public Picture getAlbumPicture(Album album) {
   try {
     DefaultQueryParams<Album> queryParams = new DefaultQueryParams<Album>("getPicturesByAlbum");
     queryParams.setParam("album", album);
     queryParams.setCurrentRecord(0);
     queryParams.setRecordCount(1);
     Picture result = queryExecutor.executeNamedQuery(queryParams, Picture.class);
     return repositoryManager.retrieveContent(result, getPath(result.getAlbum()));
   } catch (Exception e) {
     return null;
   }
 }