RE: [xsl] DOM and XML parser

["Américo Albuquerque" <aalbuquerque@xxxxxxxxxxxxxxxx>]

Hi Jeni!
yes, it is an interesting idea. but that whouldn't be the same as
setting the variable after the match??
like:
<xsl:template match="book[@price]">
 <xsl:variable name="v" select="@price"/>
 ...



-----Original Message-----
From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx
[mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of Jeni
Tennison
Sent: Saturday, August 17, 2002 10:46 AM
To: Didier PH Martin
Cc: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [xsl] DOM and XML parser


Hi Didier,

> Jeni said:
> [Taking the analogy with regexps further, there was an interesting
> talk at Extreme which touched on the possibility of getting more
> detailed information returned from matching on an XSLT pattern in much

> the same way as you might get more detailed information returned from
> matching on a regexp, about the submatches within the pattern/regexp.]
>
> Didier replies:
> Gee, sound interesting. Its too bad I couldn't be at the conference.
> It sounds like a lot of interesting stuff happened there. Do you mean
> that more than a boolean value could be returned? Like, for instance,
> some info about the node's contained collection, is that it?

The talk was about binary queries in the fxgrep/fxt work at the
University of Trier. See http://www.informatik.uni-trier.de/PSI/DocML/
for information, and their paper is at
http://www.informatik.uni-trier.de/~aberlea/publications/extreme2002/que
ries.pdf.

As I understood it, it was a way of assigning variables based on things
that were matched during the pattern match. If you have a '%' in front
of a location path within an expression then the node-set identified by
that location path is assigned to a variable. So for
example:

<xsl:template match="book[%@price]">
  ...
</xsl:template>

then the current node is the book element (as normal) and the variable
$1 (I think) is the price attribute.

The rest of the paper got rather technical about querying using forest
grammars and things, but I thought this was quite an interesting idea.

Cheers,

Jeni

---
Jeni Tennison
http://www.jenitennison.com/


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