Converting QXmlItem to QtDomElement or similar?

I'm parsing a fairly complicated XML file of the following structure:

<root>
   ... 
   ...
   <item> 
      <subitem id="1"/>
      <text>
         text1
      </text>
   </item>
   <item>
      <subitem id="2"/>
      <text>
         text2
      </text>   
   </item>
      ...
  开发者_JAVA百科 <item>
      ...
   </item>
   ...
</root>

It's pretty crude but you get my drift I hope. I'm primarily interested in "item" nodes. So I wrote the following code (directly out of the Qt's online manual):

QXmlQuery query;
query.setQuery("//item/");

QXmlResultItems result;
query.evaluateTo(&result);

QXmlItem item(result.next());
while (!item.isNull()) 
{
  if (item.isNode())
  {
      // WHAT DO I DO NOW?
  }
  item = result.next();
}

Now, QXmlItem appears to represent two concepts, a literal value (like a string) or a Node, (which is what item.isNode() is doing). Unfortunately, I can't grasp how to convert the QXmlItem to something that will query-able again. In particular from the example above I'd like to grab the "id" attribute, and the text element. Can I do this using the XQuery approach, or am I way off base here?

Any advice?

Thanks!

You can use QXmlItem to modify the focus of your query. For example:

QXmlItem item(result.next());
while (!item.isNull()) 
{
  if (item.isNode())
  {
    query.setFocus(item);
    query.setQuery("./text/string()");
    QString text;
    query.evaluateTo(&text);
  }
  item = result.next();
}

will retrieve the <text> value of the <item>.

QXmlQuery is one crummy piece of Qt documentation, but i would say that you write your query to return the items that you actually want i.e. (this is an uneducated guess)

query.setQuery("//item/subitem | //item/text");

W3Schools has a Tutorial on XPath that might help