将XML加载到Flex AS3中

Question

I am trying to be able to load all XML data from an XML document and have been failing all night on it even with research

Here is a snippet of the XML I am trying to load:

<?xml version="1.0"?>
<feed xmlns="http://www.w3.org/2005/Atom" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <id>urn:uuid:5762c9e8-4e65-3b0c-83b3-7874683f3dbe</id>
  <link href="/v1/espi_third_party_batch_feed" rel="self">
  </link>
  <title type="text">Opower ESPI Third Party Batch Feed v1</title>
  <updated>2012-04-03T22:55:36.364Z</updated>

  <entry>
    <id>urn:uuid:baa6a50a-1306-3680-80a4-51d228db8f25</id>
    <link href="/v1/User/3560606/UsagePoint/6403112/MeterReading/1/IntervalBlock/1" rel="self">
    </link>
    <content type="xml">
      <IntervalBlock xmlns="http://naesb.org/espi">
        <interval>
          <duration>3600</duration>
          <start>1299128400</start>
        </interval>
        <IntervalReading>
          <timePeriod>
            <duration>3600</duration>
            <start>1299128400</start>
          </timePeriod>
          <value>436</value>
        </IntervalReading>
      </IntervalBlock>
    </content>
  </entry>
</feed>

Here is a snippet of the AS3 code I am puzzled on in the XmlLoader:

    public function returnArray():Array
    {           
        var ATOM:Namespace = new Namespace("http://www.w3.org/2005/Atom");
        var NAESB:Namespace = new Namespace("http://naesb.org/espi");
        trace("entered returnArray");
        var tempArray:Array = new Array();
        var x:Number = 0;
        var y:Number = 0;
        var entries = this.docXML.ATOM::entry;
        trace(entries.length());                //returns 4 and supposed to
        trace(entries[3].content.length());     //returns 0 supposed to return 1
        trace(this.docXML.ATOM::entry[3].content.NAESB::interval.length()); //returns 0`enter code here`

Answer 1

First, you should take a look at the documentation for e4x . Secondly: what are you exactly trying to do?

The last line you could change to this.docXML.ATOM::entry.content..NAESB::interval.length() but I'm not sure what you're really trying to get out of the xml document. Getting the length of a node is not very useful for getting actual data out of an xml file.

Answer 2

The answer to this thanks frankhermes and www.Flextras.com for aiding my learning is in order to continue to traverse there is the need to add another namespace of ATOM into the xml to keep traversing

var entries = this.docXML.ATOM::entry;
trace(entries[3].content.length()); 

should be

var entries = this.docXML.ATOM::entry;
trace(entries[3].ATOM::content.length());