I've now created a test site for a semantic MediaWiki that lets you put the triple (x,R,y) anywhere, not just on page x:
http://semarbtri.kgprog.com/wiki/index.php/Main_Page
The code is available:
http://semarbtri.kgprog.com/SemArbTri.txt
The syntax for a triple is "[[x::R::y]]" (or just "[[R::y]]" if you're already on page x).
Broken things I'd like help with:
% When editing an existing page, all the semantic info vanishes. Compare:
http://semarbtri.kgprog.com/wiki/index.php/The_Light_Fantastic http://semarbtri.kgprog.com/wiki/index.php?title=The_Light_Fantastic&act...
The first page has semantic info, the second doesn't. My extension does have a "in edit mode, don't display semantic data" comment + some supporting code, but commenting out this code doesn't help.
% When editing a new page, semantic info is visible, but unformatted:
http://semarbtri.kgprog.com/wiki/index.php?title=Wizard&action=edit
% If I try to protect against spammers by adding this to LocalSettings.php:
$wgGroupPermissions['*']['edit'] = false;
the semantic info disappears when you're viewing new (non-existent) pages. I've commented this setting out for now (so I can't give an example page of where this happens), but I'd like to get this fixed.
% Minor: my code breaks the "nowiki" tag (so the main page says "((x::R::y))" instead of "[[x::R::y]]" when giving an example)
% Minor: weird empty semantic triple at the bottom of some pages:
http://semarbtri.kgprog.com/wiki/index.php/Troll
(am I doing the MySQL SELECT wrong?)
% These are the "big" errors. There are many smaller errors + lots of features I want to add.
Any volunteers? No CVS or anything yet (the sf.net page is not up-to-date), but please send suggestions/code improvements.