Re: [xsl] can a variable hold a node set?

["G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>]

At 2009-05-12 09:36 -0400, Dmitri Snytkine wrote:
> I made a template for replacing strings with translated value using
> the lookup table. The lookup table is included in the template, so I
> can access it with
> document('')
>
> But since there usually over 10 strings that have to be translated on
> a single page, I think it's not efficient to call document('') 10
> times.

False ... the processor is obliged to cache the document tree created 
by the document() function.

> Is there a way to copy the value of document('')/*/trans:tr to a
> variable and then access that variable 10 times?
> Can a variable hold the node set?

Yes:

<xsl:variable name="trs" select="document('')/*/trans:tr"/>

> Would this make sense?

Yes because then you aren't traversing the in-memory tree.  So you 
may be saving time on accessing the tree, but you won't be saving 
time on accessing the document.

> If yes, then how can I change this template?

From the snippet I see I would make the variable $trs (above) global.

Or even go one level farther down the tree:

 <xsl:variable name="trstrings" select="document('')/*/trans:tr/tr_string"/>

Then:

 <xsl:value-of select="$trstrings[@str=$str]/*[local-name()=$toLang]"/>

I hope this helps.

. . . . . . . . . . Ken

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