Method ReadDictionary

cpp/src/arrow/ipc/reader.cc:1114–1130

Read dictionary from dictionary batch

  // Read dictionary from dictionary batch
  Status ReadDictionary(const Message& message) {
    DictionaryKind kind;
    IpcReadContext context(&dictionary_memo_, options_, swap_endian_);
    RETURN_NOT_OK(::arrow::ipc::ReadDictionary(message, context, &kind));
    ++stats_.num_dictionary_batches;
    switch (kind) {
      case DictionaryKind::New:
        break;
      case DictionaryKind::Delta:
        ++stats_.num_dictionary_deltas;
        break;
      case DictionaryKind::Replacement:
        ++stats_.num_replaced_dictionaries;
        break;
    }
    return Status::OK();
  }

  std::shared_ptr<Listener> listener_;
  const IpcReadOptions options_;