Re: [XQilla-user] Problem using XPATH2 expression on XML document with default namespace.

[Vladimir L. <vlo...@op...>]

Hi John,
Here is the code:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
#include <iostream>
#include <xercesc/dom/DOM.hpp>
#include <xercesc/framework/StdOutFormatTarget.hpp>
#include <xqilla/xqilla-dom3.hpp>
XERCES_CPP_NAMESPACE_USE;
using namespace std;

int main(int argc, char *argv[])
{
   XQillaPlatformUtils::initialize();
   try
  {
    DOMImplementation* xqillaImplementation =
DOMImplementationRegistry::getDOMImplementation(X("XPath2 3.0"));
    AutoRelease<DOMLSParser>
parser(xqillaImplementation->createLSParser(DOMImplementationLS::MODE_SY
NCHRONOUS, 0));
    parser->getDomConfig()->setParameter(XMLUni::fgDOMNamespaces, true);
    parser->getDomConfig()->setParameter(XMLUni::fgXercesSchema, true);
    parser->getDomConfig()->setParameter(XMLUni::fgDOMValidateIfSchema,
true);
  	DOMDocument *document =
parser->parseURI("C:\\tempXML\\xqilla.xml");
    AutoRelease<DOMXPathNSResolver>
resolver(document->createNSResolver(document->getDocumentElement()));

      const char* expression2 = "/metadata";
      AutoRelease<DOMXPathExpression>
parsedExpression(document->createExpression(X(expression2), resolver));
      AutoRelease<DOMXPathResult>
iteratorResult(parsedExpression->evaluate(document->getDocumentElement()
, DOMXPathResult::SNAPSHOT_RESULT_TYPE, 0));
	  XMLSize_t sz = iteratorResult->getSnapshotLength();
	  assert (sz != 0);
  }
  catch(DOMException &e)
  {
    cerr << "DOMException: " << UTF8(e.getMessage()) << endl;
    return 1;
  }

  XQillaPlatformUtils::terminate();
  
  return 0;
}
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>>>
You are right that "document uses a namespace, but your XPath expression

selects elements that aren't in a namespace.".
So question is how to add a namespace to XPath expression select
elements?

Regards,
Vladimir.

-----Original Message-----
From: John Snelson [mailto:joh...@or...] 
Sent: February 15, 2010 8:48
To: xqi...@li...
Subject: Re: [XQilla-user] Problem using XPATH2 expression on XML
document with default namespace.

Hi Vladimir,

Please give an example of the code you are using. This is likely to be 
because your XML document uses a namespace, but your XPath expression 
selects elements that aren't in a namespace.

John

Vladimir Loubenski wrote:
> Hi,
> I tried to run XPATH2 expression "/metadata"
> on XML document:
> 
> <?xml version='1.0'  encoding='utf-8' ?>
> <metadata xmlns='urn:DocMan.service.livelink.opentext.com'/>
> 
> 
> I've got empty DOMXPathResult.
> If I remove default namespace from the root node it works like I
> expected - return in DOMXPathResult root node.
> I used DOM-resolver project for test.
> 
> Any suggestion?
> Thanks a lot in advance for any hint.
> Best Regards,
> Vladimir Loubenski
> 
> 
>
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-- 
John Snelson, Oracle Corporation            http://snelson.org.uk/john
Berkeley DB XML:            http://oracle.com/database/berkeley-db/xml
XQilla:                                  http://xqilla.sourceforge.net

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------
SOLARIS 10 is the OS for Data Centers - provides features such as
DTrace,
Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW
http://p.sf.net/sfu/solaris-dev2dev
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