Re: Problem evaluating XPath expression into a NodeList

It seems that you are not asking for a list of summary nodes - but a 
list of text nodes made by the text of each summary node.

what happens if you use: /default:feed/default:entry/default:summary

instead of /default:feed/default:entry/default:summary/text()

/Christoffer

On 22-10-2009 13:53, Tod wrote:
> On 10/21/2009 3:34 PM, [email protected] wrote:
>>   Insufficient data. What does the input document look like and what 
>> is your XPath?
>>
>>
>> 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
>> >
>
>
>
> AtomXML - http://tools.ietf.org/html/rfc4287, with a couple of extra 
> namespace definitions thrown in.  On page two of the RFC there is an 
> example.  To demonstrate the problem I'm running into just remove the 
> string "Some text." from the example XML.
>
> You may be familiar with the XML document format as it is the format 
> returned by the IBM Omnifind Yahoo! Edition enterprise search.
>
> My XPath expression is:
>
> /default:feed/default:entry/default:summary/text()
>
> Where 'default' is the AtomXML namespace "http://www.w3.org/2005/Atom".
>
>
>
> Thanks - Tod