Unless there's going to be a processing error at
"document('s.xml')//Channel" when s.xml does not exist, then the pattern
should be solid here. From the XSLT 1.0 specification:
"When the second argument to the key function is of type node-set, then
the result is the union of the result of applying the key function to
the string value of each of the nodes in the argument node-set."
So, by passing document('s.xml')//Channel as the second argument to
key(), you can bypass the explicit context switch below, and jump right
into processing the key results. I had mentioned before that this is
beneficial only if no other processing is needed for the
document('s.xml')//Channel nodes, but that was part of the original
example.
~ Scott
-----Original Message-----
From: Andrew Welch [mailto:andrew(_dot_)j(_dot_)welch(_at_)gmail(_dot_)com]
Sent: Tuesday, February 19, 2008 11:24 AM
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: Re: [xsl] Using XSLT's key() function while context in
secondary document?
On 19/02/2008, Scott Trenda <Scott(_dot_)Trenda(_at_)oati(_dot_)net> wrote:
<xsl:for-each select="key('chnam', document('s.xml')//Channel)">
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
I don't know the origins of this thread but that looks highly dubious
- the key lookup would be the string value of all of the <Channel>
elements in s.xml.
If this is XSLT 1.0 then the pattern is:
<xsl:variable name="this" select="/">
<xsl:variable name="sDoc" select="document('s.xml')"/>
<xsl:for-each select="$sDoc//Channel">
<xsl:variable name="lookup" select="."/>
<xsl:for-each select="$this">
<xsl:apply-templates select="key('chnam', $lookup)"/>
..
..
In 2.0 its much easier because you don't have to maintain a pointer to
the original source XML, and you have the slash operator, so the
equivalent is:
<xsl:apply-templates select="$sDoc//Channel/key('chnam', ., /)"/>
cheers
--
Andrew Welch
http://andrewjwelch.com
Kernow: http://kernowforsaxon.sf.net/
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