Re: [xsl] switching designs in xsl

Subject: Re: [xsl] switching designs in xsl
From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>
Date: Mon, 15 Dec 2003 11:41:02 -0500
At 2003-12-15 15:59 +0100, Kloeck, Erwin wrote:
I do some xsl:fo formatting that depends on the value of an element <design-id value="design-001" />. I keep the xsl stylesheets for each design in a separate directory 'design-001'. Currently, I import all designs in my start xsl and then switch according to the value of the design-id. This works but has the disadvantage that all templates, attribute-sets etc have to be globally distinct, which I do by prefixing them with a
design-marker, e.g. 'd001-'. This strikes me as not very elegant. What would be a more clever way to do this?

Many aspects of XSLT stylesheet processing require everything to be known at stylesheet writing time, including the name of every called template, all modes, match patterns (which is why they cannot have variables), etc.

Therefore, there are no run-time methods you can take advantage of for what you ask.

Have you considered synthesizing an included template that does as many xsl:includes and as many xsl:whens as you have fragments? Then your hand-authored fragment can just call the "dispatch" named template passing the testable parameter and your synthesized fragment then dispatches to the appropriately included fragment?

This would keep your hand-authored fragment succinct and using XSLT to synthesize the included fragment would be a robust way of ensuring you have no typographical errors in the references to included fragments or called templates.

I hope this helps.

........................... Ken

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