[JBoss jBPM] - unable to execute a simple workflow
by ashishc
Hi All,
I am newbie to jBPM/JBoss and I created a simple workflow, but when i transition from the task-node to node to invoke an action class, i am getting an error
error: [Delegation], could not instantiate delegation class, "com.sample.action.MessageActionHandler".
Can anyone please provide your expert comments?
<?xml version="1.0" encoding="UTF-8"?>
|
| <process-definition xmlns="urn:jbpm.org:jpdl-3.2" name="http-demo-process">
|
| <swimlane name="initiator">
| <assignment actor-id="manager" />
| </swimlane>
| <start-state name="start-state1">
| <task swimlane="initiator" />
| <transition to="task-node1"></transition>
| </start-state>
|
| <node name="node1">
| <action class="com.sample.action.MessageActionHandler">
| <message>Sending Message</message>
| </action>
| <transition to="join1"></transition>
| </node>
|
| <task-node name="task-node1">
| <task swimlane="initiator" />
| <transition to="node1"></transition>
| </task-node>
|
| <join name="join1">
| <transition to="end-state1"></transition>
| </join>
|
| <end-state name="end-state1"></end-state>
|
| </process-definition>
and here is the message action handler class
package com.sample.action;
|
| import org.jbpm.graph.def.ActionHandler;
| import org.jbpm.graph.exe.ExecutionContext;
| import org.apache.commons.logging.Log;
| import org.apache.commons.logging.LogFactory;
|
|
| public class MessageActionHandler implements ActionHandler {
|
| Log log = LogFactory.getLog(this.getClass());
| private static final long serialVersionUID = 1L;
|
| /**
| * The message member gets its value from the configuration in the
| * process definition. The value is injected directly by the engine.
| */
| String message;
|
| /**
| * A message process variable is assigned the value of the message
| * member. The process variable is created if it doesn't exist yet.
| */
| public void execute(ExecutionContext context) throws Exception {
| log.info("Inside execute: ");
| context.getContextInstance().setVariable("message", message);
| log.info("Printing message received: " + message);
|
| }
|
| }
Please advise as this is very confusing to me
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17 years, 9 months