parsing dspace with nokogiri

nokogiri_parse.rb

# xpath to type for xoai
# puts doc.xpath("//record/metadata/metadata/element/*[@name='type']/element/field")[0].content 
doc = File.open("TARGET.XML") { |f| Nokogiri::XML(f) }
doc.remove_namespaces!
single_text = Array.new
publisher_text = Array.new
relation_text = Array.new
doc.xpath("//record").each do |record_element|
  if (record_element.xpath('metadata/dc/type').count == 1 && record_element.xpath('metadata/dc/type').text == 'Text')
    single_text << record_element.xpath('metadata/dc/type').text
    if ! record_element.xpath('metadata/dc/publisher').empty?
      publisher_text << record_element.xpath('metadata/dc/publisher').text
    end
    if ! record_element.xpath('metadata/dc/relation').empty?
      relation_text << record_element.xpath('metadata/dc/relation').text
    end
  end
end ; nil
puts single_text.count
puts publisher_text.count
puts relation_text.count