[redland-dev] ANNOUNCEMENT: Rasqal RDF Query Library 0.9.20
dave at dajobe.org
Sun Aug 22 19:05:24 CEST 2010
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Rasqal RDF Query Library 0.9.20
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 Query 1.1, Update 1.1 Syntax and
Experimental SPARQL extensions (LAQRS)
and can write binding query results in the following formats:
SPARQL XML, SPARQL JSON, CSV, TSV, HTML and ASCII tables.
Rasqal is designed to work closely with the Redland RDF library
and the Raptor RDF Syntax 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 2010-02-15 are:
* Updated to handle more of the new syntax defined by the SPARQL 1.1
Query and SPARQL 1.1 Update W3C working drafts of 1 June 2010
* Added execution support for new SPARQL 1.1 query built-in expressions
IF, URI, STRLANG, STRDT, BNODE, IN and NOT IN.
* Added an 'html' query result table format from patch written
by Nicholas J Humfrey
* Added API support for group by HAVING expressions
* Added XSD Date comparison support
* Support building with Raptor V2 API if configured with --with-raptor2.
* Fixed Issues: #0000352, #0000353, #0000354, #0000360,
#0000374, #0000377 and #0000378
For full details see the Rasqal 0.9.20 release notes at
Rasqal 0.9.20 requires Raptor 1.4.19 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/
 Redland RDF library,
 Raptor RDF Syntax Library,
 SPARQL 1.1 Query W3C Working Draft of 2010-06-01
 SPARQL 1.1 Update W3C Working Draft of 2010-06-01
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