@Override
public void startImportAllProblemsFromCourse(Course source, Course dest)
throws CloudCoderAuthenticationException {
User authenticatedUser =
ServletUtil.checkClientIsAuthenticated(
getThreadLocalRequest(), GetCoursesAndProblemsServiceImpl.class);
// Make sure that the authenticated user is registered as an instructor for
// both the source and destination courses.
boolean sourceInstructor = false, destInstructor = false;
List<? extends Object[]> courses = Database.getInstance().getCoursesForUser(authenticatedUser);
for (Object[] triple : courses) {
CourseRegistration reg = (CourseRegistration) triple[2];
if (reg.getCourseId() == source.getId() && reg.getRegistrationType().isInstructor()) {
sourceInstructor = true;
}
if (reg.getCourseId() == dest.getId() && reg.getRegistrationType().isInstructor()) {
destInstructor = true;
}
}
// Create a FutureImportCourseResult
FutureImportCourseResult result = new FutureImportCourseResult();
getThreadLocalRequest()
.getSession()
.setAttribute(SessionAttributeKeys.FUTURE_IMPORT_COURSE_RESULT_KEY, result);
if (!sourceInstructor || !destInstructor) {
result.set(new OperationResult(false, "Permission denied (not an instructor)"));
return;
}
// Start the actual operation
result.start(source, dest, authenticatedUser);
}
@Override
public OperationResult checkImportAllProblemsFromCourse() {
FutureImportCourseResult result =
(FutureImportCourseResult)
getThreadLocalRequest()
.getSession()
.getAttribute(SessionAttributeKeys.FUTURE_IMPORT_COURSE_RESULT_KEY);
if (result == null) {
return new OperationResult(
false, "There doesn't seem to be a pending operation to import exercises?");
}
OperationResult poll = result.poll();
if (poll != null) {
getThreadLocalRequest()
.getSession()
.removeAttribute(SessionAttributeKeys.FUTURE_IMPORT_COURSE_RESULT_KEY);
}
return poll;
}