RDQL - A Query Language for RDF HP Labs W3C Member Submission, 9 January 2004 by Andy Seaborne, HP Labs Bristol. The W3C process for this kind of submission is that there is a W3C team comment made, this one by Dan Brickley and Eric Miller. The latter points to the Draft RDF Data Access WG Charter which might take this forward.
I saw a version of this before submission and implemented the grammar parts with flex and bison to build a query tree in my RDF query work-in-progress Rasqal - that's all it does so far, it cannot do queries, but I'll be revisiting this real soon.
In this version, I think I have found a few bugs:
- The
<SUCHTHAT>terminal is not defined, it seemsAND :: = 'AND'should beSUCHTHAT :: = 'AND'. - The non-terminal Identifier
should be
IDENTIFIER. - The terminal Identifier
should include more of the non-terminals
if it tries to be a list of language identifiers;
missing ones include
<SUCHTHAT>(AND) and<USING>although it may be that these make the grammar ambiguous. Personally, I'm not sure allowing identifiers to be the same as keywords is a great idea.
Well that's all so far.