pqw

public void add(int dictId, int docId) {
    if (_bitmaps.size() == dictId) {
      // Bitmap for the dictionary id does not exist, add a new bitmap into the list
      ThreadSafeMutableRoaringBitmap bitmap = new ThreadSafeMutableRoaringBitmap(docId);
      try {
        _writeLock.lock();
        _bitmaps.add(bitmap);
      } finally {
        _writeLock.unlock();
      }
    } else {
      // Bitmap for the dictionary id already exists, check and add document id into the bitmap
      _bitmaps.get(dictId).add(docId);
    }
  }