RE: [xsl] Reference to variable cannot be resolved.

["Martinez, Brian" <brian.martinez@xxxxxxxx>]

> From: Wendell Piez [mailto:wapiez@xxxxxxxxxxxxxxxx]
> Sent: Thursday, February 13, 2003 12:14 PM
> Subject: Re: [xsl] Reference to variable cannot be resolved.
> 
> Imrran,
> 
> Bind the lookup node set to its variable globally, i.e. outside any 
> templates. Then it will be in scope for any template.
> 
> It also means that the expensive document('lookup.xml') call 
> will happen 
> once, not every time a given template is hit. Not all 
> processors optimize this.

Oops, good point.  My solution would be quite expensive in that context.
Perhaps if the variable was bound in the root template (i.e. match="/"),
then one document() call would suffice provided you passed the lookup node
as a param when needed.

It could just be a matter of style, but I try to avoid using global
variables unless absolutely necessary.  As a side question, what effect is
there in terms of performance or efficiency in having a lot of global
variables declared?  The few programming classes I've taken (using
procedural languages) have taught that a lot of global variables are a Bad
Thing, but maybe that axiom doesn't necessarily apply to XSLT.

b.

| brian martinez                              brian.martinez@xxxxxxxx |
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