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Re: Straw Poll (ISSUE-1)

From: Toby Inkster <tai@g5n.co.uk>
Date: Tue, 25 Oct 2011 16:49:45 +0100
To: public-html-data-tf@w3.org
Message-ID: <20111025164945.042613be@miranda.g5n.co.uk>
On Tue, 25 Oct 2011 13:59:43 +0100
Toby Inkster <tai@g5n.co.uk> wrote:

> 1. all processors use the same (default) mapping for all
> vocabularies

I'll add that there's nothing to prevent this mapping from being
non-trivial.

Consider:

	<div itemscope itemtype="$foo">
	  <span itemprop="$bar">Bar</span>
	</div>

where $foo is a full URL and $bar is a short name.

A single (but complex mapping could be)...

i. Find the final occurrence of '#' or '/' in $foo, and split the
string $foo on that character. Call the portion before it $pfx and
the portion afterwards $sfx, and the character that was split on
$char.

ii. If $char is '#' then the full URI for $bar is CONCAT($pfx, '#',
$bar).

iii. If $char is '/' and $sfx begins with a lowercase letter, then the
full URI for $bar is CONCAT($foo, '#', $bar)

iv. If $char is '/' and $sfx begins with an uppercase letter, then
continue reducing $pfx by splitting it into ($pfx, $char, $sfx) based
on its last '/' character until either $sfx does not begin with an
uppercase letter, or $pfx has been reduced to a minimum prefix. The
definition of a minimum prefix will vary based on URI scheme, but for
HTTP and HTTPS would be "http://" or "https://" followed by an
authority (i.e. hostname/IP with optional port designation). After a
final $pfx has been reached, the full URI for $bar is CONCAT($pfx, '/',
$bar).

This single (albeit complex) mapping seems to cover http://schema.org/,
http://microformats.org/profile/hcard, http://n.whatwg.org/work, Google
Rich Snippets, and most other common RDF vocabs including FOAF, SIOC,
SKOS, OWL, etc.

It requires no dereferencing to do the mapping, no special knowledge of
any vocabularies, and no registry system.

Examples of the mapping in action:

$foo    = "http://schema.org/Person"
$bar    = "name"
$result = "http://schema.org/name"

$foo    = "http://schema.org/Person/Employee/AcmeCorpEmployee"
$bar    = "name"
$result = "http://schema.org/name"

$foo    = "http://xmlns.com/foaf/0.1/Person"
$bar    = "name"
$result = "http://xmlns.com/foaf/0.1/name"

$foo    = "http://example.com/vocab#Person"
$bar    = "name"
$result = "http://example.com/vocab#name"

$foo    = "http://example.com/vocab/person"
$bar    = "name"
$result = "http://example.com/vocab/person#name"

-- 
Toby A Inkster
<mailto:mail@tobyinkster.co.uk>
<http://tobyinkster.co.uk>
Received on Tuesday, 25 October 2011 15:49:05 GMT

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