Getting activity performer

[DS-22]

Hello,

Is it possible to get a performer for a given activity? Namely, I have created
a custom assignment manager that associates activity with a user group from our
DB. In order to be flexible, each participant is augmented with an extended
attribute with the name of the user group. So the assignment manager reads that
attribute and add it to the assignment output list. The second thing that may
happen is the reassignment. I'd like to be sure that that if an activity is
reassigned, the user belongs to the group associated with the performer. And I
am not exactly sure how to get the action performer so that I could read the
extended attributes again.

Thank you.


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[Sasa Bojanic]

Hi,

not sure if I understood correctly. Anyway, to get possible
performers/assignees for the activity you can use:

WfAssignment[] assignments=WfActivity.get_sequence_assignment(0);

by calling WfAssignment.assignee() method you get WfResource object
which represents the performer (WfResource.resource_key() is the
performers' username).

If you work with WAPI, you can also get the list of the
assignemnts/workitems for the activity by calling
WAPI.listWorkItems(...) and providing proper WMFilter object which you
create through AssignmentFilterBuilder API by calling its
addActivityIdEquals() method.

If activity is accepted, you can also get the single performer of this
activity by calling AdminMisc.getActivityResourceUsername(...) method.

In the case you specify your group statically through extended attribute
(e.g. you just write a string representing this group) I don't
understand why are you using ExtendedAttribute for specifying group? Why
don't you just create a participant with an Id the same as the value of
your ext. attrib and put your activity inside this participant in JaWE
(in XPDL specifying the activity's Performer field equal to this
participant Id)? In this case, PerformerData structure which you get as
a parameter in AssignmentManager's getAssignments() method has a field
"participantIdOrExpression" equal to this Participant Id from XPDL.

Also don't understand why do you put a group to the output list of an
assignment manager? In this case activity will be assigned to the
resource/user which has a username equal to this group.

Regards,
Sasa.

DS wrote:

> Hello,
>
> Is it possible to get a performer for a given activity? Namely, I have created
> a custom assignment manager that associates activity with a user group from our
> DB. In order to be flexible, each participant is augmented with an extended
> attribute with the name of the user group. So the assignment manager reads that
> attribute and add it to the assignment output list. The second thing that may
> happen is the reassignment. I'd like to be sure that that if an activity is
> reassigned, the user belongs to the group associated with the performer. And I
> am not exactly sure how to get the action performer so that I could read the
> extended attributes again.
>
> Thank you.
>  

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[DS-22]

Sasa,

Sorry, I was probably not clear enough. I know how to get assignments for an
activity (via a method call or using iterator). That's not what I need. I need
to know the assigned performer, e.g. ROLE, for a given activity.

You are actually completely right - I don't need the extended attribute, I just
need to name my performers by name of the local user group. That's a great
observation.

Thank you.


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[Sasa Bojanic]

So you mean the Activity's performer from XPDL by the usage of Shark's
client API (in the assignment manager it is clear - you can get it from
PerformerData structure as I explained)?

There was a post on the mailing list how to find performer from XPDL:

The participant reference is normally specified through XPDL Activity's
Performer element.
To get performer information having activity instance in the runtime,
you can do the following:

     WMEntity ent =
Shark.getInstance().getAdminMisc().getActivityDefinitionInfo(shandle,
procId, actId);
     WMFilter filter = new WMFilter("Name", WMFilter.EQ, "Performer");
     filter.setFilterType(XPDLBrowser.SIMPLE_TYPE_XPDL);
     WMAttribute[] attrs = xpdlb.listAttributes(shandle, ent, filter,
true).getArray();
     String perf=null;
     if (attrs != null && attrs.length > 0) {
        perf = attrs[0].getValue().toString();
     }
     return perf;

Regards,
Sasa.


DS wrote:

> Sasa,
>
> Sorry, I was probably not clear enough. I know how to get assignments for an
> activity (via a method call or using iterator). That's not what I need. I need
> to know the assigned performer, e.g. ROLE, for a given activity.
>
> You are actually completely right - I don't need the extended attribute, I just
> need to name my performers by name of the local user group. That's a great
> observation.
>
> Thank you.
>  

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[DS-22]

That appears to be exactly what I need. Thanks! (not sure though what xpdlb
actually is) And I seem to have made a search for "performer" term and got
nothing.


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[Sasa Bojanic]

sorry...xpdlb is XPDLBrowser interface instance. Using XPDL browser you
can get any detail of each XPDL loaded into Shark.

DS wrote:
> That appears to be exactly what I need. Thanks! (not sure though what xpdlb
> actually is) And I seem to have made a search for "performer" term and got
> nothing.
>  

 



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[DS-22]

Never mind - it is Shark.getInstance().getXPDLBrowser(). Thanks!


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