+ /** Comparator that sorts Sones by last activity (least recent active first). */
+ public static final Comparator<Sone> LAST_ACTIVITY_COMPARATOR = new Comparator<Sone>() {
+
+ @Override
+ public int compare(Sone firstSone, Sone secondSone) {
+ return (int) Math.min(Integer.MAX_VALUE, Math.max(Integer.MIN_VALUE, secondSone.getTime() - firstSone.getTime()));
+ }
+ };
+
+ /** Comparator that sorts Sones by numbers of posts (descending). */
+ public static final Comparator<Sone> POST_COUNT_COMPARATOR = new Comparator<Sone>() {
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public int compare(Sone leftSone, Sone rightSone) {
+ return (leftSone.getPosts().size() != rightSone.getPosts().size()) ? (rightSone.getPosts().size() - leftSone.getPosts().size()) : (rightSone.getReplies().size() - leftSone.getReplies().size());
+ }
+ };
+
+ /** Comparator that sorts Sones by number of images (descending). */
+ public static final Comparator<Sone> IMAGE_COUNT_COMPARATOR = new Comparator<Sone>() {
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public int compare(Sone leftSone, Sone rightSone) {
+ int rightSoneImageCount = from(asList(rightSone.getRootAlbum())).transformAndConcat(FLATTENER).transformAndConcat(IMAGES).size();
+ int leftSoneImageCount = from(asList(leftSone.getRootAlbum())).transformAndConcat(FLATTENER).transformAndConcat(IMAGES).size();
+ /* sort descending. */
+ return Ints.compare(rightSoneImageCount, leftSoneImageCount);
+ }
+ };
+