unable to execute a simple workflow
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
