if (photo.getAlbum().getCover() != null
&& photo.getAlbum().getCover().getId() == photo.getId())
photo.getAlbum().setCover(null);
AlbumBean new_album = AlbumDAO.getAlbumByID(new_album_id);
if(new_album == null)
throw new ObjectNotFoundException(String.valueOf(new_album));
if(new_album.getSite().getId()!=photo.getSite().getId())
throw new IllegalAccessException(new_album.getName());
//�����ಾ����Ƭ�� ����һ��
AlbumBean parent = new_album;
int deep = 0;