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Re: RDF 1.1 IRIs and %-escaping

From: David Booth <david@dbooth.org>
Date: Thu, 09 Aug 2012 19:54:51 -0400
To: Steve Harris <steve.harris@garlik.com>
Cc: Richard Cyganiak <richard@cyganiak.de>, Dan Brickley <danbri@danbri.org>, Andy Seaborne <andy.seaborne@epimorphics.com>, public-rdf-comments Comments <public-rdf-comments@w3.org>, Giovanni Tummarello <giovanni.tummarello@deri.org>, Graham Klyne <gk@ninebynine.org>
Message-ID: <1344556491.2551.165.camel@dbooth-laptop>
I agree 100%.

David

On Wed, 2012-08-08 at 12:05 +0100, Steve Harris wrote:
> +1
> 
> This is one of the few annoyances in RDF that we can fix with little pain.
> 
> - Steve
> 
> On 2012-08-08, at 12:01, Richard Cyganiak wrote:
> 
> > Dan,
> > 
> > On 8 Aug 2012, at 00:14, Dan Brickley wrote:
> >> Does Sindice keep a cache of raw crawled RDF somewhere?
> > 
> > My understanding is that there are caches of raw bytes.
> > 
> >> I know this would be extra work for someone though :(
> > 
> > I can't speak for Giovanni, but I think this might be a slight understatement given that the standard Sindice infrastructure cannot be used, and given that the behaviour of normal off-the-shelf components and of the whole SPARQL stack with regard to spaces in URIs would need to be carefully looked into to analyze this (in other words, this isn't a job for an intern). It may not be worth it.
> > 
> > Some points:
> > 
> > 1. RDF 2004 is the only standard on the planet that allows spaces in URIs/IRIs
> > 
> > 2. This is the result of historical accident and WG timing (the IRI spec was still in draft status, and the 2004 RDF-WG thought it important to remain compatible with early IRI drafts)
> > 
> > 3. Spaces in URIrefs don't actually work interoperably in implementations of RDF 2004
> > 
> > 4. Spaces in URIrefs don't work within the broader RDF stack (SPARQL doesn't support them)
> > 
> > 5. Not a single instance where spaces in URIrefs are used intentionally has been shown
> > 
> > 6. Not a single instance where SPARQL's non-support for spaces in IRIs has led to user complaints has been shown
> > 
> > 7. The RDF-WG charter asks the WG to update RDF to follow SPARQL with regard to IRIs
> > 
> > To me, this is sufficient evidence that the change we made for RDF 1.1 is the right thing to do.
> > 
> > Best,
> > Richard
> 

-- 
David Booth, Ph.D.
http://dbooth.org/

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Received on Thursday, 9 August 2012 23:55:18 UTC

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