5:02 a.m.
Sandra Renaud [https://community.jboss.org/people/joploya] created the discussion
"Human task : assign the good task to the launcher of a processInstance"
To view the discussion, visit: https://community.jboss.org/message/775721#775721
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Hello,
I have a confusion between the processInstance and the Task with Jbpm5.
My scenario is as explain bellow :
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1/ A user enters in the application and starts a new processInstance of a jbpm process.
ProcessInstance process =
ksession.startProcess("com.st.ams.flow.npl", params);
System.out.println("process =
"+process.getProcessId()+" : "+process.getProcessName()+" :
state("+process.getState()+")");
2/ A new task is created in the database in the state Ready with the name
"startNPLRequest_PM_PL", and with this code I am abble to see that my user can
claim this task and complete it :
//Now the PM_PL process his task (it is already complete
in reality)
List<String> groups = new ArrayList<String>();
groups.add(requestor.getRole());
System.out.println("Groups : ");
for(String grp : groups){
System.out.println(" - "+grp);
}
BlockingTaskSummaryResponseHandler
taskSummaryResponseHandler = new BlockingTaskSummaryResponseHandler();
amsKnowledgeSession.getClient().getTasksAssignedAsPotentialOwner(requestor.getName(),
groups, "en-UK", taskSummaryResponseHandler);
List<TaskSummary> potentialTasks =
taskSummaryResponseHandler.getResults();
for(TaskSummary task : potentialTasks){
System.out.println("PM_PL can execute task
" + task.getName() + " (" + task.getId() + " : " +
task.getDescription() + ")");
}
3/ The problem is that several users with the role PM_PL will launch this process at the
same time, so how can I assign the good task (of the good process but I know the
processId) to my user?
I have not find the link between processId and taskId. And I need the taskId to start
the task :
amsKnowledgeSession.getClient().start( taskId, requestorId,
taskSummaryResponseHandler );
In the documentation we have this explanation but I don't really understand it :
// adding a task
BlockingAddTaskResponseHandler addTaskResponseHandler = new
BlockingAddTaskResponseHandler();
Task task = ...;
client.addTask( task, null, addTaskResponseHandler );
long taskId = addTaskResponseHandler.getTaskId();
It must be a very simple question
but I will be very happy if someone can explain me this concept.
Regards,
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7:30 a.m.
New subject: [jBPM] - Re: Human task : assign the good task to the launcher of a processInstance
Sandra Renaud [https://community.jboss.org/people/joploya] created the discussion
"Re: Human task : assign the good task to the launcher of a processInstance"
To view the discussion, visit: https://community.jboss.org/message/775746#775746
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I think I find a way to retrieve the good task for my Requestor, but an upstream problem
appears :
First the way to start the good task :
//Now the PM_PL process his task (it is already complete in
reality)
List<String> groups = new ArrayList<String>();
groups.add(requestor.getRole());
System.out.println("Groups : ");
for(String grp : groups){
System.out.println(" - "+grp);
}
BlockingTaskSummaryResponseHandler
taskSummaryResponseHandler = new BlockingTaskSummaryResponseHandler();
amsKnowledgeSession.getClient()
.getTasksAssignedAsPotentialOwner(requestor.getName(),
groups, "en-UK", taskSummaryResponseHandler);
List<TaskSummary> potentialTasks =
taskSummaryResponseHandler.getResults();
TaskSummary requestorTask = null;
for(TaskSummary task : potentialTasks){
System.out.println("PM_PL can execute task
" + task.getName() + " (" + task.getId() + " : " +
task.getDescription() + ")");
if(process.getId() ==
task.getProcessInstanceId()){
System.out.println("The task
"+task.getId()+" "+task.getName()+" is the one the requestor have to
take");
requestorTask = task;;
}
}
BlockingTaskOperationResponseHandler
taskOperationResponseHandler = new BlockingTaskOperationResponseHandler();
amsKnowledgeSession.getClient().start(requestorTask.getId(),
requestor.getName(), taskOperationResponseHandler);
Thread.sleep(60000);
System.out.println("The PM_PL has well finish his task
: call to complete");
amsKnowledgeSession.getClient().complete(requestorTask.getId(),
requestor.getName(), null, taskOperationResponseHandler);
The problem now is that each task has the same processInstanceId, processSessionId and
workItemId in the database. However I start a new KnowledgeSession and a new process each
time :
KnowledgeBase kbase = readKnowledgeBase();
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
KnowledgeRuntimeLogger logger =
KnowledgeRuntimeLoggerFactory.newThreadedFileLogger(ksession,
"/log/loggerFile.log", 1000);
HornetQHTWorkItemHandler hornetQHTWorkItemHandler = new
HornetQHTWorkItemHandler(ksession);
ksession.getWorkItemManager().registerWorkItemHandler("Human Task",
hornetQHTWorkItemHandler);
// start a new process instance
Map<String, Object> params = new HashMap<String, Object>();
params.put("userId", requestor.getName());
params.put("userGroup", requestor.getRole());
params.put("flowId", getFlowEntity().getFlowId());
ProcessInstance process =
ksession.startProcess("com.st.ams.flow.npl", params);
System.out.println("process = "+process.getProcessId()+" :
"+process.getProcessName()+" : state("+process.getState()+")");
SystemEventListenerFactory.setSystemEventListener(new SystemEventListener());
If you have a little clue to help me progress...
Thanks
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Sandra Renaud