I don't think doing the implementation would really be that hard. There would need to be a refreshMetaSemantics.php maintenance script, and some hooks going into creating and saving pages and maybe some other tasks like viewing. It should probably only keep metadata on pages set to have evaluated annotations as defined in $smwgNamespacesWithSemanticLinks. If implemented in the core, there should be a global settings option so keeping this information can be turned on or off. But I could just as easily see this as a SMW extension, and it might be better that way.
Either the special properties would need to be somewhat specific to keep from clashing (page last modified on, page created on, page edited by, number of page views, number of page edits), or users should be allowed to specify what the property namespaces should be. Users should also be allowed to customize what metadata gets saved, because if they don't care about storing how many times a page is viewed, they won't want the extra database hit to update that semantic bit of data every time a page is viewed. I think have a pretty clear idea of how it could be done, unfortunately I probably wouldn't be able to do an implementation until late December. So if nobody else does one by then, feel free hit me up and remind me, because it's actually something I kind of want for myself. Lately I've been thinking of other possible automatically added semantic data, too, like a user ratings system extension that works with SMW. --Audra On Nov 29, 2007, at 8:08 AM, Denny Vrandečić wrote: > Any idea how to add page and wiki-meta data to SMW? The problem is, by > simply adding further special properties (last modified date, creation > date, etc.) it seems to clutter the property namespace... Well, doing > the implementation is not trivial either, but heck :) > > Cheers, > denny > > > Sergey Chernyshev wrote: >> I use DPL for techpresentations.org <http://techpresentations.org> >> but >> only because it has access to page meta-data (in my case page >> creation >> dates). I wasn't impressed with DPL's approach and prefer SMW >> approach >> which is about semantic data storage. >> >> Sergey >> >> >> On Nov 28, 2007 10:52 AM, Jim Wilson <[EMAIL PROTECTED] >> <mailto:[EMAIL PROTECTED]>> wrote: >> >> Of course, I am THRILLED that this is coming down the pipe. >> >> Sergey, If you're planning to do something crazy, I suggest >> checking >> out DPL and <shamelessplug>RegExParserFunctions</shamelessplug>. >> Combining {{#ask}} with {{#dpl}} and {{#regex}} can produce >> some very >> neat combinations. Also, I'm interested to see what you come >> up with >> in the way of {{#ask}} queries. >> >> -- Jim >> >> On Nov 27, 2007 5:04 PM, Sergey Chernyshev >> <[EMAIL PROTECTED] >> <mailto:[EMAIL PROTECTED]>> wrote: >>> Perfect - it works great for what I was planning to use it for! >> Now almost >>> no barriers are there ;) >>> >>> Sergey >>> >>> >>> >>> >>> On Nov 27, 2007 4:43 PM, Markus Krötzsch < >> [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > >> wrote: >>>> >>>> On Dienstag, 27. November 2007, Sergey Chernyshev wrote: >>>>> WOW! Markus, this is great present for being back from >> vacation! ;) I'll >>>>> test it on my instances as soon as I'll get some time with >> computer >>>>> tomorrow. >>>> >>>> Great, hope you like it. Surprisingly, most of the work had to >> go into >>>> modifying Special:Ask to allow linking to queries using >> internal links, >>> and >>>> into supporting the new separation of printout requests and >> queries (which >>>> also makes way for some more "presents"). I had to adopt the >> Special:ask >>>> interface a little to account for this. I will drop another >> short note >>> about >>>> recent changes and then be offline for a few days. I guess RC3 >> would be in >>>> order after this. >>>> >>>> Markus >>>> >>>> >>>> >>>> >>>> >>>>> >>>>> Sergey >>>>> >>>>> On Nov 23, 2007 4:01 PM, Markus Krötzsch >> <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> >>> wrote: >>>>>> And another note: {{#ask}} is in SVN (in a first version). >>>>>> >>>>>> Working example query: >>>>>> >>>>>> {{#ask: [[Category:Country]] [[borders::Nigeria]] | >>>>>> ?population| >>>>>> ?area#km² = ''Size''| >>>>>> format=list| >>>>>> limit = 3| >>>>>> link=all| >>>>>> intro=<b>Test</b>_| >>>>>> }} >>>>>> >>>>>> Moreover, it is now of course possible to use templates and >> their >>> params >>>>>> rather freely in {{#ask}}. Actually even some very >> unreasonable things >>>>>> work, >>>>>> but many cool things should also be possible. One real >> issue might be >>>>>> that uninitiated users might nest {{#ask}} in order to emulate >>>>>> <q>-subqueries, even though the latter are much more >> efficient and >>>>>> complete. Of course nesting sometimes is desirable: >>>>>> >>>>>> {{#ask: >>>>>> [[Category:Country]] >>>>>> [[population::>{{#ask:headers=hide|?Population|[[Uganda]]}} >> ]] | >>>>>> sort=population| >>>>>> ?population >>>>>> }} >>>>>> >>>>>> This indeed works now. >>>>>> >>>>>> Here is what should hopefully work for #ask on SVN: >>>>>> >>>>>> * all printout formats other than "debug" (which still >> gives some >>> HTML), >>>>>> * all known parameters (though some now are more flexible >> since you >>> can >>>>>> use >>>>>> wiki-markup as values), >>>>>> * printout requests with the syntax "? property#unit = label", >>>>>> * basic queries, nested queries, value ranges, wildcards, >> and yet >>>>>> * <ask> should work as it did before (I hope). >>>>>> >>>>>> Here is what certainly does not work: >>>>>> >>>>>> * links to further results don't work in wikitext (we need >> another >>>>>> URL-scheme >>>>>> for that, but "external" links may be my first fix), >>>>>> * printouts of Categories do not work via "? Category" yet, >>>>>> * disjunctions in queries obviously do not work yet, since >> "|" is >>> already >>>>>> taken in templates (Sergey suggested a solution that would >> require >>>>>> queries to >>>>>> be the last #ask-parameter, but we may even get around this by >>> providing >>>>>> an >>>>>> alternative syntax for "||"), >>>>>> * a query with limit 0 might show a broken further results >> link, >>>>>> * templated and embedded printers may pull annotations into >> the >>> article >>>>>> where >>>>>> the query is -- this needs some advanced fix as there is >> currently no >>> way >>>>>> for >>>>>> us to distinguish #ask-printed results from the text >> someone entered >>>>>> directly. >>>>>> >>>>>> I guess there are more things, but at least most of the >> above should >>> be >>>>>> fixed >>>>>> soon. Feel free to try out the devel version (otherwise >> it's pretty >>> much >>>>>> RC2, >>>>>> no updates needed) and let me know what breaks/works/is >> still missing. >>>>>> >>>>>> Cheers, >>>>>> >>>>>> Markus >>>>>> >>>>>> -- >>>>>> Markus Krötzsch >>>>>> Institut AIFB, Universät Karlsruhe (TH), 76128 Karlsruhe >>>>>> phone +49 (0)721 608 7362 fax +49 (0)721 608 5998 >>>>>> [EMAIL PROTECTED] >> <mailto:[EMAIL PROTECTED]> www http://korrekt.org >>>> >>>> >>>> >>>> -- >>>> >>>> >>>> >>>> Markus Krötzsch >>>> Institut AIFB, Universät Karlsruhe (TH), 76128 Karlsruhe >>>> phone +49 (0)721 608 7362 fax +49 (0)721 608 5998 >>>> [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> >> www http://korrekt.org >>>> >>> >>> >>> >> >> --------------------------------------------------------------------- >> ---- >> >>> SF.Net email is sponsored by: The Future of Linux Business White >> Paper >>> from Novell. From the desktop to the data center, Linux is going >>> mainstream. Let it simplify your IT future. >>> http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 >>> _______________________________________________ >>> Semediawiki-devel mailing list >>> Semediawiki-devel@lists.sourceforge.net >> <mailto:Semediawiki-devel@lists.sourceforge.net> >>> https://lists.sourceforge.net/lists/listinfo/semediawiki-devel >>> >>> >> >> >> --------------------------------------------------------------------- >> ---- >> SF.Net email is sponsored by: The Future of Linux Business >> White Paper >> from Novell. From the desktop to the data center, Linux is going >> mainstream. Let it simplify your IT future. >> http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 >> _______________________________________________ >> Semediawiki-devel mailing list >> Semediawiki-devel@lists.sourceforge.net >> <mailto:Semediawiki-devel@lists.sourceforge.net> >> https://lists.sourceforge.net/lists/listinfo/semediawiki-devel >> >> >> >> >> -- >> Sergey Chernyshev >> http://www.sergeychernyshev.com/ <http://www.sergeychernyshev.com/> >> >> >> --------------------------------------------------------------------- >> --- >> >> --------------------------------------------------------------------- >> ---- >> SF.Net email is sponsored by: The Future of Linux Business White >> Paper >> from Novell. From the desktop to the data center, Linux is going >> mainstream. Let it simplify your IT future. >> http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 >> >> >> --------------------------------------------------------------------- >> --- >> >> _______________________________________________ >> Semediawiki-devel mailing list >> Semediawiki-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/semediawiki-devel > > ---------------------------------------------------------------------- > --- > SF.Net email is sponsored by: The Future of Linux Business White Paper > from Novell. From the desktop to the data center, Linux is going > mainstream. Let it simplify your IT future. > http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 > _______________________________________________ > Semediawiki-devel mailing list > Semediawiki-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/semediawiki-devel ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ Semediawiki-devel mailing list Semediawiki-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/semediawiki-devel
