Hi,
I investigated the partially executed SPARQL updates a bit more and it
turned out that I had incorrect assumptions about the updates. The updates
I used were executed in a paged manner (LIMIT/OFFSET) and modified the
bindings selected by their WHERE clauses, so that their paging wasn't
stable and some bindings were left unprocessed.
I also found out that Virtuoso sends the X-SQL-State HTTP header with the
value of "S1TAT" also for SPARQL updates when a short timeout is used. It
may not be exactly the Anytime query feature, but I assume it functions
similarly.
- Jindřich
--
Jindřich Mynarz
http://mynarz.net/#jindrich
On Sun, Oct 30, 2016 at 9:47 PM, Kingsley Idehen <kide...@openlinksw.com>
wrote:
> On 10/30/16 10:50 AM, Jindřich Mynarz wrote:
> >
> > the behaviour you describe is what I'd like to be able to rely on. (In
> > fact, it's the opposite of the Anytime query.) Updates should either
> > be executed completely or fail transparently, so that the incomplete
> > execution may be handled.
> >
> > I will have to test this properly to ensure that partial updates
> > indeed occur.
>
> A partial update shouldn't occur. Now of course in SPARQL that means a
> combination of INSERT and DELETE, so you do have transaction management
> issues in play with regards to commits and rollbacks which exist in SQL
> but not SPARQL.
>
> Please share more information about what you are executing and why you
> think a partial UPDATE may have occurred.
>
> As per your earlier inquiry, Anytime Query is strictly a SELECT or ASK
> query feature.
>
> --
> Regards,
>
> Kingsley Idehen
> Founder & CEO
> OpenLink Software (Home Page: http://www.openlinksw.com)
>
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