W3C home > Mailing lists > Public > public-powderwg@w3.org > April 2008

single include/exclude pair in vanilla POWDER/XML and POWDER-S

From: Stasinos Konstantopoulos <konstant@iit.demokritos.gr>
Date: Fri, 18 Apr 2008 08:41:05 +0300
To: Phil Archer <parcher@icra.org>
Cc: public-powderwg@w3.org
Message-ID: <20080418054105.GB8870@iit.demokritos.gr>

On Mon Apr  7 20:33:51 2008 Phil Archer said:

> As for the ISAN example and the lack of support for value extraction in 
> XML regular expressions, we said way back that we'd use XML patterns _as 
> modified by_ XQuery 1.0 and XPath 2.0 Functions and Operators [5] but I 
> don't think even this allows for what we'd need here. But I don't think 
> it matters... it's up to the extension author to define the regular 
> expression, and in the case of ISAN, it would just be a case of matching 
> a portion of the number - I wouldn't worry too much about this.

I looked into XQ and XP a bit, and their operators do all POWDER needs
to reduce everything into XML facets (patterns and numerical
restrictions); it would be really easy to get rid of hasPort and
hasIP using the XQ/XP operators. It would allow to give example
extensions to handle ISAN and ISBN ranges and a whole bunch of nice
human-readability and usability extensions without touching the
underlying semantics. But I'll need some help from fellow POWDERites:
I need a sample XML fragment saying:
"this is a new XML type. things that are of of this type, obey facet
restrictions so-and-so, after applying XSLT so-and-so to the original

Received on Friday, 18 April 2008 05:41:43 UTC

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