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(Another) Assignment Q&A

(Another) Assignment Q&A. Appreciating the context … or What are we trying to do? … building an application using external services … or a “service oriented” application. Source : Zdnet. Minimum Requirements / Deliverables (relaxed version). 3 / 4 components depending on group size

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(Another) Assignment Q&A

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  1. (Another) Assignment Q&A

  2. Appreciating the context … or What are we trying to do? … building an application using external services … or a “service oriented” application

  3. Source : Zdnet

  4. Minimum Requirements / Deliverables (relaxed version) • 3 / 4 components depending on group size • weather component • news component • a map component • one other (individual) • 1 configuration file • 2 documentation file (xml – structure & schema yet to be published) • using any or all of : php, xhtml, xml, kml, rss, css, javascript, yahoo-pipes,csv

  5. How? crunch rss feeds Source : yahoo weather rss feeds Bristol : http://weather.yahooapis.com/forecastrss?p=UKXX0025&u=f Bordeaux : http://weather.yahooapis.com/forecastrss?p=FRIF0476&u=f (or use yahoo-pipes) BRISTOL / BORDEAUX example

  6. example using php & simplexml() require_once('utility_lib.php'); $url = 'http://weather.yahooapis.com/forecastrss?p=UKXX0025&u=f'; $rss = @simplexml_load_string(get_file($url)); if($rss) { foreach($rss->channel->item as $item) { echo $item->title.'<br/>'; $ns = $item->children('http://xml.weather.yahoo.com/ns/rss/1.0'); echo (string) $ns->condition->attributes()->text.'<br/>'; echo (string) $ns->condition->attributes()->temp.'&deg;F<br/>'; echo (string) $ns->condition->attributes()->date.'<br/>'; } } else echo "Can't get Bristol Weather Yahoo RSS!"; BRISTOL / BORDEAUX example view commented code run code

  7. example using php & simplexml() Webservicex REST service: (notoriously unreliable – yahoo weather might be better) http://www.webservicex.net/ http://www.webservicex.net/globalweather.asmx/GetWeather?CityName=Bordeaux&CountryName=France http://www.webservicex.net/globalweather.asmx/GetWeather?CityName=Bristol&CountryName=United Kingdom BRISTOL / BORDEAUX example

  8. Webservicex REST service response (Bordeaux weather) : <?xml version="1.0" encoding="utf-8" ?> <string xmlns="http://www.webserviceX.NET"> <?xml version="1.0" encoding="utf-16"?> <CurrentWeather> <Location>Bordeaux / Merignac, France (LFBD) 44-50N 000-42W 61M</Location> <Time>Nov 26, 2010 - 04:00 AM EST / 2010.11.26 0900 UTC</Time> <Wind> from the SSW (210 degrees) at 2 MPH (2 KT):0</Wind> <Visibility> greater than 7 mile(s):0</Visibility> <Temperature> 35 F (2 C)</Temperature> <DewPoint> 35 F (2 C)</DewPoint> <RelativeHumidity> 100%</RelativeHumidity> <Pressure> 29.91 in. Hg (1013 hPa)</Pressure> <Status>Success</Status> </CurrentWeather></string> </CurrentWeather></string> BRISTOL / BORDEAUX example

  9. Process webservicex REST service response (Bordeaux weather) : require_once('utility_lib.php'); $url = 'http://www.webservicex.net/globalweather.asmx/GetWeather?CityName=Bordeaux&CountryName=France'; $file = get_file($url); preg_match('/(&lt;Current.*?&lt;\/CurrentWeather&gt;)/s', $file, $matches); $xml = simplexml_load_string(html_entity_decode($matches[0])); echo $xml->Location.'<br/>'; echo $xml->Time.'<br/>'; echo $xml->Wind.'<br/>'; echo $xml->Temperature.'<br/>'; BRISTOL / BORDEAUX example view commented code run code

  10. Getting and processing news feeds : Sources: Bristol (source: BBC): http://newsrss.bbc.co.uk/rss/local/bristol/front_page/rss.xml note keywords Bordeaux (source: Yahoo News Service): http://news.search.yahoo.com/rss?ei=UTF-8&p=france+bordeaux+news&fr=news-us-ss PHP script to get Bordeaux news: $url = 'http://news.search.yahoo.com/rss?ei=UTF-8&p=france+bordeaux+news&fr=news-us-ss'; $rss = @simplexml_load_string(get_file($url), 'SimpleXMLElement', LIBXML_NOCDATA); if($rss) { foreach($rss->channel->item as $item) { echo '<a href=\''.$item->link.'\'>'.$item->title.'</a><br/>'; } } else echo "Can't get Bristol Weather Yahoo RSS!"; run code view commented code BRISTOL / BORDEAUX example

  11. Google static maps: http://maps.google.com/maps/api/staticmap ?center=Bordeaux,France&zoom=15&size=800x480&sensor=false zoom size size centre of map flickr photos (from public area): http://www.flickr.com/services/feeds/photos_public.gne ?tags=bristol,cathedral,history&tagmode=all tags (comma delimited) include all tags

  12. putting it all together: i) set up a configuration file holding paths, api-keys and other data view the code for dsa_config.php ii) build a utility file holding functions and other common code view the code for dsa_utility.php iii) build a php a script to bring it all together view the code for index.php Run the example application here: http://www.cems.uwe.ac.uk/~p-chatterjee/php/dsa/index.php

  13. registering your group: • a group registration application will be made available Monday 23rd January on • you will need to register your group with this application • the application will assign your group an id • note that without registration and without a group id – your work cannot be marked!!

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