class AWS::Record::NumericalityValidator

def validate_attribute record, attribute_name, raw
  each_value(raw) do |raw_value|
    if options[:only_integer] or options[:odd] or options[:even]
      value = as_integer(raw_value)
      error_type = :not_an_integer
    else
      value = as_number(raw_value)
      error_type = :not_a_number
    end
    unless value
      record.errors.add(attribute_name, message_for(error_type))
      return
    end
    
    COMPARISONS.each do |option,method|
      next unless options.has_key?(option)
      requirement = case options[option]
      when Symbol then record.send(options[option])
      when Proc then options[option].call(record)
      else options[option]
      end
      valid = case method
      when Symbol then value.send(method, requirement)
      else method.call(value)
      end
      unless valid
        message = message_for(option, requirement)
        record.errors.add(attribute_name, message)
      end
    end
  end
end