- From: Sandro Hawke <sandro@w3.org>
- Date: Sun, 27 Jul 2014 12:33:23 -0400
- To: Andy Seaborne <andy@apache.org>, public-ldp-wg@w3.org
On 07/27/2014 11:47 AM, Andy Seaborne wrote:
> On 27/07/14 16:12, Sandro Hawke wrote:
>> 1. I realized allowing single-use blank nodes in the DELETE clause
>> gives us the wildcard functionality I really want, so I can say:
>>
>> PREFIX x: <something...>
>> DELETE DATA {
>> x:me x:name []
>> }
>> INSERT DATA {
>> x:me x:name "John Smith"
>> }
>
> but it is then not SPARQL Update semantics. You would need DELETE WHERE.
>
Rats, I guess that's why I left it out earlier. Thanks for the catch.
I suppose we could add a WHERE clause that's restricted to containing
exactly the triples in the DELETE DATA clause which contain variables.
I think that would do the right thing in SPARQL, and a non-SPARQL
processor could ignore it and treat variables as wildcards.
So, that would make patches a little longer, and it would make the
syntax of the DELETE DATA clause be Turtle + ?variables, not just Turtle.
> Andy
>
> PS Is human read/writeablity a requirement for LDP-Patch?
>
>
No, I don't think so.
-- Sandro
Received on Sunday, 27 July 2014 16:33:30 UTC