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Re: telecon Thursday, 1600 UTC

From: Manu Sporny <msporny@digitalbazaar.com>
Date: Fri, 21 Dec 2007 11:56:17 -0500
Message-ID: <476BF031.8050601@digitalbazaar.com>
To: RDFa <public-rdf-in-xhtml-tf@w3.org>

Ivan Herman wrote:
> Sorry, 'contradiction' is not the right word, I just realized.
> Contradiction in the sense that the behaviour of @rel and @instanceof
> becomes very different. Indeed, if I modify the example below, what you
> seem to say is that the following:

My understanding of the current @instanceof rules is that what you
expect, Ivan, is what would be generated:

<div about="#q" rel="q:r">
   <div instanceof="a:b"/>
</div>

would generate:

<#q> <q:r> _:x.
_:x <rdf:type> <a:b>.

Let's take it step-by-step to see if there is any disagreement on what
an implementation would do:

<div about="#q" rel="q:r">

At this point in the process, we have the following data in the parser:

<#q> <q:r> [UNKNOWN_HANGING_REL_OBJECT]

When we process the next line,

<div instanceof="a:b"/>

At this point in the process, we have the following data in the parser:

<#q> <q:r> [UNKNOWN_HANGING_REL_OBJECT].  <---- incomplete triple
_:x <rdf:type> <a:b>.                     <---- complete triple

The parser would then, upon seeing a target object for the
UNKNOWN_HANGING_REL, which is _:x, complete that triple. This would
result in the following data, and complete triples, in the parser:

<#q> <q:r> _:x.
_:x <rdf:type> <a:b>.

Does that make sense? Mark, Ben, Ralph, was this your understanding of
the processing rules for @instanceof as well?

-- manu

-- 
Manu Sporny
President/CEO - Digital Bazaar, Inc.
blog: Over One Million Songs Available on Bitmunk
http://blog.digitalbazaar.com/2007/10/29/one-million-songs-on-bitmunk/
Received on Friday, 21 December 2007 16:56:41 GMT

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