Subject: Re: What do we have in variable?
From: Wendell Piez <wapiez@xxxxxxxxxxxxxxxx>
Date: Thu, 09 May 2002 15:21:33 -0400
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Roman,
At 03:11 PM 5/9/2002, you wrote:
I'm just trying to understand, whenever we initialize some variable for
example in that way <xsl:variable name="somevar" select="ancestor::*"/>
what do we have stored inside it? Is it an array or some root node?
It's not an array: there is no such thing in the data model. Nor is it a
root node: it's a node set.
What node set it is, exactly, depends on the context node, which is to say
the node from which the ancestory axis, in this case, is traversed; this
will depend on where the variable declaration occurs (inside which template
or instruction, etc.). The dependence of the node set returned by an XPath
location path on the context in which that location path is invoked is one
of the important subtleties of XPath commonly missed by newcomers to the
language.
Cheers,
Wendell
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Wendell Piez mailto:wapiez@xxxxxxxxxxxxxxxx
Mulberry Technologies, Inc. http://www.mulberrytech.com
17 West Jefferson Street Direct Phone: 301/315-9635
Suite 207 Phone: 301/315-9631
Rockville, MD 20850 Fax: 301/315-8285
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- Re: XSLT/XPath 2.0 (was "Identifying two tags..."), (continued)
- Kurt Cagle - Mon, 13 May 2002 16:55:06 -0400 (EDT)
- Wendell Piez - Mon, 13 May 2002 17:59:14 -0400 (EDT)
- Roma Yankin - Thu, 9 May 2002 15:08:59 -0400 (EDT)
- Jeff Kenton - Thu, 9 May 2002 15:15:49 -0400 (EDT)
- Wendell Piez - Thu, 9 May 2002 15:17:22 -0400 (EDT) <=
- Mike Brown - Thu, 9 May 2002 16:04:55 -0400 (EDT)
- Michael Kay - Thu, 9 May 2002 18:13:14 -0400 (EDT)
- Michael Kay - Thu, 9 May 2002 07:56:56 -0400 (EDT)
- Evan Lenz - Mon, 6 May 2002 17:49:48 -0400 (EDT)
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