Class: BEL::Translator::Plugins::Bnj::BnjTranslator

Inherits:
Object
  • Object
show all
Includes:
BEL::Translator
Defined in:
lib/bel/translator/plugins/bnj/translator.rb

Instance Method Summary collapse

Instance Method Details

#read(data, options = {}) ⇒ Object 



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# File 'lib/bel/translator/plugins/bnj/translator.rb', line 12

def read(data, options = {})
  ::BEL::JSON.read(data, options).lazy.select { |obj|
    obj.include?(Bnj::NANOPUB_ROOT)
  }.map { |json_obj|
    unwrap(json_obj)
  }
end

#write(objects, writer = StringIO.new, options = {}) ⇒ Object 



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# File 'lib/bel/translator/plugins/bnj/translator.rb', line 20

def write(objects, writer = StringIO.new, options = {})
  json_strings = Enumerator.new { |yielder|
    yielder << '['
    begin
      nanopub_enum = objects.each

      # write first nanopub object
      nanopub = nanopub_enum.next
      yielder << ::BEL::JSON.write(wrap(nanopub), nil)

      # each successive nanopub starts with a comma
      while true
        nanopub = nanopub_enum.next
        yielder << ','
        yielder << ::BEL::JSON.write(wrap(nanopub), nil)
      end
    rescue StopIteration
      # end of nanopub hashes
    end
    yielder << ']'
  }

  if block_given?
    json_strings.each do |string|
      yield string
    end
  else
    if writer
      json_strings.each do |string|
        writer << string
        writer.flush
      end
      writer
    else
      json_strings
    end
  end
end