Working with XML Namespaces in Flash

Today I was having some issues with parsing RSS/ATOM feeds in Flash. I forgot to factor in the fact that both use namespaces in the XML. Here's a simple block of code I used to handle the namespaces and parse the XML into Value Objects:

public function xmlLoaded(event:Event):void

{

trace("done loading");

theXML = XML(myLoader.data);

var ns:Namespace = theXML.namespace();


for each (var property:XML in theXML..item)

{

var atom:Namespace = property.namespace("atom");


var fVO:FeatureVO = new FeatureVO();

fVO.pubDate = property.pubDate;

fVO.updated = property.atom::updated;

fVO.category = property.category;

fVO.title = property.title;

fVO.summary = property.atom::summary;

fVO.link = property.link;

fVO.enclosure = property.enclosure.@url;

fVO.xmlData = property;

model.featuresArray.push(fVO);


trace("creating featureVO "+fVO.enclosure);

}

This is what the sample xml looked like from Blogger's RSS/ATOM feed:

<rss xmlns:atom='http://www.w3.org/2005/Atom' xmlns:openSearch='http://a9.com/-/spec/opensearch/1.1/' version='2.0'>

<channel>

<atom:id>tag:blogger.com,1999:blog-</atom:id>

<lastBuildDate>Wed, 10 Sep 2008 19:07:53 +0000</lastBuildDate>

<title></title>

<description></description>

<link>asdfasdf.com/</link>

<managingEditor>noreply@blogger.com (Erik Loehfelm)</managingEditor>

<generator>Blogger</generator>

<openSearch:totalResults>9</openSearch:totalResults>

<openSearch:startIndex>1</openSearch:startIndex>

<openSearch:itemsPerPage>25</openSearch:itemsPerPage>

<item>

<guid isPermaLink='false'>tag:blogger.com,1999:blog-</guid>

<pubDate>Wed, 10 Sep 2008 19:07:00 +0000</pubDate>

<atom:updated>2008-09-10T15:07:53.696-04:00</atom:updated>

<category domain='http://www.blogger.com/atom/ns#'>feature</category>

<title>People Singing</title>

<atom:summary>This is going to be a feature for the portal.v/atom:summary>

<link>asdfasdfasdf.html</link>

<enclosure type='image/jpeg' url='http://msnbcmedia.msn.com/j/msnbc/Components/Slideshows/_production/ss-080522-idolfinale/ss-080522-idolfinale-09.hmedium.jpg' length='0'/>

<author>noreply@blogger.com (Erik Loehfelm)</author>

</item>

</channel>

</rss>

You can see the syntax to be used on the 2 lines highlighted in bold above. The first defines the namespace (atom) and the second shows how you access elements in the xml that have the atom namespace applied to them.