ruby/red-arrow/example/write-pipe.rb

#!/usr/bin/env ruby
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require "arrow"

table = Arrow::Table.new(a: [1, 2, 3],
                         b: ["a", "b", "c"])
IO.pipe do |input, output|
  pid = spawn(RbConfig.ruby, File.join(__dir__, "read-pipe.rb"), in: input)
  input.close
  output.singleton_class.__send__(:undef_method, :seek)
  Gio::RubyOutputStream.open(output) do |gio_output|
    Arrow::GIOOutputStream.open(gio_output) do |arrow_output|
      Arrow::RecordBatchStreamWriter.open(arrow_output, table.schema) do |writer|
        writer.write_table(table)
      end
    end
  end
  output.close
  Process.waitpid(pid)
end