jbpm, AssignmentHandler and bijection

[szaccaria]

Hallo to all,
I need some help about assignmenthandler in to my proccess...

The definition is

<process-definition
 name="controllodate">

 <start-state name="start">
 <transition to="controllo"/>
 </start-state>

 <task-node name="controllo">
 <task name="innerchek" description="Controllo documento da interno azienda">
 <assignment class="AssignmentToActorOrPooledActors" config-type="bean"/>
 </task>
 <transition to="confermato" name="terminato"/>
 <transition to="controllo" name="rinuncia"/>
 <transition name="richiesta" to="fornitore"></transition>
 </task-node>


 <task-node name="fornitore">
 <task name="controlladata" description="Controllo data da fornitore">
 <assignment actor-id="#{doc.clifor}"></assignment>
 </task>
 <transition name="proposta" to="controllo"></transition>
 </task-node>

 <end-state name="confermato"/>

</process-definition>

and the class handler is

@Stateless
@Name("assignment")
public class AssignmentToActorOrPooledActors implements AssignmentHandler {

 @In
 org.jbpm.taskmgmt.exe.TaskInstance taskInstance;

 @Logger
 private Log log;

 private static final long serialVersionUID = 1L;

 public void assign(Assignable arg0, ExecutionContext arg1) throws Exception {

 if( taskInstance == null ){
 arg0.setPooledActors(new String[]{"commerciale"});
 return;
 }

 Object obj = taskInstance.getVariable("responsabile");
 if( obj != null ){
 arg0.setActorId((String)obj);
 } else {
 arg0.setPooledActors(new String[]{"commerciale"});
 }

 }

}

I hoped that the magic of bijection worked also with the AssignmentHandler? but therefore it does not seem being.
Infact I get the java.lang.NullPointerException error when i try to use the seam componet like @loger or @in...
Bjiection not wotk with bpm?

I want to assign a task to a actor or a pooled-actors to second from who it assigns the task.
Es: I'm a actor of a pooled-actors, get a task from the pooled-actors list taskinstace, than valutate the task and bypass to another person that make something with this, so the person return to me this task... but i want to be assign to me and not to entire pooled-actors list.

Thanks in advantage

[gavin.king]

Nonononono.

http://docs.jboss.com/seam/1.2.1.GA/reference/en/html/jbpm.html#d0e5226

[szaccaria]

Nonononono.

http://docs.jboss.com/seam/1.2.1.GA/reference/en/html/jbpm.html#d0e5226

Ok Gavin,
I apologise to you... I don't read that chaper... but if I want change the assign on fly how I can?

Thanks thousands

[gavin.king]

I don't understand.

It's a value expression, its totally dynamic.

[szaccaria]

I don't understand.

It's a value expression, its totally dynamic.

Shure,
but if i want in prime time to assign the task to a group, after i want assing to a singol person how can I?

ES:

I start a new process when a order coming out. This order is put to a group of persone ( task-name "controllo" ), so a actor keep this order and after have make something put this oder to another actor ( task-node = "fornitore" ). So the actor in the "fornitore" after make some decison about order he reply to the actor that send him no to all the group of person...
Sorry for my poor english!!!
Thanks

[gavin.king]

Well, depends where you are getting the TaskInstance from.

If the task instance is associated with the conversation, you can call TaskInstance.instance().setActorId().

Or, if you are using the Seam pooled task list, you can use the built-in PooledTask component.

Or if you get the TaskInstance direct from jBPM, just call TaskInstance.setActorId().

[strategy]

Hi, all!

I have got the same problem.
I have a jbpm-swimlane connected with an assignmentHandler. This assignmentHandler should identify the user by a variable inserted by injection (@IN). But this variable is always null.

Here´s the sourceCode of the Handler:

@Name("studentAssignment")
public class StudentAssignment implements AssignmentHandler {


 @In
 Person currentUser;


 public void assign(Assignable arg0, ExecutionContext arg1) throws Exception {

 if (currentUser == null) {
 arg0.setPooledActors(new String[]{"Student"});
 } else {
 arg0.setActorId(currentUser.getId().toString());
 }
 }
}

Looks like it doesn´t work this way.
What alternatives do i have to insert any variable in the class ?

Thanks,
Matthias

[pmuir]

Use assignment via EL with Seam, not AssignmentHandlers