Andrew,

Aren't variables only evaluated when they are referenced in a later xpath expression?

You would choose the ones to evaluate by only selecting constructs that use these variables.

This way, you could set up any number of boilerplate variables and only the ones that are actually used in the stylesheet execution will be evaluation.


That could be by including the constructs that reference the variables in:

xsl:choose

xsl:if

xsl:template

xsl:function


Hoping that's useful

-alan





De :        Andrew Welch <andrew.j.welch@gmail.com>
A :        Mailing list for the SAXON XSLT and XQuery processor <saxon-help@lists.sourceforge.net>
Date :        02/19/2014 04:57 PM
Objet :        [saxon] Selectively evaluate variables at runtime




Hi,

Given some variables in an xslt:

<xsl:variable name="one" select="....."/>
<xsl:variable name="two" select="......."/>
<xsl:variable name="three" select="......."/>

Is there a way to selectively evaluate some of them at runtime, for
example somehow say "one and three, but not two" ?

The ultimate aim is to have very large store of xpaths in the xslt (or
xquery), and then choose which ones to run at transform time.

I'm trying to avoid parsing the xpaths out and running them
externally... but that's looking like the only option at moment.

Of course if anyone knows of a better place to store several hundred
xpaths, please let me know.


--
Andrew Welch
http://andrewjwelch.com

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