+ * @param sone
+ * The local Sone that should follow another Sone
+ * @param soneId
+ * The ID of the Sone to follow
+ */
+ public void followSone(Sone sone, String soneId) {
+ checkNotNull(sone, "sone must not be null");
+ checkNotNull(soneId, "soneId must not be null");
+ Sone followedSone = getSone(soneId, true);
+ if (followedSone == null) {
+ logger.log(Level.INFO, String.format("Ignored Sone with invalid ID: %s", soneId));
+ return;
+ }
+ followSone(sone, getSone(soneId));
+ }
+
+ /**
+ * Lets the given local Sone follow the other given Sone. If the given Sone
+ * was not followed by any local Sone before, this will mark all elements of
+ * the followed Sone as read that have been created before the current
+ * moment.
+ *
+ * @param sone
+ * The local Sone that should follow the other Sone
+ * @param followedSone
+ * The Sone that should be followed
+ */
+ public void followSone(Sone sone, Sone followedSone) {
+ checkNotNull(sone, "sone must not be null");
+ checkNotNull(followedSone, "followedSone must not be null");
+ sone.addFriend(followedSone.getId());
+ synchronized (soneFollowingTimes) {
+ if (!soneFollowingTimes.containsKey(followedSone)) {
+ long now = System.currentTimeMillis();
+ soneFollowingTimes.put(followedSone, now);
+ for (Post post : followedSone.getPosts()) {
+ if (post.getTime() < now) {
+ markPostKnown(post);
+ }
+ }
+ for (PostReply reply : followedSone.getReplies()) {
+ if (reply.getTime() < now) {
+ markReplyKnown(reply);
+ }
+ }
+ }
+ }
+ touchConfiguration();
+ }
+
+ /**
+ * Lets the given local Sone unfollow the Sone with the given ID.
+ *
+ * @param sone
+ * The local Sone that should unfollow another Sone
+ * @param soneId
+ * The ID of the Sone being unfollowed