--- /dev/null
+class Customer < ActiveRecord::Base
+ composed_of :address, :mapping => [ %w(address_street street), %w(address_city city), %w(address_country country) ], :allow_nil => true
+ composed_of :balance, :class_name => "Money", :mapping => %w(balance amount), :converter => Proc.new { |balance| balance.to_money }
+ composed_of :gps_location, :allow_nil => true
+ composed_of :fullname, :mapping => %w(name to_s), :constructor => Proc.new { |name| Fullname.parse(name) }, :converter => :parse
+end
+
+class Address
+ attr_reader :street, :city, :country
+
+ def initialize(street, city, country)
+ @street, @city, @country = street, city, country
+ end
+
+ def close_to?(other_address)
+ city == other_address.city && country == other_address.country
+ end
+
+ def ==(other)
+ other.is_a?(self.class) && other.street == street && other.city == city && other.country == country
+ end
+end
+
+class Money
+ attr_reader :amount, :currency
+
+ EXCHANGE_RATES = { "USD_TO_DKK" => 6, "DKK_TO_USD" => 0.6 }
+
+ def initialize(amount, currency = "USD")
+ @amount, @currency = amount, currency
+ end
+
+ def exchange_to(other_currency)
+ Money.new((amount * EXCHANGE_RATES["#{currency}_TO_#{other_currency}"]).floor, other_currency)
+ end
+end
+
+class GpsLocation
+ attr_reader :gps_location
+
+ def initialize(gps_location)
+ @gps_location = gps_location
+ end
+
+ def latitude
+ gps_location.split("x").first
+ end
+
+ def longitude
+ gps_location.split("x").last
+ end
+
+ def ==(other)
+ self.latitude == other.latitude && self.longitude == other.longitude
+ end
+end
+
+class Fullname
+ attr_reader :first, :last
+
+ def self.parse(str)
+ return nil unless str
+ new(*str.to_s.split)
+ end
+
+ def initialize(first, last = nil)
+ @first, @last = first, last
+ end
+
+ def to_s
+ "#{first} #{last.upcase}"
+ end
+end
\ No newline at end of file