@Override public OperationResult run(Connection conn) throws SQLException { // First, find the user User user = Queries.getUser(conn, spec.getUsername(), this); if (user == null) { return new OperationResult(false, "Unknown user " + spec.getUsername()); } // Create the CourseRegistration CourseRegistration reg = new CourseRegistration(); reg.setUserId(user.getId()); reg.setCourseId(spec.getCourseId()); reg.setRegistrationType(spec.getRegistrationType()); reg.setSection(spec.getSection()); // Insert the CourseRegistration DBUtil.storeModelObject(conn, reg); Course course = null; try { course = DBUtil.loadModelObjectForId(conn, Course.SCHEMA, spec.getCourseId()); } catch (NoSuchUniqueIdException e) { logger.error("Could not find course for id={}", spec.getCourseId()); } return new OperationResult( true, "Added user " + spec.getUsername() + " to course" + (course != null ? " " + course.getNameAndTitle() : "")); }