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Re: wildcard resource representation

From: Garret Wilson <garret@globalmentor.com>
Date: Wed, 01 Aug 2007 10:19:21 -0700
Message-ID: <46B0C099.6030905@globalmentor.com>
To: Phil Archer <parcher@icra.org>
CC: Semantic Web <semantic-web@w3.org>

Phil,

Phil Archer wrote:
>
> As ever there are many ways to skin this cat. The POWDER Working Group 
> is trying to solve a very similar problem of applying triples to 'all 
> resources on example.org' (and other more complex groupings), which I 
> guess is similar to Garret's <mailto:*.*>.
>
> We have ended up with the concept of a Resource Set, the first public 
> working draft of which is at [1]. We'd define a Class representing all 
> resources that have e-mail addresses as
>
> [] a wdr:ResourceSet;
>    wdr:includeSchemes "mailto";

This is very interesting. Two questions. First, how stable is this? 
Should the namespace http://www.w3.org/2007/05/powder# change?

Secondly, how do I specify "all resources"? (In my case, some resources 
may use mailto: URIs, others may use UUID URIs.) Am I stuck with the 
following, or is there a shorthand representation?

<wdr:ResourceSet>
  <wdr:includeUriPattern>*</wdr:includeUriPattern>
</wdr:ResourceSet>

And would the above also match resources that have no URI identifier 
(i.e. blank nodes)?

Garret
Received on Wednesday, 1 August 2007 17:19:37 GMT

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