On Mittwoch, 27. August 2008, Matt Williamson wrote: > Markus, > > Thanks for this! Maybe we'll get Semantic Layers in there one of these > days.
I did not see you in MediaWiki SVN. Are your files somewhere else? Otherwise I
see no issues (unless your classes start with "SMW" or so ;-).
>
> Speaking of which, a quick question...I'm trying to make a query with
> the API to select all pages that have some value for a property (that
> have the property defined), and how to do it isn't jumping out at me.
> I've seen SMWStore::getAllPropertySubjects(), but I need to do it with
> the regular query methods, because I'm adding it to a disjunction with
> another criteria (trying to get all pages either in the Layer
> namespace or that have the Layer Class property defined).
>
> For example this is what I've tried most recently...
>
> $descLayerNS = new SMWNamespaceDescription(SL_NS_LAYER);
>
> $ttlLayerClass = Title::makeTitle(SMW_NS_PROPERTY,
> wfMsg('sl_property_layerclass'));
> $descLayerClass = new SMWSomeProperty($ttlLayerClass, new
> SMWValueDescription(SMWDataValueFactory::newTypeIDValue('_wpg', '+')));
"+" is just the syntax. What you need there internally is just an
SMWThingDescription (which just describes "anything"). So you use:
$descLayerClass = new SMWSomeProperty($ttlLayerClass, new
SMWThingDescription());
I see now that the documentation in the respective file is not quite
up-to-date, still speaking of "attributes". Maybe we could also simplify the
API in some places (such as simply making the subdescription optional for
SMWSomeProperty).
Regards,
Markus
>
> $descLayers = new SMWDisjunction(array($descLayerNS,
> $descLayerClass));
>
> ...even though I figured that wouldn't work, but I've tried some other
> more intelligent things before and couldn't get them to work
> either :-). Probably something simple...can you help me here?
>
> Thanks!
>
> -Matt
>
> On Aug 27, 2008, at 9:38 AM, Markus Krötzsch wrote:
> > Hi,
> >
> > SMW now provides an online API documentation to support developers:
> >
> > http://semantic-mediawiki.org/doc/
> >
> > The documentation encompasses SMW, Semantic Forms, Semantic Drilldown,
> > Semantic Calendar, and Semantic Google maps. It is rebuild every day
> > from the
> > current contents of SVN.
> >
> > Further SMW extensions can be added to this collection, provided
> > that they use
> > a suitable naming scheme for their identifiers (the above extensions
> > use
> > prefixes SMW, SF, SD, SC, SGM throughout their code). Of course, we
> > should
> > also consider improving the documentation e.g. by adding (or
> > cleaning up)
> > module information to distinguish extensions.
> >
> > Cheers,
> >
> > Markus
> >
> >
> > --
> > Markus Krötzsch
> > Semantic MediaWiki http://semantic-mediawiki.org
> > http://korrekt.org [EMAIL PROTECTED]
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--
Markus Krötzsch
Semantic MediaWiki http://semantic-mediawiki.org
http://korrekt.org [EMAIL PROTECTED]
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