Re: [xsl] How to create predicate dynamically

[Michael Kay <mike@xxxxxxxxxxxx>]

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