- From: Seaborne, Andy <andy.seaborne@hp.com>
- Date: Wed, 19 Mar 2008 09:53:58 +0000
- To: Richard Newman <rnewman@twinql.com>, Andrew Newman <andrewfnewman@gmail.com>
- CC: Lee Feigenbaum <lee@thefigtrees.net>, Arjohn Kampman <arjohn.kampman@aduna-software.com>, "public-rdf-dawg-comments@w3.org" <public-rdf-dawg-comments@w3.org>
> -----Original Message-----
> From: Richard Newman [mailto:rnewman@twinql.com]
> Sent: 19 March 2008 00:59
> To: Andrew Newman
> Cc: Seaborne, Andy; Lee Feigenbaum; Arjohn Kampman; public-rdf-dawg-
> comments@w3.org
> Subject: Re: Another attempt...
>
> > Okay, so here's an test case that currently ends with an
> > OutOfMemoryException in SPARQLer and Twinkle:
> > SELECT ?x
> > WHERE {
> > {} UNION
> > {
> > {} UNION {}
> > }
> > }
> >
> > I'm not sure why it's happening - but it's obviously being evaluated
> > different to my previous example (without the extra level of curly
> > braces) and it should be trivial to work out.
>
> In twinql (either AllegroGraph 2.2.5 or the unreleased 3.0) this
> produces three empty results:
>
> <?xml version="1.0"?>
> <sparql xmlns="http://www.w3.org/2005/sparql-results#">
> <head>
> </head>
> <results>
> <result>
> </result>
> <result>
> </result>
> <result>
> </result>
> </results>
> </sparql>
>
> Sounds like a bug in someone's software.
Old code, old bug. I redeployed sparql.org:
I get:
-----
| x |
=====
| |
| |
| |
-----
Andy
Received on Wednesday, 19 March 2008 09:55:35 UTC