FYI, I have a working version of an ARC2 RDF Store connector now, which gives access to ARC2 [0] functionality such as possibility to set up a SPARQL endpoint etc (will work on that in the following ...).

Feel free to try it out and comment!

Code [1] and install instructions [2] available on Google code for the time being.

The connector is heavily based upon the Joseki store connector in the SparqlExtension [3], by
Alfredas Chmieliauskas (Thanks Alfredas! :) ).

(Se blog post [4] also)

// Samuel

[0] http://arc.semsol.org/
[1] http://code.google.com/p/smw-rdf-connector/source/browse/#svn/trunk
[2] http://code.google.com/p/smw-rdf-connector/wiki/ARC2StoreInstall
[3] http://www.mediawiki.org/wiki/Extension:SparqlExtension
[4] http://saml.rilspace.org/working-arc2-rdf-store-connector-committed

--
Samuel Lampa
Biotech student @ Uppsala Univerisity
GSoC 2010 student @ Semantic MediaWiki
Project blog: http://saml.rilspace.org
Twitter: http://twitter.com/samuellampa