Re: Problem evaluating XPath expression into a NodeList

Insufficient data. What does the input document look like and what is your 
XPath?

______________________________________
"... Three things see no end: A loop with exit code done wrong,
A semaphore untested, And the change that comes along. ..."
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Tod <[email protected]> wrote on 10/21/2009 02:00:02 PM:

> Tod <[email protected]> 
> 10/21/2009 02:00 PM
> 
> To
> 
> [email protected]
> 
> cc
> 
> Subject
> 
> Problem evaluating XPath expression into a NodeList
> 
> I have a class that evaluates an XPath expression against an XML stream
> with multiple namespaces and returns a NodeList.  I know by looking at
> the XML that the node I am retrieving is composed of 20 elements, called
> '<summary>'.  I also know that two of those elements have no value.  The
> relevant code looks like this:
> 
> 
>    XML2Doc xmldoc = new XML2Doc(getXmlFile());
>    Document domTree = (Document) xmldoc.getDoc();
>    domTree.getDocumentElement().normalize();
>    NamespaceResolver myResolver = new NamespaceResolver();
>    XObject xObj = XPathAPI.eval(domTree,getXpathExp(),myResolver);
>    NodeList = xObj.nodelist();
> 
> 
> 
> 
> 
> The problem I am running into is that of the 20 <summary> elements some
> are empty (<summary type="html"></summary>).  Upon evaluating the XPath
> expression the NodeList returned only 18 items event though I know there
> are twenty.  It seems that the elements that weren't valued became
> insignificant as the NodeList was generated.
> 
> Is this the correct behavior?  I'm expecting my NodeList to have the
> same number of <summary> elements because I'll be matching them against
> their related <title> elements during presentation time.  Perhaps there
> is something I need to do in my code to establish the fact that empty
> elements are significant and should be included in the NodeList?  I
> tried removing the normalize() call but that didn't help.
> 
> To make things more interesting I am developing this code using JDK
> 1.4.2 because that it is the development environment the customer is
> using and requires.
> 
> 
> Thanks - Tod
>