On Freitag, 31. Juli 2009, Laurent Alquier wrote: > Thanks Markus > > I have used the API documentation a lot while digging through these > questions. > > I am already using GetStore to retrieve all properties on a page and I > am scanning each property to find the one I want. > > That doesn't seem very efficient to me and I am wondering if there is > a more direct (faster) way to retrieve values if I already know a page > and a property. > > Something like getPagePropertyValues($page,$property) if you want.
Well, as I said in my email: the function you are looking for is called getPropertyValues(). If you did not know the name of the property, then getSemanticData() is likely to be the best option. > > I was not able to find something close to that in the documentation, > so I assumed that method does not exist. But at least our name for the function is not so far from what you suggested, so I guess there is not much we could change to make this code more usable. -- Markus > > - Laurent > > On Jul 30, 2009, at 4:42 PM, Markus Krötzsch wrote: > > The direct way to access data from the store is to use the various > > functions > > of SMWStore, the current instance of which you obtain via > > smwfGetStore(); see > > the API documentation [1] for details. In your case, you would call > > getPropertyValues($subject, $property), where $property is an > > SMWPropertyValue > > object that you can create with the static methods make...() in this > > class > > (again, see API docs). $subject is just a usual SMWWikiPageValue > > object, also > > creatable using static methods of this class. > > > > I hope the API documentation is of some use to you (I find it quite > > detailed > > when compared to some other software I have seen ;-). If you find > > some docs > > unclear or insufficient, please do not hesitate to point this out to > > us. It > > might also be helpful to provide further resources for developers > > that use SMW > > code. These could be a good addition to semantic-mediawiki.org; > > contributions > > are welcome. > > > > Cheers, > > > > Markus > > > > > > [1] http://semantic-mediawiki.org/doc/ > > > > On Sonntag, 26. Juli 2009, Laurent Alquier wrote: > >> Thanks - I will give it a try during the week. > >> > >> I am trying to find a way to get the value of a page-property pair > >> without having to loop through all properties on a page only to get > >> the value of one property. > >> > >> This is to streamline my customized semantic search results. One of > >> the bottlenecks is the performance hit from accessing properties for > >> each page in the list of matches from the search. I am trying to > >> reduce that hit to the absolute minimal number of property I need > >> from > >> each page. > >> > >> I managed to reduce the performance hit to 5 to 8 seconds per > >> search... which is ok as long as it is under 10 seconds... but I > >> would > >> feel better about it if I could reduce it down to under 5 seconds per > >> search. > >> > >> - Laurent > >> > >> On Jul 25, 2009, at 10:53 PM, Yaron Koren wrote: > >>> Yes, you can use the API. If you go to Special:Ask, recreate the > >>> query and select "CSV export" as the format, then hit "Find > >>> results", you should get a URL for the CSV export you need. You then > >>> just need to have the PHP retrieve and parse that URL; you can see > >>> the getCSVData() function in the External Data extension for how to > >>> do that (though your code can probably be simpler). > >>> > >>> -Yaron > >>> > >>> > >>> On Sat, Jul 25, 2009 at 3:39 PM, Laurent Alquier > >>> <laur...@alquier.org> wrote: > >>> Actually, I thought about a way that could work, except I still have > >>> to find an example in PHP. > >>> > >>> In case someone already knows the answer, how would I go about > >>> getting the results of a #show or #ask query in PHP ? > >>> > >>> Something like : > >>> > >>> $propertyValuesArray = GetQueryResults("{{#show:Some page|?Some > >>> property}}") > >>> > >>> Is this possible with the SMW API ? > >>> > >>> - Laurent > >>> > >>> From: "Laurent Alquier" <laur...@alquier.org> > >>> Sent: Saturday, July 25, 2009 6:43 AM > >>> To: "Semantic MediaWiki Developers List" > >>> <semediawiki-devel@lists.sourceforge.net > >>> > >>> Subject: [SMW-devel] How about retrieving a single triple ? > >>> > >>> > >>> > >>> Related to a recent question about retrieving all triples on a page > >>> - is there a quick way to retrieve a single triple on a page ? > >>> > >>> More precisely - If I have a page name and a property name, is there > >>> a direct way to get the values for that pair (page, property name) > >>> without having to declare the supporting structures such as : > >>> > >>> $page = SMWDataValueFactory::newTypeIDValue( '_wpg', $title- > >>> > >>>> getFullText()); > >>> > >>> $semdata = smwfGetStore()->getSemanticData($page- > >>> > >>>> getTitle() ); > >>> > >>> - Laurent > >>> > >>> > >>> ----------------------------------------------------------------------- > >>>-- ----- > >>> > >>> _______________________________________________ > >>> Semediawiki-devel mailing list > >>> Semediawiki-devel@lists.sourceforge.net > >>> https://lists.sourceforge.net/lists/listinfo/semediawiki-devel > > > > -- > > Markus Krötzsch > > Semantic MediaWiki http://semantic-mediawiki.org > > http://korrekt.org mar...@semantic-mediawiki.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 -- Markus Krötzsch Semantic MediaWiki http://semantic-mediawiki.org http://korrekt.org mar...@semantic-mediawiki.org
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