One week off to work on RDFIO

From today evening, I'm taking one week off from work to make a sprint to try to finalize the RDFIO extension, for RDF import and export in Semantic MediaWiki.

This will be a required step for finalizing the vision described in my SMWCon fall 2011 talk, the other month.

I developed RDFIO as part of Google Summer of Code 2010, and it got into a working proof-of-concept state. Some issues, such as with performance, never were resolved though. Also it depended upon two other modules, which, after Semantic MediaWiki changed a lot of it's internals in version 1.6, have still not been updated to support these, leaving RDFIO in a state where it does not support SMW 1.6.

So, a little sprint is definitely needed, to get RDFIO in working condition again. At the same time I hope to look at it with fresh eyes, after having a lot more coding experience now, than when I coded RDFIO, after one year of quite some Java and Python development in my work at UPPMAX.

Things I plan to have a look at (or at least ponder):

  • Look at possiblity to use the Wiki Object Model instead of the Page Object Model / SMWWriter combo (which unfortunately is not SMW 1.6 compliant anymore)
  • See if/how I can make more use of the new infrastructure in SMW, summarized by Markus in this post in SMW devel mailinglist.
  • Take an overall fresh look at the architecture of the code ... try to follow Domain Driven Design principles much better, to get clean maintaineable code.
  • Use existing MediaWiki feature uch more, such as the HTMLForm form builder class (for Specialpages and the like).
    (More suggestions like this highly welcome!)
  • Import ARC2 library via the ARCLibrary extension rather than with a separate import.
  • Use the existing "Equivalent URI" special property, instead of the custom "Original URI" (don't remember why I created a custom one...)
  • Run big imports as jobs?
  • OWL class import (as categories) ?
  • Allow updating Wiki articles from any connected store, by using the new SMW Internals?
  • Other things?

I would love to get some feedback and input to the project during this intensive week, so don't hesitate to drop in at #semantic-mediawiki on (IRC chat) or in the SMW-devel mailing list! My contact options, summarized:

Looking forward to your input during this week!


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That is so nice to hear, good luck Samuel! Do you apply bugreports too? I remember I had problems in running RDFIO. 

Yes, bugs should be fixed :)

Yes, bugs should be fixed :) ... but I'm thinking of doing such a big re-write, that probably most of the bugs will go away automatically :) (at least a lot, which comes from a fragile dependencies which I now plan to ditch) ... then I'll probably create some more bugs as well, so please report any of them later on ...