Method SetDecoder

cpp/src/parquet/decoder.cc:1463–1467

Set BitReader which is already initialized by DeltaLengthByteArrayDecoder or DeltaByteArrayDecoder

  // Set BitReader which is already initialized by DeltaLengthByteArrayDecoder or
  // DeltaByteArrayDecoder
  void SetDecoder(int num_values, std::shared_ptr<::arrow::bit_util::BitReader> decoder) {
    this->num_values_ = num_values;
    decoder_ = std::move(decoder);
    InitHeader();
  }

  int ValidValuesCount() {
    // total_values_remaining_ in header ignores of null values