Method init

c++/src/Writer.cc:467–500

  }

  void WriterImpl::init() {
    // Write file header
    const static size_t magicIdLength = strlen(WriterImpl::magicId);
    {
      SCOPED_STOPWATCH(options_.getWriterMetrics(), IOBlockingLatencyUs, IOCount);
      outStream_->write(WriterImpl::magicId, magicIdLength);
    }
    currentOffset_ += magicIdLength;

    // Initialize file footer
    fileFooter_.set_header_length(currentOffset_);
    fileFooter_.set_content_length(0);
    fileFooter_.set_number_of_rows(0);
    fileFooter_.set_row_index_stride(static_cast<uint32_t>(options_.getRowIndexStride()));
    fileFooter_.set_writer(writerId);
    fileFooter_.set_software_version(ORC_VERSION);

    uint32_t index = 0;
    buildFooterType(type_, fileFooter_, index);

    // Initialize post script
    postScript_.set_footer_length(0);
    postScript_.set_compression(WriterImpl::convertCompressionKind(options_.getCompression()));
    postScript_.set_compression_block_size(options_.getCompressionBlockSize());

    postScript_.add_version(options_.getFileVersion().getMajor());
    postScript_.add_version(options_.getFileVersion().getMinor());

    postScript_.set_writer_version(WriterVersion_ORC_135);
    postScript_.set_magic("ORC");

    // Initialize first stripe
    initStripe();
  }

  void WriterImpl::initStripe() {
    stripeInfo_.set_offset(currentOffset_);