RE: [xml] Using Xpath from a node

[Israel Ganor <ganor softlink com>]

Thanks, it works fine.

Is there a performance penalty when working with (relative) Xpath to find a
single child of the current node, vs. looping through all the node's
children until I find the requested child? Assume the node itself has no
more than 10 child elements in one level only (no grandchildren).

Thanks in advance

Sruli Ganor

> -----Original Message-----
> From: Daniel Veillard [mailto:veillard redhat com] 
> Sent: Wednesday, February 18, 2004 11:59 AM
> To: Israel Ganor
> Cc: 'xml gnome org'
> Subject: Re: [xml] Using Xpath from a node
>
>
> On Wed, Feb 18, 2004 at 11:50:40AM +0200, Israel Ganor wrote:
> > Hi,
> >
> > I've just starting using libxml2.
> > I wonder if there is a way to the the context of an element using a 
> > relative Xpath expression. E.g., soppose my xmlNodePtr 
> points to the 
> > last B element (see below). Now I want to directly read the text of 
> > subelement E, without looping through all B's subelements. Is this 
> > possible? The only way I found so far is to build the full 
> Xpath of E 
> > (from the doc's root) and get it using the full expression, 
> but this 
> > looks like an non-elegant and inefficient.
>
>   You need to change the evaluation context xmlXPathContextPtr
> ctxt->doc should point to the current document, and ctxt->node should
> point to the current node (XPath '.').
>
> Daniel
>
> -- 
> Daniel Veillard      | Red Hat Network https://rhn.redhat.com/
> veillard redhat com  | libxml GNOME XML XSLT toolkit  
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