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RE: [xsl] Easy Key-grammar Question

2006-09-26 11:32:57
If you need to find the items with @group != 0 frequently, use a global
variable:

<xsl:variable name="nonzeroitems" select="//item[(_at_)group != 0]"/>

If you don't need them frequently, then you don't need a key.

If "0" is actually a variable, then a key isn't going to help.

Michael Kay
http://www.saxonica.com/

-----Original Message-----
From: Bob Portnell [mailto:simply(_dot_)bobp(_at_)gmail(_dot_)com] 
Sent: 26 September 2006 19:08
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] Easy Key-grammar Question

(And yet I don't see it clearly in the FAQ)

So, I've been handed

<xsl:for-each select="//item[(_at_)group != 0]">

The structure cries out for a key, and conveniently I already 
have established <xsl:key name="ItemByGrp" match="item" 
use="@group" />

Now, if I wanted the <item>s with @group='0', I'd use the 
function key('ItemByGrp', 0). No fuss.

How do I opposite? *Can* I do the opposite, or am I better 
off leaving it alone? Should I create a more refined key 
definition thus?

<xsl:key name="GroupedItems" match="item[(_at_)group !=0]" use="@group" />

Curiosity abounds!

Bob Portnell
simply(_dot_)bobp(_at_)gmail(_dot_)com

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