Re: [xml] Newbie Help

[Cory Virok <cory dolphtech com>]

Bryan Christ wrote:

> Please help!
>
> I have generated an xml file using kxmleditor.  With libxml, I am 
> trying to use the xpath interface to retrieve a node list for the 
> elements in my file.  The document has (currently) a three level 
> hierarchy and I am trying to retrieve data from the inner most tier.  
> My code snippet:
>
> if(!(xmldoc=xmlParseFile("statics.xml"))) break;
> xpath_context=xmlXPathNewContext(xmldoc);
> xpath_object=xmlXPathEvalExpression((xmlChar*)"root/main_ui/config_menu/*",xpath_context);
>
> When I run my code, I get the following error messages:
>
> xmlXPathNodeCollectAndTest xpath.c:1923 : nodelist and node are NULL
> xmlXPathNodeCollectAndTest xpath.c:1923 : nodelist and node are NULL
> xmlXPathNodeCollectAndTest xpath.c:1923 : nodelist and node are NULL
> xmlXPathNodeCollectAndTest xpath.c:1923 : nodelist and node are NULL
>
> Apparently, each one of these error messages corresponds to each level 
> of the hierarchy.  I have tried many permutations of the same 
> expression.  In all cases xpath_object is returned invalid.  I suspect 
> my syntax for the expression is wrong, but I cannot figure it out.
>  
> Also, I have studied the code example at 
> http://www.xmlsoft.org/tutorial/apd.html and have reviewed the syntax 
> for xpath as describe here 
> http://www.w3.org/TR/xpath#section-Introduction.  Neither has helped.  
> As far as I can tell, my code is really the same as that provided by 
> the example.  Please help!
>
> Thanks in advance,
> Bryan Christ
>
>
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have you tried 'BAD_CAST "/root/main_ui/config_menu/*"' ?