[redland-dev] ANNOUNCEMENT: Rasqal RDF Query Library 0.9.32
Dave Beckett
dave at dajobe.org
Sun Feb 23 11:44:46 EST 2014
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Rasqal RDF Query Library 0.9.32
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[3]
SPARQL Query 1.1[4], SPARQL Update 1.1[5] (no executing) 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, SPARQL CSV, TSV, RDF/XML and Turtle / N3.
Rasqal was designed to work closely with the Redland librdf[1] RDF
library and the Raptor[2] RDF Syntax Library but is entirely separate
from both.
This is a beta quality library - the code is mature, the API is
mostly stable but changing slowly. Rasqal supports all of SPARQL 1.0
query and most of SPARQL 1.1 query. 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 2013-12-13 are:
* SPARQL parser now uses and requires Bison 3.0 (for maintainer)
* Fixed SPARQL 1.0 vs SPARQL 1.1 syntax feature checking
* Make ossp work as a UUID library option.
* Fixed configure searching for libgcrypt-config and pcre-config.
* Made --with-libgcrypt-config and --with-pcre-config work again.
* Made other fixes and improvements including fixing reported issues:
0000558, 0000560, 0000561, 0000564 and 0000567.
For full details see the Rasqal 0.9.32 release notes at
http://librdf.org/rasqal/RELEASE.html#rel0_9_32
rasqal-0.9.32.tar.gz
SHA256 eeba03218e3b7dfa033934d523a1a64671a9a0f64eadc38a01e4b43367be2e8f
MD5 dc7c6107de00c47f85f6ab7db164a136
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 0.9.32 requires Raptor 2.0.7[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; a multi-precision
decimal library such as GNU MP or MPFR for handling XSD decimals;
a UUID library for generating unique IDs.
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 Query W3C Recommendation 2008-01-15
http://www.w3.org/TR/2008/REC-rdf-sparql-query-20080115/
[3] SPARQL 1.1 Query W3C Recommendation of 2013-03-21
http://www.w3.org/TR/2013/REC-sparql11-query-20130321/
[4] SPARQL 1.1 Update W3C Recommendation of 2012-03-21
http://www.w3.org/TR/2013/REC-sparql11-update-20130321/
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