Examples with AssignmentImpl org.jbpm.services.task.assignment.impl.AssignmentImpl used on opensource projects

Example 1 with AssignmentImpl

use of org.jbpm.services.task.assignment.impl.AssignmentImpl in project jbpm by kiegroup.

the class PotentialOwnerBusynessAssignmentStrategy method apply.

@Override
public Assignment apply(Task task, TaskContext context, String excludedUser) {
    if (task.getPeopleAssignments().getPotentialOwners().isEmpty()) {
        logger.debug("No potential owners in the task {} can't auto assign", task);
        return null;
    }
    List<OrganizationalEntity> potentialOwners = new ArrayList<>(task.getPeopleAssignments().getPotentialOwners());
    Set<String> resolvedUsers = new TreeSet<>(Collections.reverseOrder());
    List<OrganizationalEntity> excludedOwners = ((InternalPeopleAssignments) task.getPeopleAssignments()).getExcludedOwners();
    potentialOwners.stream().filter(po -> po instanceof User && !excludedOwners.contains(po)).forEach(po -> resolvedUsers.add(po.getId()));
    UserInfo userInfo = (UserInfo) ((org.jbpm.services.task.commands.TaskContext) context).get(EnvironmentName.TASK_USER_INFO);
    if (userInfo != null) {
        logger.debug("Groups going to be resolved by {}", userInfo);
        potentialOwners.stream().filter(po -> po instanceof Group && !excludedOwners.contains(po)).forEach(po -> {
            Iterator<OrganizationalEntity> usersOfGroup = userInfo.getMembersForGroup((Group) po);
            if (usersOfGroup != null) {
                while (usersOfGroup.hasNext()) {
                    OrganizationalEntity entity = usersOfGroup.next();
                    if (!excludedOwners.contains(entity)) {
                        resolvedUsers.add(entity.getId());
                    }
                }
            }
        });
    }
    logger.debug("Resolved users eligible for task {} assignments are {}", task, resolvedUsers);
    if (excludedUser != null) {
        logger.debug("Removing excluded user {} from the list of eligible users", excludedUser);
        resolvedUsers.remove(excludedUser);
    }
    TaskPersistenceContext persistenceContext = ((org.jbpm.services.task.commands.TaskContext) context).getPersistenceContext();
    Map<String, Object> params = new HashMap<>();
    params.put("owners", resolvedUsers);
    logger.debug("DB query to be used for finding assignments :: '{}'", getQuery());
    List<Assignment> assignments = persistenceContext.queryStringWithParametersInTransaction(getQuery(), params, ClassUtil.<List<Assignment>>castClass(List.class));
    if (assignments.size() < resolvedUsers.size()) {
        logger.debug("Not all eligible users found in db, adding missing bits (eligible {}, found in db {})", resolvedUsers, assignments);
        // in case not all users have already assigned tasks added them to the list so can get the tasks
        resolvedUsers.forEach(user -> {
            Assignment assignment = new AssignmentImpl(user);
            if (!assignments.contains(assignment)) {
                // always add missing users to the top of the list so they get assigned first
                assignments.add(0, assignment);
            }
        });
    }
    if (assignments.isEmpty()) {
        logger.debug("No assignments found for task {}", task);
        return null;
    }
    logger.debug("Following assignments {} were found for task {}", assignments, task);
    // select first from the top of the list as it has the least assigned tasks
    Assignment selected = assignments.get(0);
    logger.debug("Retruning first of found assignments {}", selected);
    return new Assignment(selected.getUser());
}