+ // ALBUMPROVDER METHODS
+ //
+
+ @Override
+ public Optional<Album> getAlbum(String albumId) {
+ lock.readLock().lock();
+ try {
+ return fromNullable(allAlbums.get(albumId));
+ } finally {
+ lock.readLock().unlock();
+ }
+ }
+
+ @Override
+ public List<Album> getAlbums(Album parent) {
+ lock.readLock().lock();
+ try {
+ return from(albumChildren.get(parent.getId())).transformAndConcat(getAlbum()).toList();
+ } finally {
+ lock.readLock().unlock();
+ }
+ }
+
+ @Override
+ public void moveUp(Album album) {
+ lock.writeLock().lock();
+ try {
+ List<String> albums = albumChildren.get(album.getParent().getId());
+ int currentIndex = albums.indexOf(album.getId());
+ if (currentIndex == 0) {
+ return;
+ }
+ albums.remove(album.getId());
+ albums.add(currentIndex - 1, album.getId());
+ } finally {
+ lock.writeLock().unlock();
+ }
+ }
+
+ @Override
+ public void moveDown(Album album) {
+ lock.writeLock().lock();
+ try {
+ List<String> albums = albumChildren.get(album.getParent().getId());
+ int currentIndex = albums.indexOf(album.getId());
+ if (currentIndex == (albums.size() - 1)) {
+ return;
+ }
+ albums.remove(album.getId());
+ albums.add(currentIndex + 1, album.getId());
+ } finally {
+ lock.writeLock().unlock();
+ }
+ }
+
+ //
+ // ALBUMSTORE METHODS
+ //
+
+ @Override
+ public void storeAlbum(Album album) {
+ lock.writeLock().lock();
+ try {
+ allAlbums.put(album.getId(), album);
+ albumChildren.put(album.getParent().getId(), album.getId());
+ } finally {
+ lock.writeLock().unlock();
+ }
+ }
+
+ @Override
+ public void removeAlbum(Album album) {
+ lock.writeLock().lock();
+ try {
+ allAlbums.remove(album.getId());
+ albumChildren.remove(album.getParent().getId(), album.getId());
+ } finally {
+ lock.writeLock().unlock();
+ }
+ }
+
+ //
+ // IMAGEPROVIDER METHODS
+ //
+
+ @Override
+ public Optional<Image> getImage(String imageId) {
+ lock.readLock().lock();
+ try {
+ return fromNullable(allImages.get(imageId));
+ } finally {
+ lock.readLock().unlock();
+ }
+ }
+
+ @Override
+ public List<Image> getImages(Album parent) {
+ lock.readLock().lock();
+ try {
+ return from(albumImages.get(parent.getId())).transformAndConcat(getImage()).toList();
+ } finally {
+ lock.readLock().unlock();
+ }
+ }
+
+ @Override
+ public void moveUp(Image image) {
+ lock.writeLock().lock();
+ try {
+ List<String> images = albumImages.get(image.getAlbum().getId());
+ int currentIndex = images.indexOf(image.getId());
+ if (currentIndex == 0) {
+ return;
+ }
+ images.remove(image.getId());
+ images.add(currentIndex - 1, image.getId());
+ } finally {
+ lock.writeLock().unlock();
+ }
+ }
+
+ @Override
+ public void moveDown(Image image) {
+ lock.writeLock().lock();
+ try {
+ List<String> images = albumChildren.get(image.getAlbum().getId());
+ int currentIndex = images.indexOf(image.getId());
+ if (currentIndex == (images.size() - 1)) {
+ return;
+ }
+ images.remove(image.getId());
+ images.add(currentIndex + 1, image.getId());
+ } finally {
+ lock.writeLock().unlock();
+ }
+ }
+
+ //
+ // IMAGESTORE METHODS
+ //
+
+ @Override
+ public void storeImage(Image image) {
+ lock.writeLock().lock();
+ try {
+ allImages.put(image.getId(), image);
+ albumImages.put(image.getAlbum().getId(), image.getId());
+ } finally {
+ lock.writeLock().unlock();
+ }
+ }
+
+ @Override
+ public void removeImage(Image image) {
+ lock.writeLock().lock();
+ try {
+ allImages.remove(image.getId());
+ albumImages.remove(image.getAlbum().getId(), image.getId());
+ } finally {
+ lock.writeLock().unlock();
+ }
+ }
+
+ //