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Re: Multiple types in RDFa vs. in Microdata

From: Hausenblas, Michael <michael.hausenblas@deri.org>
Date: Tue, 14 Jun 2011 21:35:19 +0100
Message-ID: <4AB0908E-9F7B-4D70-AE68-188B01559F66@deri.org>
To: "Martin Hepp" <martin.hepp@ebusiness-unibw.org>
Cc: Stéphane Corlosquet <scorlosquet@gmail.com>, <public-lod@w3.org>, <semantic-web@w3.org>
> In fact, I think the better pattern would be to use the "link" element:


OTTOMH, <link> is only allowed in the header, not in the body, hence not the best option.

Cheers,
Michael

On 14 Jun 2011, at 21:14, "Martin Hepp" <martin.hepp@ebusiness-unibw.org> wrote:

> Hi Stéphane, 
> thanks!
> 
> In fact, I think the better pattern would be to use the "link" element:
> 
>> 
>> <div itemscope itemtype="http://www.foo.com/Type1" itemid="http://acme.org/things#1>
>> <link itemprop="http://www.w3.org/1999/02/22-rdf-syntax-ns#type" href="http://www.foo.com/Type2" />
>> </div>
> 
> 
> Martin
> 
> On Jun 13, 2011, at 6:30 PM, Stéphane Corlosquet wrote:
> 
>> Martin, all,
>> 
>> I wrote a blog post summarizing the challenges of using multiple vocabularies in microdata, which includes Martin's snippet as well as another snippet I was given on #whatwg earlier last week.
>> 
>> http://openspring.net/blog/2011/06/10/microdata-multiple-vocabularies

>> 
>> Steph.
>> 
>> On Fri, Jun 10, 2011 at 6:57 PM, Stéphane Corlosquet <scorlosquet@gmail.com> wrote:
>> Hi Martin,
>> 
>> On Fri, Jun 10, 2011 at 6:08 PM, Martin Hepp <martin.hepp@ebusiness-unibw.org> wrote:
>> Dear all:
>> 
>> Until today, I had assumed that one limitation of Microdata was that it did not support more than one class per item, e.g. that you could not state that something was e.g. the intersection of
>> 
>>   http://www.productontology.org/id/Hammer

>> and
>>   http://purl.org/goodrelations/v1#Individual

>> 
>> which, in the context of GoodRelations, means that it is an actual hammer (like in describing antiques or other unique items).
>> 
>> Now, reconsidering the issue, I am no longer convinced that this is valid criticism, because you could use the full URI for rdf:type with itemprop:
>> 
>> <div itemscope itemtype="http://www.foo.com/Type1" itemid="http://acme.org/things#1>
>> <a itemprop="http://www.w3.org/1999/02/22-rdf-syntax-ns#type" href="http://www.foo.com/Type2"></a>
>> </div>
>> 
>> 
>> This should result in
>> 
>>  <http://acme.org/things#1> a <http://www.foo.com/Type1>, <http://www.foo.com/Type2> .
>> 
>> or am I mistaken?
>> 
>> I believe you are correct, and according to the Live Microdata tool, it yields the expected results. here is the link (click on the turtle tab):
>> http://j.mp/iUH2FS

>> 
>> Steph.
>> 
>> 
>> Best
>> Martin Hepp
>> 
>> 
>> 
>> 
> 
> 
Received on Tuesday, 14 June 2011 20:31:04 UTC

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