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ANNOUNCEMENT: Rasqal RDF Query Library 0.9.18

From: Dave Beckett <dave@dajobe.org>
Date: Sun, 14 Feb 2010 15:52:00 -0800
Message-ID: <4B788CA0.702@dajobe.org>
To: 'Semantic Web' <semantic-web@w3.org>
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		   Rasqal RDF Query Library 0.9.18
		      http://librdf.org/rasqal/

Rasqal is a free software / Open Source C library that provides
querying of Resource Description Framework (RDF) with multiple query
languages syntaxes, query construction by API and execution of
queries returning results as bindings, boolean, RDF graphs/triples
or syntaxes.  It supports the following query languages:
  SPARQL 1.0, RDQL, Draft SPARQL 1.1 Syntax and
  Experimental SPARQL extensions (LAQRS)
and can write binding query results in the following formats:
  SPARQL XML, SPARQL JSON, CSV, TSV and ASCII tables.

Rasqal is designed to work closely with the Redland[1] RDF library
and the Raptor[2] RDF parsing and serializing library but is entirely
separate from both.

Rasqal is beta quality; the API is still changing.  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 2009-12-16 are:
 * Add initial draft parsing and API (NOT execution) support for
   SPARQL 1.1 Update W3C Working Draft of 2010-01-26.[3]
 * Add public APIs (row, results, result formatter, variables table)
   so that query results can be built, read and written without a
   query.
 * Add API resilience checks for invalid NULL pointer arguments.
 * Many other bug fixes and improvements were made.
 * Fixed Issues: #0000320, #0000323 #0000343, #0000345 and #0000347.

For full details see the Rasqal 0.9.18 release notes at
  http://librdf.org/rasqal/RELEASE.html#rel0_9_18

Rasqal 0.9.18 requires Raptor 1.4.18[2] or newer to provide RDF, 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 and a multi-precision decimal library such
as GNU MP or MPFR.

Binary deb packages for Debian unstable will be made available
later via the standard Debian archive.

Sources will also be available from the Redland SourceForge mirror
site at http://sourceforge.net/projects/librdf/ although the site is
such a pain to use to upload and manage files, I may stop.

The http://librdf.org/ site lets you browse and check out the latest
version of the sources in Subversion 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 RDF library,
http://librdf.org/

[2] Raptor RDF parser and serializer library,
http://librdf.org/raptor/

[3] SPARQL 1.1 Update W3C Working Draft of 2010-01-26.
http://www.w3.org/TR/2010/WD-sparql11-update-20100126/
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Received on Sunday, 14 February 2010 23:52:29 GMT

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