assign a task instance at runtime

[trisko]

Hi there,

how can I assign a task instance to a specific user at runtime? The user is not known at the process definition, so I can't write the user (actorID) into an assigment handler. So is there a way to assign users to task istcanes dynamicly? Via assignment handlers, as pooled actors, as jbpm API calls in the source code or something else? Thanks in advance.

regards

[jeffgordon]

You can do anything in an assignment handler to look up user id's or set an assigned group to get tasks into a task list, something like this will set a Pooled Actor but not assign the task:

public class GroupAssignmentHandler implements AssignmentHandler {
 private static final long serialVersionUID = 1L;
 private static final Logger log = Logger.getLogger(GroupAssignmentHandler.class.getName());
 private String groupName;

 public void assign(Assignable assignable, ExecutionContext executionContext) {
 log.debug("Assigning to group "+groupName);
 Set group = new HashSet();
 group.add(new PooledActor(groupName));
 if (assignable instanceof TaskInstance) {
 ((TaskInstance)assignable).setPooledActors(group);
 } else if (assignable instanceof SwimlaneInstance) {
 ((SwimlaneInstance)assignable).setPooledActors(group);
 } else {
 assignable.setPooledActors(new String[] {groupName});
 }
 }

}

Then each task can be retrieved with:

List tasks = jbpmContext.getTaskMgmtSession().findPooledTaskInstances(groupName);
if (tasks!=null && tasks.size()>0) {
 // obviously you'd want to have a loop here and check to see if this task is already assigned...
 TaskInstance task = (TaskInstance)tasks.get(0);
 taskInstance.setActorId(userId);
}

You'd want to save and close your jbpmContext right after this to get your changes committed.

[trisko]

I will try that, many thanks!