Harold Solbrig wrote:
> The “provides service” feature, in combination with a URL gives us a lot
> of power when it comes to referencing external resources. This allows
> us to change the nature of properties as the Wiki evolves. We can, for
> example, begin with a free text (or enumerated) list of country codes
> and, as some later date, change the “inCountry” property to be a URL
> with code substituted in the appropriate place. Something that would be
> really useful would be the ability to change the type to “Page” and,
> using a similar substitution mechanism, say something like
> “[[Country_$1]]”. Other use cases may include assigning a namespace as
> well, such as “[[:Category:Country_$1]]” or a in interwiki reference –
> “[[mw:Country_$1]]”. While we can simulate this with the URL
> mechanism, we lose all the advantages of the Semantic portion, as the
> referenced entity isn’t aware that we are pointing at it.
I'm not quite sure what you're looking for. You want to change
inCountry from Type:String to be (in SMW 1.0pre-alpha3) Type:Page, i.e.
turn it into a relation, but you want to use “provides service” to turn
the link into [[Country_$1]]?
I'm not familiar with the provides service code, but I suspect it runs
in the factbox after the semantic markup has been parsed, so that it
can't easily inject new semantic properties into the page.
The way people typically make link rewriting permanently is to run a
batch script on the Wiki.
The way people typically make link rewriting continuously is to use a
template. For example, you write
the developers come from {{inCountry|Germany}}
and the template produces
the developers come from
[[inCountry::Country_Germany|Germany]] [[Category:Country_Germany]]
If you later change what Template:inCountry does, you can just purge the
wiki pages, using a maintenance script.
But I think I'm missing something, again. A demo page is worth 500
words. Can you make a Category:Testpage on ontoworld.org that shows how
you're using service links with URLs and what you want to achieve with
page links?
> If other folks thought that this was a reasonable idea, we would be
> happy to roll up our sleeves and attempt to “make it so”, but we don’t
> want to spend a lot of time on a feature that won’t make it into the
> main development thread.
File an enhancement bug, supply code that addresses the bug, and maybe
someone with SVN rights will pick it up and check it in. Even if not,
you can keep a local copy with your changes and regularly update it to
latest SVN and if there are no conflicts it's not too hard to maintain.
Regards,
--
=S Page
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