- From: Seaborne, Andy <andy.seaborne@hp.com>
- Date: Wed, 30 Jul 2008 09:46:57 +0100
- To: Richard Newman <rnewman@franz.com>
- Cc: "saraujo@inf.puc-rio.br" <saraujo@inf.puc-rio.br>, "public-sparql-dev@w3.org" <public-sparql-dev@w3.org>
Richard Newman wrote:
> No.
... officially ... :-)
>
> You have to search by reference, or use some implementation-specific
> technique.
>
> On Jul 29, 2008, at 12:17, saraujo@inf.puc-rio.br wrote:
>
>> Hi everbody, Is It possible search for a blank node with sparql?
>> Ex:
>>
>> select distinct ?p ?o where {_:node13aj7sbgpx251 ?p ?o .}
>>
>> Regards
>> Samur Araujo
>>
>
Direct acces to a Blank node (accessing the graph at a more syntactic
level e.g. editors and RDF lists) came up a couple of times during the
WG discussions and several things emerged:
1/ Several systems "allow" <_:label> to access a blanknode by label.
2/ Externally, you might associate ?bnode with _:node13aj7sbgpx251 (sort
of named parameters to a query)
select distinct ?p ?o where {?bnode ?p ?o .}
3/ List access can be done in a manner like rdfs:member although the
property name is not standard hence different in different systems.
These are defintitely in the "implementation-specific technique" category.
Andy
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Received on Wednesday, 30 July 2008 08:47:43 UTC