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ANNOUNCEMENT: Rasqal RDF Query Library Toolkit 0.9.0

From: Dave Beckett <dave.beckett@bristol.ac.uk>
Date: Sat, 15 May 2004 16:51:00 +0100
To: www-rdf-interest@w3.org
Message-Id: <20040515165100.11c7b2b5@hedwig.dajobe.org>

		   Rasqal RDF Query Library 0.9.0

               Supported by EU IST project SWAD-Europe

Rasqal is a free software/Open Source C library that handles RDF
query syntaxes, query construction and query execution returning
result bindings.  It currently handles RDF Data Query Language
(RDQL).  Rasqal was designed to work closely with the Redland[1] RDF
library but is entirely separate.

This is the first public release of Rasqal which has been under
development since mid-2003.  This version is beta quality: stable but
the API may be modified or extended.  Rasqal is a portable library
and has been tested on multiple POSIX systems and a variety
architectures (x86, IA64, powerpc, alpha, sparc).  It has no known
memory leaks and is suitable for embedding in long running

Summary of main features:

  * An RDF query construction and access API.
  * A query execution engine including constraint expression evaluation.
  * A query result binding API.
  * Query language support for RDQL.
  * Triple store querying APIs to support querying over external RDF graphs.
  * No memory leaks.
  * roqet standalone RDF query utility program

Raptor 0.9.0 depends on Raptor 1.3.0+[2] or Redland[1] to provide a
triple store source, and also a POSIX regular expression library such
as PCRE.  It was tested as working out-of-the-box (configure; make;
make check) against Raptor 1.3.0 with the following systems:
    alphaev67-unknown-linux-gnu - Debian GNU/Linux on Alpha
    i386-unknown-freebsd4.10    - FreeBSD 4.10 (pre-release) on x86
    i686-pc-linux-gnu           - Debian GNU/Linux unstable on x86
    i686-pc-linux-gnu           - Redhat GNU/Linux Fedora Core 2 test3 on x86
    powerpc-apple-darwin5.5     - Apple OSX 10.2.X on PowerPC
    powerpc-apple-darwin7.3.0   - Apple OSX 10.3.3 on PowerPC
    sparc-sun-solaris2.9        - Sun Solaris 9 on Sparc
    x86_64-unknown-linux-gnu    - Debian GNU/Linux on AMD x86

The release consists of the full sources, RPM binaries and source RPM
packages for RedHat Linux 9 (Future RPMs will be for RedHat Fedora).
These are also available from the Redland SourceForge mirror site at
Debian packages shoulde be made available shortly.

The main web site lets you browse and check out the latest version of
the sources in CVS.

I post updates about Rasqal, Redland and Raptor to the redland-dev list
which is one of the lists you can join from the list page at


[1] http://www.redland.opensource.ac.uk/
[2] http://www.redland.opensource.ac.uk/raptor/
Received on Saturday, 15 May 2004 11:52:23 UTC

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