Very intriguing. Are you planning to have support for some kind of display name, through a property defined on the Property page maybe ?
It would be nice to have a way to hide the reverse notation with a meaningful string sometimes. - Laurent Alquier Http://www.Alquier.org On Aug 26, 2009, at 5:36 PM, Markus Krötzsch <mar...@semantic-mediawiki.or g> wrote: > On Mittwoch, 26. August 2009, Jon Lang wrote: >> Markus Krötzsch wrote: >>> If applicable, inverse properties generally are linked to the page >>> of the >>> corresponding property (so "-developer of" links to >>> "Property:developer >>> of"). It is strongly suggested not to create property pages that are >>> called like inverse properties (it won't destroy anything, but it >>> might >>> create unnecessary confusion). >> >> Could you give an example of this, please? In particular, what are >> you meaning by "are linked to"? > > Sorry, I was not very clear here: Sometimes property names are > displayed > somewhere, for example in the header of tables created by #ask. Such > texts are > often linked to the property's page. In case of inverses, links will > go to > non-inverse property pages. > >> >>> Also, you cannot use inverse properties to enter semantic data >>> into the wiki: all annotations must be on the page that is the >>> subject of >>> the non-inverted property. >> >> So inverse properties are like the "what pages link here?" Wiki >> feature? > > Very roughly, yes. > >> >>> Inverses in queries are currently only supported if they are of >>> Type:Page. >> >> That makes sense. >> >>> == Development Information == >>> >>> The main changes that I expect to be required in SMW extensions is >>> in >>> places where you deal with property subjects and silently expect >>> them to >>> be of Type:Page. If users can enter inverse properties, then a >>> query for >>> a subject can also return datavalues of other datatypes, so you >>> need to >>> use the generic datavalue API, or check the type of the datavalue >>> first. >> >> Could you give an example of such a query, for illustrative purposes? > > What query do you mean? You mean the actual source code that uses > inverse > properties? It is not different from code using non-inverse > properties, > really. > >> >>> I hope that SMW already works properly in all cases where inverses >>> can >>> occur. Feedback is welcome. >> >> This is a welcome step forward. The other feature that I'm hoping to >> see relatively soon are transitory properties. > > This is much harder (I think you mean "transitive" here). > Maybe not so soon ... > > -- Markus > > > > -- > Markus Krötzsch <mar...@semantic-mediawiki.org> > * Personal page: http://korrekt.org > * Semantic MediaWiki: http://semantic-mediawiki.org > * Semantic Web textbook: http://semantic-web-book.org > -- > > --- > --- > --- > --------------------------------------------------------------------- > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 > 30-Day > trial. Simplify your report design, integration and deployment - and > focus on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ > Semediawiki-devel mailing list > Semediawiki-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/semediawiki-devel ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Semediawiki-devel mailing list Semediawiki-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/semediawiki-devel
