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360tv
Streaming Star
‎10-14-2014 11:52 AM

Trouble getting an XML Element

I have the following...


<imagesXML>
<channel>
   <item><media:content url="http://s3.amazonaws.com/bucket/1.jpg" medium="image"/></item>
   <item><media:content url="http://s3.amazonaws.com/bucket/2.jpg" medium="image"/></item>
   <item><media:content url="http://s3.amazonaws.com/bucket/3.jpg" medium="image"/></item>
</channel>
</imagesXML>


I need to get the url of the second url attribute.

imagesXML.channel.item.count() works but media@content or media.content@url wont. media:content@url is invalid syntax (of course). I cannot change the XML.
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3 REPLIES 3
TheEndless
Channel Surfer
‎10-14-2014 12:35 PM

Re: Trouble getting an XML Element

You'll need to user getNamedElement() to get nodes with namespaces. You may need to break it into multiple statements, but something like this should work:
xml.channel.item[0].getNamedElements("media:content")[0]@url
My Channels: http://roku.permanence.com - Twitter: @TheEndlessDev
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EnTerr
Roku Guru
‎10-14-2014 04:20 PM

Re: Trouble getting an XML Element

"TheEndless" wrote:
You'll need to user getNamedElement() to get nodes with namespaces. You may need to break it into multiple statements, but something like this should work:
xml.channel.item[0].getNamedElements("media:content")[0]@url

Actually can do it even simpler, because ifXMLList supports getNamedElements() just like ifXMLElement does (i.e. no need to zero-in on the exact element just yet)
xml.channel.item.getNamedElements("media:content")
But then will still have to add `[idx]@url` for the specific attribute as needed - because GetAttributes() does not work the same way for ifXMLList, so one cannot do 
xml.channel.item.getNamedElements("media:content").getAttributes().url   'No good
xml.channel.item.getNamedElements("media:content")@url   'No good
'but this will do
xml.channel.item.getNamedElements("media:content")[idx]@url   'OK with single row

I like to give credit to roXML when it deserves it: it has some... affordances 🙂
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360tv
Streaming Star
‎10-21-2014 09:40 AM

Re: Trouble getting an XML Element

Thanks a lot! Works perfectly.
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