Re: SPARQL Extension Functions Survey

hi leigh,

there might be not much of a documentation for sesame sparql functions,
but they do exist and are pretty easy to implement.

checkout the the org.openrdf.query.algebra package in their apidoc or 
at their source repository 
@ http://repo.aduna-software.org/svn/org.openrdf/sesame/

i personally implemented a namespace filterfunction

http://www.openrdf.org/forum/mvnforum/viewthread?thread=1816#6651

just for fun.

and a PorterStem function which currently only works in SERQL.

wkr www.turnguard.com

----- Original Message -----
From: "Leigh Dodds" <leigh.dodds@talis.com>
To: public-sparql-dev@w3.org
Sent: Tuesday, October 6, 2009 4:10:53 PM GMT -05:00 US/Canada Eastern
Subject: SPARQL Extension Functions Survey

Hi,

I've started doing a survey of various SPARQL extensions. The survey
is going to be in two parts. The first will look at SPARQL extension
functions, i.e. extensible value testing. The second will look at
property functions (aka magic predicates, etc). My overall goal is to
try and pull together lists of the various functions to help promote
some cross-pollination and convergence. I'm hoping the SPARQL WG might
find this useful.

I've made a first pass at a review of the extension functions. You can
look at the info here:

http://spreadsheets.google.com/pub?key=tl2FDWghDKDc3G70xKkNoNg&output=html

I've put it into a spreadsheet initially for my own convenience but
will publish it somewhere else once its completed.

If you have know of any engines that support either extension
functions or property functions then please drop me a mail. Similarly
if you think I've made any mistakes or omissions then please feel free
to correct me. Its entirely possible I've overlooked something (its
late! ;)

Cheers,

L.
-- 
Leigh Dodds
Programme Manager, Talis Platform
Talis
leigh.dodds@talis.com
http://www.talis.com

Received on Tuesday, 6 October 2009 20:40:21 UTC