- From: Seaborne, Andy <Andy_Seaborne@hplb.hpl.hp.com>
- Date: Mon, 17 Sep 2001 09:09:46 +0100
- To: www-rdf-interest@w3.org, www-rdf-rules@w3.org
RDQL - RDF Data Query Language http://www-uk.hpl.hp.com/people/afs/RDQL/ RDQL is a query language for Jena [1]; it is an implementation of SquishQL [2] for use in Java programs and scripting environments. It views RDF as a logical data model in the style described in [3]. Data retrieval is by returning an iterator of sets of bound variables; there is also a command line interface for exploring RDF datasets. Examples: All the triples in the model: SELECT * WHERE (?x, ?y, ?z) The contents of bags: SELECT ?b, ?y WHERE (?b, <rs:type>, <rs:Bag>), (?b, ?x, ?y) AND ! ( ?x eq <rs:type> && ?y eq <rs:Bag> ) USING rs FOR <http://www.w3.org/1999/02/22-rdf-syntax-ns#> This is a first "preview" release - I would greatly appreciate feedback on the language and its implementation. Andy andy_seaborne@hp.com [0] http://www-uk.hpl.hp.com/people/afs/RDQL/ [1] http://www-uk.hpl.hp.com/people/bwm/rdf/jena/index.htm [2] http://swordfish.rdfweb.org/rdfquery/ [3] http://www.w3.org/TandS/QL/QL98/pp/enabling.html
Received on Monday, 17 September 2001 04:09:51 UTC