@Override public void deleteAll() { gridFs.delete(queryForAll()); }
@Override public void deleteByFilename(String filename) { gridFs.delete(findByFilenameQuery(filename)); }
@Override public void delete(String fileId) { gridFsTemplate.delete(filenameQuery(fileId)); }
@Override public void deleteData(String dataId) { gridFs.delete(findByIdQuery(new ObjectId(dataId))); }
@Override public void delete(List<String> ids) { gridFs.delete(query(where("_id").in(ids))); }