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[ANN] SeRQL RDF query language rev 1.2 / Sesame 1.2 RC1

From: Jeen Broekstra <jeen@aduna.biz>
Date: Wed, 11 May 2005 15:31:13 +0200
Message-ID: <42820921.6030202@aduna.biz>
To: semantic web <semantic-web@w3.org>

The first release candidate of Sesame 1.2 is now available for download:

   http://www.openrdf.org/download.jsp

The most important new feature of this release is SeRQL revision 1.2:

   http://www.openrdf.org/doc/SeRQLmanual.html

SeRQL 1.2 offers an impressive set of new operations and functional 
extensions, including:

     * Nested queries
     * Existential quantification
     * Set algebraic operators (union, difference, intersection)
     * namespace(), localName() functions
     * isBNode(), isURI() functions
     * Nested boolean constraints in optional path expressions

Other updates in Sesame: It is now possible to register an object as a 
listener on a repository, which will then notify it of content 
changes. Also, the RDQL engine has been updated to work with the 
generic SAIL query model, significantly improving performance of the 
RDQL query engine.

Several other large and small issues and new features are also 
available in this release. For a full overview of changes see the 
Changelog:

http://www.openrdf.org/issues/browse/SES?report=com.atlassian.jira.plugin.system.project:changelog-panel

Regards,

Jeen
-- 
Jeen Broekstra          Aduna BV
Knowledge Engineer      Julianaplein 14b, 3817 CS Amersfoort
http://aduna.biz        The Netherlands
tel. +31 33 46599877
Received on Wednesday, 11 May 2005 13:29:05 UTC

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