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Re: Storing xpath expressions in a vaiable

Subject: Re: Storing xpath expressions in a vaiable
From: Paul Tchistopolskii <paul@xxxxxxx>
Date: Thu, 28 Sep 2000 19:07:35 -0700
Re: Storing xpath expressions in a vaiable
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 :

For some cases saxon:evaluate is *much* better than 
any conformant solution. 

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 ;-)


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