Re: How to create predicate dynamically

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Subject: Re: How to create predicate dynamically
From: Michael Kay <mike@xxxxxxxxxxxx>
Date: Fri, 25 May 2012 12:32:23 +0100

If it needs to be completely dynamic, then you need something like saxon:evaluate(), and you need to solve the problem with the apostrophes ;-)

One way to do that (and also to protect against code injection) is to generate a call using parameters:

saxon:evaluate("*[@type = $p1 or @type=$p2]", 'mc', 'ti')

But I wonder if it does need to be completely dynamic? Would

<xsl:variable name="x" select="('mc', 'ti')"/>
<... *[@type = $x] >

solve the problem?

Michael Kay
Saxonica

On 25/05/2012 10:55, Jesper Tverskov wrote:

Hi

I need to create predicates like the following dynamically:

[@type = 'mc' or @type='ti']
I need the full content of the predicate to be created in a variable
"x", to be inserted in the predicate like:
//qa [$x]
I have tried using saxon:evaluate() but run into problems with
apostrophes. What to do?
Cheers
Jesper Tverskov

Current Thread
How to create predicate dynamically Jesper Tverskov - 25 May 2012 09:55:19 -0000 Michael Müller-Hillebrand - 25 May 2012 10:31:32 -0000 Michael Kay - 25 May 2012 11:32:37 -0000 <= Jesper Tverskov - 25 May 2012 12:00:32 -0000

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