From: <Sridhar_Ramachandran@xxxxxx>

> 
> Hi,
>      I am trying to store an xpath expression in variable and trying to
> evaluate it and storing the results in another variable. The xpath
> expression used might depend on the value of some parameter(s) passed to
> the style sheet. 

Welcome to the club. 

The simplest solution is to use SAXON engine 
which understands saxon:evaluate extension function.

saxon:evaluate is not a part of W3C specs  so it is 
not portable.

I have implemented the xml 'grep' in 'plain'  
XSLT  ( my xml 'grep' is part of Ux v 0.3 
available for browsing at http://www.pault.com/Ux/)

I came to conclusion that :

<conclusion>
For some cases saxon:evaluate is *much* better than 
any conformant solution. 
</conclusion>

I think the number of those cases will keep growing. 
The more flexible ( and universal ) you want your stylesheet 
to be - the bigger is your need in saxon:evaluate. 

So maybe Sebastian was in some way correct when 
he was talking about his 'naive' usage of XSLT ;-)

Rgds.Paul.



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