From: Jeff McNeil <jeff@...>
Date: 2006-02-27T04:32:40+09:00
Subject: Re: [solution] Current Temperature (#68)

This is also my first Ruby Quiz submission.

I was going to neglect this one as well, but I got to thinking how  
nicely lazy.rb might work with some web services.  Once someone  
actually came across a working SOAP service (xmethods lists quite a  
few that are iffy),
I decided to give it a go.

Thanks =)

Jeff


#!/usr/bin/env ruby

require 'lazy'
require 'soap/wsdlDriver'
require 'rexml/document'
$-w = nil

$wsdl_loc = "http://www.webservicex.net/globalweather.asmx?WSDL"
class WeatherState
   def initialize(city, country)
     stub = SOAP::WSDLDriverFactory.new($wsdl_loc).create_rpc_driver

     @keep_me = promise do
       conditions = stub.getWeather(:CityName  
=>city, :CountryName=>country)
       data = REXML::Document.new(conditions.getWeatherResult.gsub(/< 
\?.*?>\n/, ''))
       { :temp => data.elements["//Temperature"].text, loc =>  
data.elements["//Location"].text }
       end
     end

     def temp
       demand(@keep_me)[:temp]
     end

     def loc
       demand(@keep_me)[:loc]
     end
end

if ARGV.length != 2
   abort("Usage: weather.rb city country")
end

# Create Weather Object
weatherProxy = WeatherState.new(ARGV[0], ARGV[1])
puts "Location: " + weatherProxy.loc
puts "Current Temp: " + weatherProxy.temp.strip