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Re: Behavior of @property with @typeof and incomplete triples

From: Gregg Kellogg <gregg@kellogg-assoc.com>
Date: Fri, 11 Nov 2011 15:24:31 -0500
To: RDFa WG <public-rdfa-wg@w3.org>
Message-ID: <B6463E7C-F862-45C6-BCE5-0C5E600F9278@greggkellogg.net>
No surprisingly, there's a bit more to this.

In Step 5, the first option should be:

[[[
1. If the current element contains the @property attribute, but does not contains neither the @content nor @datatype attributes and the  incomplete triples within the current context is empty, then ...
]]]

Additionally in Step 11, the case where a resource attribute is present also needs to ensure that there are no incomplete triples.

Gregg

On Nov 11, 2011, at 11:58 AM, Gregg Kellogg wrote:

> As I mentioned before, the new @property/@typeof rules break some tests, including 0058. This one is interesting, because it involves the use of both hanging @rels, @typeof and @property.
> 
> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:foaf="http://xmlns.com/foaf/0.1/" version="XHTML+RDFa 1.1">
>  <head>
>    <title>Test 0058</title>
>  </head>
>  <body>
>    <div about="http://www.example.org/#ben" rel="foaf:knows">
>      <p typeof="foaf:Person" property="foaf:name">Mark Birbeck</p>
>      <p typeof="foaf:Person" property="foaf:name">Ivan Herman</p>
>    </div>
>  </body>
> </html>
> 
> The new rules say that because both <p> elements have a @typeof and @property, it results in chaining to a new BNode. This is in Step 5 (part 1). In Step 11, the "otherwise, if @typeof is present ..." causes "typed resource" to be used as the @property value. But, the existence of incomplete triples is intended to pick up these new objects. I think we need to revise this step:
> 
> [[[
> 11.
> ...
> otherwise, if @typeof is present and @about is not and the  incomplete triples within the current context is empty, the value of typed resource.
> ]]]
> 
> This also applies to test 0078, 0081, and 0082.
> 
> Gregg
> 
> 
Received on Friday, 11 November 2011 20:25:10 GMT

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