Re: [xml] does libxml support namespace completely?

[Stefan Kost <kost imn htwk-leipzig de>]

Hi,

> hi there!
> i have a question about the namespace! now i use the libxml process a xml file
> with the
> namespace, but it can't work well.
> my xml file is:
>
>
>       
>               
>     abcd
>       
>
>
> i invoke the xmlGetPath(ptr),the ptr is the node pointer to the
>     ,and the returen is
>     /(null):root/(null):cc/(null)dd.
>     but when i invoke the xpath api to fetch the node pointer with above
>     path,it return the null.
>     who can tell me why? and if the libxml can't support the namespace completely.
It just happend to me too. You have to register a namespace and use this for the
xpath query to work. You can leave you document as it is.

  if((ctxt=xmlXPathNewContext(elements->doc))) {
    ctxt->node=xmlDocGetRootElement(doc);
    if(!xmlXPathRegisterNs(ctxt,"q","http://www.test.org/q-1.0/";)) {
      result=xmlXPathCompiledEval(xpath_expression,ctxt);
      xmlXPathRegisteredNsCleanup(ctxt);
    }
    xmlXPathFreeContext(ctxt);
  }

then use 'q' as the namespace in your query.

Stefan
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