+ /**
+ * Returns the list of posts of this Sone.
+ *
+ * @return All posts of this Sone
+ */
+ public List<Post> getPosts() {
+ return Collections.unmodifiableList(posts);
+ }
+
+ /**
+ * Adds a post with the given text to this Sone.
+ *
+ * @param text
+ * The text to post
+ */
+ public synchronized void addPost(String text) {
+ Post post = new Post(this, System.currentTimeMillis(), text);
+ if (posts.add(post)) {
+ modificationCounter++;
+ }
+ }
+
+ /**
+ * Removes the given post from this Sone.
+ *
+ * @param post
+ * The post to remove
+ */
+ public synchronized void removePost(Post post) {
+ if (post.getSone().equals(this) && posts.remove(post)) {
+ modificationCounter++;
+ }
+ }
+
+ /**
+ * Returns the modification counter.
+ *
+ * @return The modification counter
+ */
+ public synchronized long getModificationCounter() {
+ return modificationCounter;
+ }
+
+ /**
+ * Sets the modification counter.
+ *
+ * @param modificationCounter
+ * The new modification counter
+ */
+ public synchronized void setModificationCounter(long modificationCounter) {
+ this.modificationCounter = modificationCounter;
+ }
+