Method ReadDictionaryIndices

cpp/src/parquet/column_reader.cc:985–988

Read dictionary indices. Similar to ReadValues but decode data to dictionary indices. This function is called only by ReadBatchWithDictionary().

  // Read dictionary indices. Similar to ReadValues but decode data to dictionary indices.
  // This function is called only by ReadBatchWithDictionary().
  int64_t ReadDictionaryIndices(int64_t indices_to_read, int32_t* indices) {
    auto decoder = dynamic_cast<DictDecoder<DType>*>(this->current_decoder_);
    return decoder->DecodeIndices(static_cast<int>(indices_to_read), indices);
  }

  // Get dictionary. The dictionary should have been set by SetDict(). The dictionary is
  // owned by the internal decoder and is destroyed when the reader is destroyed. This