private MongoRepositoryItem(MongoRepository repository, GridFSFile dbFile, State state) {

    super(dbFile.getId().toString(), state, loadAttributes(dbFile), repository);

    this.dbFile = dbFile;
    // don't call ours setMetadata(...)
    super.setMetadata(new HashMap<String, String>());
  }
 

@Override
public GridFSFile upload(GridFSFileBuilder inputFile) throws Exception {
    GridFSInputFile _inFile = inputFile.build(this);
    _inFile.save();
    return _inFile;
}
 

private static RepositoryItemAttributes loadAttributes(GridFSFile file) {

    RepositoryItemAttributes attributes = new RepositoryItemAttributes();

    attributes.setContentLength(file.getLength());
    attributes.setLastModified(file.getUploadDate().getTime());
    attributes.setMimeType(file.getContentType());

    return attributes;
  }