- From: Seaborne, Andy <andy.seaborne@hp.com>
- Date: Tue, 15 Mar 2005 16:04:47 +0000
- To: "Thompson, Bryan B." <BRYAN.B.THOMPSON@saic.com>
- Cc: "'public-rdf-dawg@w3.org'" <public-rdf-dawg@w3.org>
Thompson, Bryan B. wrote:
> Hello,
>
> The example in 9.3 currently uses a URN (vs a URL) to specify the FROM
> graphs (data:graph1, data:graph2). This seems like an error.
>
> PREFIX data: <urn:x-local:>
> PREFIX foaf: <http://xmlns.com/foaf/0.1/>
> Prefix dc: <http://purl.org/dc/elements/1.1/>
>
> SELECT ?name ?mbox ?date
> WITH data:details
> FROM data:graph1 data:graph2
> WHERE
> ( ?g dc:publisher ?name)
> ( ?g dc:date ?date )
> GRAPH ?g
> {
> ( ?person foaf:name ?name )
> ( ?person foaf:mbox ?mbox )
> }
>
> Thanks,
>
> -bryan
>
Bryan,
It was intentional - the idea is to stress that they are local, internal
identifiers allocated when the same URL is read at two different times (rsulting
is two different graphs - the graph is changing). I guess that http://localhost
(not good in my opinion- not unique) or urn:uuid: could also be used to emphasis
this point or http://serversitename.com/id/1234
The working group resolved to remove WITH and FROM (i.e. the whole of section 9)
at the face-to-face meeting to avoid overlap with the protocol.
Thanks for noting it,
Andy
Received on Tuesday, 15 March 2005 16:04:59 UTC