Notifications when the state of a user task is changed

[randysv]

Is there any way to tell jbpm to notify a listener class when ever a particular user has been assigned a task or the state of the task assigned to a user has been changed?

<?xml version="1.0" encoding="UTF-8"?>

<process-definition xmlns="urn:jbpm.org:jpdl-3.2" name="simpleTask">


 <start-state name="start">
 <transition to="task-node1"></transition>
 </start-state>


 <task-node name="task-node1">
 <task name="task1" blocking="true" signalling="false">
 <assignment actor-id="john"></assignment>
 </task>
 <transition to="end"></transition>
 </task-node>

 <end-state name="end"></end-state>


</process-definition>

In the above example, when user "john" is assigned a task, we want the jbpm engine to call one of our classes. Can we configure jbpm to do that?

[kukeltje]

by using the task-assign event? Look at how events/actions work in jBPM http://docs.jboss.com/jbpm/v3.2/userguide/html/processmodelling.html#actions