Re: [xml] filtering a resulting NodeSet with xPath?

[Agustín Villena <avillena tutopia com>]

As I understand, xmlXPathNewContext expect an xmlDocPtr as its argument
Do you mean that I must create an xmlXPathContextPtr for every node from the 
previous resulting nodeSet?

Thanks
   Agustin

----- Original Message ----- 
From: "Chris Burdess" <dog bluezoo org>
To: "Agustín Villena" <avillena tutopia com>
Cc: <xml gnome org>
Sent: Tuesday, November 23, 2004 7:01 AM
Subject: Re: [xml] filtering a resulting NodeSet with xPath?


Agustín Villena wrote:

> It seems that I failed to obtain any attention from the xml gurus... The I 
> must try again.
>
> My doubt is :
> - I don't undestand how libxslt implements its capacity of apply a xpath's 
> query over a nodeset (even if this last is a result of another nodeset), 
> since don't exists any API (in xpath.c) that allows to do so.
>    Does the gurus have any pointer to a way to implement this 
> functionality without using an XSLT transformation?

xmlXPathContextPtr ctx = xmlXPathNewContext (node);
xmlXPathObjectPtr eval = xmlXPathEval (expression, ctx);
xmlXPathFreeContext (ctx);
/* ... do stuff with eval ... */
--
Chris Burdess

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