Hi Markus,
It's not quite true that SMW "only stores data that is actually found on a
page" - there's also metadata that it can store, like the current
"Modification date" special property. I guessed, when I read Mauricio's
email, that that's what he was talking about, though I could be wrong.
-Yaron
On Tue, Sep 6, 2011 at 9:49 AM, Markus Krötzsch <
mar...@semantic-mediawiki.org> wrote:
> On 05/09/11 15:34, Mauricio Etchevest wrote:
> > Hi,
> >
> > I'm working on an new extension for SMW.
>
> Great.
>
> >
> > There're two things that don't work out:
> >
> > My extension has to generate new semantic annotations without any user
> > input,
> > Anybody could tell me how to start ? Any recommendations on what to
> > read or which classes are important to do that?
>
> You might want to look at the SMWWriter extension for SMW that addresses
> part of this task. However, SMW is not a general purpose store for
> annotations and it only stores data that is actually found on a page (in
> wikitext). So adding annotations can only be done by writing the wiki text.
>
> >
> > Anyone could tell my where to find a list of all semantic annotations
> > that users can use ? I have the feeling that I'm missing something here,
> > It seems yo me that there might be more semantic annotations than the
> > ones that appear in the user manual.
>
> Users can use any annotation they like. With this I mean: they can use
> properties with arbitrary names and they can assign arbitrary values to
> these properties for every page. The only restriction is that the value
> must make sense in the datatype of the property (for example, a property
> of type Number can only have values that are numbers).
>
> There are also a few special annotations that SMW looks for to figure
> out certain user settings. For example, the datatype of a property is
> set as a value for the property "has type" as in [[has type::Number]].
> These special things are what is documented in the user manual. All
> other annotations do not have a special meaning for SMW (they are "just"
> data).
>
> Regards
>
> Markus
>
> >
> >
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