- From: Seaborne, Andy <andy.seaborne@hp.com>
- Date: Mon, 12 Jun 2006 11:05:50 +0100
- To: RDF Data Access Working Group <public-rdf-dawg@w3.org>
I've just put up a new feature that will display the structure of a SPARQL query: http://www.sparql.org/validator.html If you ask for the abstract format (not the default), then the query string will be parsed and the abstract tree generated by ARQ is displayed. The format is representative - it is not meant to be a formal notation (there isn't a parser for it for example). This is the abstract tree built by ARQ when parsing (useful for debugging ARQ itself) - it tries to be as close as possible to the abstract structure of a SPARQL query. It is not the low-level parse tree. There is no requirement that every implementation generate such a thing - in the past ARQ has more generated structures more directly related to the execution but now it generates this internal structure, then transforms it to an execution plan later. Hope this helps, Andy
Received on Monday, 12 June 2006 10:06:02 UTC