- From: Steve Harris <steve.harris@garlik.com>
- Date: Fri, 8 Jan 2010 11:09:29 +0000
- To: Paul Gearon <gearon@ieee.org>
- Cc: Andy Seaborne <andy.seaborne@talis.com>, SPARQL Working Group <public-rdf-dawg@w3.org>
On 7 Jan 2010, at 21:06, Paul Gearon wrote:
>
>> Some related issues in update are about adding triples into an
>> empty graph
>> vs a non-existent graph (does it automatically get created?)
>
> I'd rather not. If this is needed then it can be done with:
> CREATE SILENT <uri>
> INSERT DATA { GRAPH <uri> { triples } }
I have a very strong preference for not requiring an explicit CREATE,
I've already encountered usecases where this makes things very
annoying, e.g. I'd like to:
INSERT {
GRAPH ?s { ?s ?p ?o }
}
WHERE {
?s a :Thing .
?s ?p ?o .
}
4store would require some work to detect new graph URIs being used,
and explicitly create a graph, but I think it's worth it to avoid
annoying users.
N.B. it's not necessary to detect removing the last triple from a
graph, as that doesn't necessarily have to explicitly remove the graph.
- Steve
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Received on Friday, 8 January 2010 11:10:08 UTC