JSON and Datasource Part 2

ruleset a35x76 {
  meta {
    name "Datasource Tutorial Part 2"
    description <<
      Tutorial using Weather.gov Feed.
    >>
    author "Craig Burton"
    logging on
  }

  dispatch {
    domain  "craigburton.com"
  }

  global {
  
datasource WeatherSource:XML <- "http://www.weather.gov/forecasts/xml/sample_products/browser_interface/ndfdBrowserClientByDay.php?format=24+hourly&numDays=1&zipCodeList="

  }

  rule initialize is active {
    select using ".*" setting ()
    pre {
    InitializedDiv = <<
    <div id="TempForecast">
    </div>
    >>;
    }
    notify("Temperature Forecast <br>", InitializedDiv)
    with
        background_color = "#7F6449" and
        sticky=true and
        width=350 and
        opacity = 1.0 and
        color = "#000000";

  }
  rule populate is active {
    select using ".*" setting ()
      pre {
      WeatherSourceResult = datasource:WeatherSource("84121");
      maxtemp = WeatherSourceResult.pick("$..temperature[0].value.$t");
      mintemp = WeatherSourceResult.pick("$..temperature[1].value.$t");
      weathermessage = <<  
      "<div style='
          background-color:#ffc891;
          margin: 3px;
          font-size: 1em;
          padding: 2px
          color:#000000;
      '>
  The forecast is a high temperature of #{maxtemp} and a low of #{mintemp}
  </div>";
 
      >>;
      }
      {
    
    append("#TempForecast",weathermessage);
  
   }
  }
  }

Tutorial found at: http://www.craigburton.com/?p=3122