Unable to get all task from JBPM 6.4

Question

Is there a way to get all task and potential owners for each task from system? I found that there are some method on task service but it returns only a part of the tasks and without potential owners.

Answer 1

This is my solution:

@Inject
TaskService taskService;

@Inject
@PersistenceUnit(unitName = "org.jbpm.domain")
private EntityManagerFactory emf;

EntityManager em = emf.createEntityManager();
CriteriaBuilder criteriaBuilder = em.getCriteriaBuilder();

final CriteriaQuery criteriaQuery = criteriaBuilder.createQuery(TaskMinimal.class);
final Root taskRoot = criteriaQuery.from(TaskImpl.class);
final TypedQuery query = em.createQuery(criteriaQuery);
List<TaskMinimal> taskMinimals = query.getResultList();
List<Task> tasks = taskMinimals.stream()
                .map(minimal -> taskService.getTaskById(minimal.getId()))
                .collect(Collectors.toList());



public class TaskMinimal {

     private long id;

     public TaskMinimal(long id){
        this.id = id;
     }

     public long getId() {
        return id;
     }

     public void setId(long id) {
        this.id = id;
     }
}