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Re: Does RDFa processing recurse into content:encoded?

From: Stephane Corlosquet <scorlosquet@gmail.com>
Date: Mon, 8 Feb 2010 16:01:20 -0500
Message-ID: <1452bf811002081301w515e3692kb2837a0248cb4954@mail.gmail.com>
To: Richard Cyganiak <richard.cyganiak@deri.org>
Cc: Public RDFa <public-rdfa@w3.org>, Michael Hausenblas <michael.hausenblas@deri.org>, Lin Clark <lin.clark@deri.org>, Tobias Wunner <tobias.wunner@deri.org>
I think this use case would make a good candidate for the next version of
RDFa.

Steph.

On Mon, Feb 8, 2010 at 3:52 PM, Richard Cyganiak
<richard.cyganiak@deri.org>wrote:

> So the options are to willfully violate the RDFa spec, or to put the same
> thing in the page twice. I don't like either of those.
>
> Thinking more about the issue, it occurs to me that one could argue that
> the foaf:name triple is “there” anyways, even if the RDFa spec says it's
> not: it's encoded *inside* the rdf:XMLLiteral. An RDFa processor that finds
> an XMLLiteral inside a web page could certainly decide to parse that literal
> for RDFa markup as well.
>
> Richard
>
>
>
>
> On 8 Feb 2010, at 20:16, Stephane Corlosquet wrote:
>
>  Hi Richard,
>>
>> This is correct and was brought in a previous thread. In fact we've added
>> this content:encoded mapping knowingly. However, despite the fact this is
>> not part of the RDFa specs, some parsers could ignore this restriction and
>> try to parse the content of this rdf:XMLLiteral. I don't think there is
>> any
>> problem with that? expect convincing RDFa parsers developers :D
>>
>> Alternatively, in order to be in line with the specs, some extra (hidden)
>> RDFa markup could be generated outside the body element which would
>> reflect
>> the content of the body. So Richard's example would become:
>>
>> <div class="body" property="content:encoded">
>> <p about="#me">
>>  Hi, I'm <span property="foaf:name">Richard</span>!
>> </p>
>> </div>
>> <div class="hidden-rdfa">
>> <span about="#me" property="foaf:name" content="Richard" />
>> </div>
>>
>> This would involve RDFa parsing the content which ARC2 can do.
>>
>> Steph.
>>
>> On Mon, Feb 8, 2010 at 2:29 PM, Richard Cyganiak
>> <richard.cyganiak@deri.org>wrote:
>>
>>  Hi,
>>>
>>> A question. What triples are generated from the following HTML+RDFa
>>> snippet?
>>>
>>> <div class="body" property="content:encoded">
>>> <p about="#me">
>>>  Hi, I'm <span property="foaf:name">Richard</span>!
>>> </p>
>>> </div>
>>>
>>> My reading of the spec is that it should create one triple, with subject
>>> <>, property [content:encoded], and an rdf:XMLLiteral as object.
>>>
>>> My reading is that no foaf:name triple is generated, because RDFa
>>> processing doesn't recurse into rdf:XMLLiterals.
>>>
>>> Is this correct?
>>>
>>> I'm asking because Drupal 7 puts a property="content:encoded" on the body
>>> of any page, which is a reasonable thing to do, but according to my
>>> understanding means that you cannot put RDFa markup into the body of a
>>> Drupal 7 page (because RDFa processing doesn't recurse into the body). If
>>> that's indeed the case, then I'll probably have to raise this as an issue
>>> with the Drupal folks.
>>>
>>> Thanks a lot,
>>> Richard
>>>
>>>
>>> --
>>> Linked Data Technologist • Linked Data Research Centre
>>> Digital Enterprise Research Institute (DERI), NUI Galway, Ireland
>>> http://linkeddata.deri.ie/
>>> skype:richard.cyganiak
>>> tel:+353-91-49-5711
>>>
>>>
>>>
>>>
> --
> Linked Data Technologist • Linked Data Research Centre
> Digital Enterprise Research Institute (DERI), NUI Galway, Ireland
> http://linkeddata.deri.ie/
> skype:richard.cyganiak
> tel:+353-91-49-5711
>
>
Received on Monday, 8 February 2010 21:07:42 GMT

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