Friday, February 13, 2009
Namespaces are a pain
Friday, February 13, 2009 
var myLoader:URLLoader = new URLLoader();I mean, come on, that's just weird. Why couldn't I set the namespace once somehow and just use regular dot notation from then on out? (Unless I can and I am missing something). I pulled the code above out of my backside and lo' and behold it worked.
myLoader.addEventListener( Event.COMPLETE, onLoadXML );
myLoader.load( new URLRequest( "http://www.xignite.com/xquotes.asmx/GetQuote?Symbol=AAPL" ));
function onLoadXML( e:Event ):void
{
var ns:Namespace = new Namespace("http://www.xignite.com/services/");
var myXML:XML = new XML( e.target.data );
trace( "Name " + myXML.ns::Name );
trace( "Last " + myXML.ns::Quote.ns::Last );
trace( "Price Earnings " + myXML.ns::Statistics.ns::Price_Earnings );
trace( myXML.ns::News.ns::StockNews.ns::Headline[0] );
var len:Number = myXML.ns::News.ns::StockNews.ns::Headline.length();
trace( myXML.ns::News.ns::StockNews.ns::Headline[len-1]);
}
Namespaces are something I need to properly wrap my head around, as it seems it's coming up more and more. I wasn't even quite sure that my original parsing problem was namespace related or not. In the above XML returned, do they really need to define namespaces?
Here is something better (this is all still a bit of a pain):
var myLoader:URLLoader = new URLLoader();
myLoader.addEventListener( Event.COMPLETE, onLoadXML );
myLoader.load( new URLRequest("http://www.xignite.com/xquotes.asmx/GetQuote?Symbol=AAPL" ));
myLoader.dataFormat = "XML";
function onLoadXML( e:Event ):void {
var myXML:XML = new XML(e.target.data);
if( myXML.namespace() != null)
default xml namespace = myXML.namespace();
trace("Outcome: ", myXML.Outcome);
trace("Delay: ", myXML.Delay);
}
Labels: AS3, Code, Namespaces
Comments:
There are currently 1 Comments:
-
Beasta said...“Think its best to create a file like 'org/mynamespaces/xignite.as'.
package org.mynamespace
{
public namespace xignite="http://www.xignite.com/services/"
}
import org.mynamespace.xignite;
Then in top of your parser class:
public class MyParser {
use namespace xignite;
[... code ... ]
}
Should enable you to use simple dot access.”
