The SPARQL Query Language for RDF W3C Working Draft 2005-02-17 was just published by the RDF Data Access Working Group (DAWG). Lots of work went into this 2nd WD especially by the editors - congratulations. So what's changed? Various things around syntax and some more core bits of the design were decided after our recent DAWG meeting in Helsinki. The
dataset
you query against now uses
WITH instead of LOAD, SOURCE is now GRAPH
in querying. The testing
values
section has
several new RDF-specific builtins
BOUND(), ISURI(), ISBLANK(), ISLITERAL(), STR(), LANG(),
DATATYPE() and also describes the
imported types and operations from XML Query Functions and Operators
on string, double, float, decimal, integer and dateTime.
There are of course, many other changes.
I'm not an editor so just cheered from the sidelines
and did a little updating of my
Rasqal RDF query demo
to catch up with earlier work (using Redland's
Perl binding).
It now does ASK and CONSTRUCT query
results, can give you RDF/XML, XML variable bindings syntax results
and
I also added the SPARQL special builtins listed above.