- From: Dave Beckett <dave@dajobe.org>
- Date: Thu, 17 Nov 2011 19:47:29 -0800
- To: 'Semantic Web' <semantic-web@w3.org>
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Rasqal RDF Query Library 0.9.28 http://librdf.org/rasqal/ Rasqal is a free software / Open Source C library that handles Resource Description Framework (RDF) query language syntaxes, query construction and execution of queries returning results as bindings, boolean, RDF graphs/triples or syntaxes. The supported query languages are: SPARQL 1.0, RDQL, Draft SPARQL Query 1.1[3], Update 1.1[4] and Experimental SPARQL extensions (LAQRS). Rasqal can write binding query results in the following formats: SPARQL XML, SPARQL JSON, CSV, TSV, HTML, ASCII tables, RDF/XML and Turtle / N3 and read them in SPARQL XML, RDF/XML and Turtle / N3. Rasqal is designed to work closely with the Redland librdf[1] RDF API library and the Raptor[2] RDF Syntax Library but is entirely separate from both. Rasqal is beta quality; the API is still changing and the SPARQL support is under development. It is a portable library and has been tested on multiple POSIX systems and architectures. Rasqal has no known memory leaks. The main changes in this version since the last release 2011-08-23 are: * Added full support for SPARQL 1.1 draft STRBEFORE, STRAFTER and REPLACE. * Add internal Mersenne Twister PRNG or choose others via configure Language name 'sparql' is now SPARQL 1.1 * The query result formats now all use the W3C Format URIs as their primary URI * Improved configure check for for ceil(), floor() and round() to prevent GCC optimizing the test away and getting the wrong answer * Made other fixes and improvements including fixing reported Issues: 0000466, 0000467, 0000470, 0000471 and 0000474. For full details see the Rasqal 0.9.28 release notes at http://librdf.org/rasqal/RELEASE.html#rel0_9_28 The Rasqal API reference manual section on API changes at http://librdf.org/rasqal/docs/api/raptor-changes.html provides detailed function, enum, macro and type changes. Rasqal 0.9.28 requires Raptor 2.0.4[2] or newer to provide RDF syntax, web, XML and URI support. Optional requirements are a POSIX regular expression library such as PCRE or one built into the C library to handle regex matching / replacing and a multi-precision decimal library such as GNU MP or MPFR for handling XSD decimals. Binary deb packages for Debian unstable will be made available later via the standard Debian archive. The http://librdf.org/ site lets you browse and check out the latest version of the sources in GIT and try out Rasqal (as part of Redland) in a web demonstration at http://librdf.org/query and as part of Triplr http://triplr.org/ For more information on Redland, Raptor or Rasqal please join the redland-dev list by visiting http://librdf.org/lists/ or visit IRC channel #redland on irc.freenode.net Issues should be reported to http://bugs.librdf.org/ Dave [1] Redland librdf RDF API library, http://librdf.org/ [2] Raptor RDF Syntax Library, http://librdf.org/raptor/ [3] SPARQL 1.1 Query W3C Working Draft of 2011-05-12 http://www.w3.org/TR/2011/WD-sparql11-query-20110512/ [4] SPARQL 1.1 Update W3C Working Draft of 2011-05-12 http://www.w3.org/TR/2011/WD-sparql11-update-20110512/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (Darwin) iD8DBQFOxdVPQ+ySUE9xlVoRAg4oAJ0Wn9B2+Dty6ClEoh5BCMxryKPzqQCZASZp uV/F5rDQem6WwYwSt4Tth7c= =4Wm+ -----END PGP SIGNATURE-----
Received on Friday, 18 November 2011 03:47:58 UTC