How to list human tasks with HQ API?

[awulms_work]

Hi,

I have created a human task using the "human task view" plugin in eclipse. The task is made for the user "krisv". It shows-up both in the "human task view" in eclipse and in the jbpm console when I login with krisv user (based on the demo/evaluation set-up of jBPM 5.3). The task is in status reserved.

I have now made a small java program that connects to the human task service on localhost on port 5445. The program is supposed to get all reserved tasks for krisv user but it returns 0 results.

Here is the code that I use:

public static void main(String args[])

{

  String user="krisv";

  String language="en-UK";

  List<Status> status = Arrays.asList(new Status[] { Status.Reserved });

  System.out.println("*** Connecting to human task client with HornetQ protocol");

  SyncTaskServiceWrapper tk = new SyncTaskServiceWrapper(new AsyncHornetQTaskClient());

  tk.connect("127.0.0.1", 5445);

  System.out.println("*** Getting " + status + " tasks for " + user + " with language " + language);

  List<TaskSummary> tasks = tk.getTasksAssignedAsPotentialOwnerByStatus(user, status, language);

  tasks.addAll(tk.getTasksOwned(user, status, language));

  System.out.println("*** Got " + tasks.size() + " tasks");

}

It shows at the end "got 0 tasks"

Any idea what I'm doing wrong?

Any help is appreciated.

Thanks and kind regards,

Alex

PS: Can you kindly add jBPM 5.3 to the list of "Categories" in this forum?

[awulms_work]

Hi,

I have found a solution. Apparently I must specify a human task client (session) id to the constructor of the AsyncHronetQTaskClient class. It works fine with following code:

public static void main(String args[])
{
  String user="krisv";
  String language="en-UK";
  List<Status> status = Arrays.asList(new Status[] { Status.Reserved });
 
  String clientSessionID = UUID.randomUUID().toString();
  System.out.println("*** Connecting to human task service with HornetQ protocol, using client session ID: " + clientSessionID);
  SyncTaskServiceWrapper tk = new SyncTaskServiceWrapper(new AsyncHornetQTaskClient(clientSessionID));
  tk.connect("127.0.0.1", 5445);
 
  System.out.println("*** Getting " + status + " tasks for " + user + " with language " + language);
  List<TaskSummary> tasks = tk.getTasksAssignedAsPotentialOwnerByStatus(user, status, language);
 
  System.out.println("*** Got " + tasks.size() + " tasks");
 
  System.out.println("*** Closing connection");
  try {
   tk.disconnect();
  } catch (Exception e) {
   System.out.println("*** Error during disconnect: " + e.getMessage());
  }
  System.exit(0);
}

Thanks and kind regards,

Alex

PS: I found the solution thanks to the jbpm-examples module, in which the human task example also specifies a (hard-coded) client-session-id to the constructor.