Re: [xml] Relative XPath search

["m curcio libero it" <m curcio libero it>]

First of all thank you for the quick response ^___^

I understand the point in your answer and I'm fine with it.
I'm currently forced to use this trick because my previous solution (1.creating a new temporary document, 
2.setting the context node as its root node, 3.performing the relative Xpath search in the "proper" way, 
4.detach the context node from its temporary document) gave me some weird problems in some circumstances 
(nodes "disappearing" ^__^) even if I forced the subtree to point to the temporary document, and then removed 
this pointing, using the xmlSetTreeDoc API on the context node.

There's just one more doubt that I have:
By saying "none of the XPath expressions need to access the root" you're referring to the explicit usage, 
within the XPath string, of axis like 'ancestor', 'ancestor-or-self', 'namespace', 'parent' ?

Thank you again, bye
Massimiliano


---------- Initial Header -----------

> From      : "Daniel Veillard" veillard redhat com
To          : "m curcio libero it" m curcio libero it
Cc          : "xml" xml gnome org
Date      : Wed, 13 Jul 2005 04:59:18 -0400
Subject : Re: [xml] Relative XPath search

> On Wed, Jul 13, 2005 at 10:31:08AM +0200, m curcio libero it wrote:
> > My application needs to be able to do that even if "xmlNode" does not belong to any DOM (that is, a 
> > subtree of nodes created by scratch). I tried to do this:
> >
> > // Create xpath evaluation context
> > xpathCtx = xmlXPathNewContext(NULL);
> >
> > and it seems to be working properly.
> > But I wonder, is that safe ?
>
>   This should be safe as long as none of the XPath expressions need to
> access the root, but this is a non-common situation so you are exposing
> yourself to potential bugs that may have been unnoticed because everybody
> tests with document where all nodes refers to a doc.
>   I can't give a formal "this is safe" statement.
>
> Daniel
>
> --
> Daniel Veillard      | Red Hat Desktop team http://redhat.com/
> veillard redhat com  | libxml GNOME XML XSLT toolkit  http://xmlsoft.org/
> http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/



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