Function convertCompressionKind

c++/src/Reader.cc:69–75

  }

  CompressionKind convertCompressionKind(const proto::PostScript& ps) {
    if (ps.has_compression()) {
      return static_cast<CompressionKind>(ps.compression());
    } else {
      throw ParseError("Unknown compression type");
    }
  }

  std::string ColumnSelector::toDotColumnPath() {
    if (columns_.empty()) {