products.xml

<products>
  <product
    product_id="227307351"
    name="Sam Edelman Women's Ximon"
    sku_number="227307351"
    manufacturer_name="Sam Edelman"
    part_number="00736701885362">
    <category>
      <primary>Apparel~~Footwear</primary>
      <secondary></secondary>
    </category>
    <URL>
      <product>http://affiliate.rakuten.com/link?id=g2*09Hrp7YA&amp;offerid=272843.227307351&amp;type=15&amp;murl=http%3A%2F%2Fshoes.store.buy.com%2Fp%2Fsam-edelman-women-s-ximon%2F227307351.html</product>
      <productImage>http://images.rakuten.com/PI/0/250/227307351.jpg</productImage>
      <buy></buy>
    </URL>
    <description>
      <short>You ll be puddle-splashing chic in the Ximon rain boots from Sam Edelman.Rubber upper in a casual knee-high rain boot style with a round toeOuter side faux buttonsLogo detail, pull loop14 inch shaft height, 15 1/2 inch circumferenceFabric lining, removable cushioned insoleRubber traction outsole1 1/4 inch heel</short>
      <long>You ll be puddle-splashing chic in the Ximon rain boots from Sam Edelman.Rubber upper in a casual knee-high rain boot style with a round toeOuter side faux buttonsLogo detail, pull loop14 inch shaft height, 15 1/2 inch circumferenceFabric lining, removable cushioned insoleRubber traction outsole1 1/4 inch heel</long>
    </description>
    <discount currency="USD">
      <amount>0.00</amount>
      <type>amount</type>
    </discount>
    <price currency="USD">
      <sale begin_date="" end_date="">84.55</sale>
      <retail>84.55</retail>
    </price>
    <brand>Sam Edelman</brand>
    <shipping>
      <cost currency="USD">
        <amount>0.00</amount>
        <currency>USD</currency>
      </cost>
      <information></information>
      <availability>yes</availability>
    </shipping>
    <keywords></keywords>
    <upc>00736701885362</upc>
    <m1></m1>
    <pixel>http://ad.linksynergy.com/fs-bin/show?id=g2*09Hrp7YA&amp;bids=272843.227307351&amp;type=15&amp;subid=0</pixel>
  </product>
</products>

reader.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'nokogiri'

class Product < Struct.new(:id, :name, :short_description, :long_description)
  def valid?
    id and name and short_description and long_description
  end
end

def parse_products(file_name)
  file = open(file_name)
  products = []
  doc = Nokogiri::XML(open('/Users/joseph/products.xml'))
  doc.xpath('//product').each do |product_elem|
    id = product_elem['product_id']
    name = product_elem['name']
    short_description = product_elem.xpath('description/short').text
    long_description = product_elem.xpath('description/long').text
    product = Product.new(id, name, short_description, long_description)
    products << product if product.valid?
  end
  file.close
  return products
end

products = parse_products('/Users/joseph/products.xml')
puts products