Getting the process from an activity

Maybe this snippet from my old code will help:

private static WfAssignedActivity getActivityByName(WfProcess process, String activityName) throws WTException
 {
 LOGGER.debug("In getApprovalAssignment()");
 QuerySpec querySpec= new QuerySpec(WfAssignedActivity.class);
 SearchCondition condition1=new SearchCondition(WfAssignedActivity.class, "parentProcessRef.key", SearchCondition.EQUAL, PersistenceHelper.getObjectIdentifier(process));
 querySpec.appendWhere(condition1, 0);
 QueryResult result=PersistenceServerHelper.manager.query(querySpec);
 LOGGER.debug("Found " + result.size() + " activities related to process.");
 while (result.hasMoreElements())
 {
 WfAssignedActivity tempActivity=(WfAssignedActivity)(result.nextElement());
 LOGGER.debug("Activity Name: " + tempActivity.getName());
 if (tempActivity.getName().equals(activityName))
 return tempActivity;
 }
 return null;

 }

You can use the getParentProcess() method of a WfAssignedActivity.

https://www.ptc.com/en/support/article/CS82856

Hi @RFS 

Here is example how to control that role do not contains actual user that complete the task.

Change name of role as you need

this example use "APPROVER" as checked role.

wt.workflow.engine.WfProcess wfprocess = (((wt.workflow.work.WfAssignedActivity) self.getObject()).getParentProcess());
java.util.Enumeration roles = wfprocess.getRoles();
while (roles.hasMoreElements())
{
wt.project.Role role = (wt.project.Role) roles.nextElement();
java.util.Enumeration participants = wfprocess.getPrincipals(role);

// kontrola zobrazovaného názvu role
if (role.getDisplay().equalsIgnoreCase("APPROVER"))
{
wt.org.WTPrincipal activeUser = wt.session.SessionHelper.getPrincipal();
if (!participants.hasMoreElements())
{
String msg = "Approver MUST be assigned";
java.lang.Exception exp = new java.lang.Exception(msg);
throw exp;
}
while (participants.hasMoreElements())
{
wt.org.WTPrincipalReference principal = (wt.org.WTPrincipalReference)participants.nextElement();
wt.org.WTPrincipal assignedUser = principal.getPrincipal();
if (assignedUser.getName().equals(activeUser.getName()))
{
String msg = "Can not set yorself as Approver.";
java.lang.Exception exp = new java.lang.Exception(msg);
throw exp;
}
}
}
}

Here is an old post where is interesting discussion

Stop-user-from-adding-self-to-Setup-Participant-role

PetrH