | 		<transition to="TN_display1"></transition>
  | 	</start-state>
  | 
  | 
  | 	<decision name="N_decision">
  | 		<handler class="com.Process_3.decision.MyDecisionHandlerNew"></handler>
  | 		<transition to="TN_display" name="tr_true"></transition>
  | 		<transition to="N_end" name="tr_false"></transition>
  | 	</decision>
  | 
  | 	<task-node name="TN_display">
  | 		<task name="DisData"></task>
  | 		<transition to="N_end" name="to_end"></transition>
  | 	</task-node>
  | 
  | 	<task-node name="TN_display1">
  | 		<task name="display1"></task>
  | 		<transition to="N_decision"></transition>
  | 	</task-node>
  | 
  | 
  | 	<end-state name="N_end"></end-state>
  | 
  | </process-definition>

The decide-method of the DecisionHandler implementation:
package com.Process_3.decision;
  | 
  | import org.jbpm.graph.exe.ExecutionContext;
  | import org.jbpm.graph.node.DecisionHandler;
  | 
  | public class MyDecisionHandlerNew implements DecisionHandler {
  | 	 private static final long serialVersionUID = 1L;
  | 	public String decide(ExecutionContext executionContext) throws Exception {
  | 		 String quantity = (String) executionContext.getContextInstance().getVariable("qta");
  | 		 if (Integer.parseInt(quantity) > 10) {
  | 	 return "tr_true";
  | 	 }
  | 	 else {
  | 	 return "tr_false";
  | 	 } 		
  | 	}
  | }

Can somebody help me? 
Thank you so much!


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