Re: [Semediawiki-user] Nesting of Semantic Annotations

[Yaron K. <ya...@gm...>]

Unfortunately, you can't do that - you can't query on two types of object at
the same time, in this case authors and publications. I think the best
solution here is to split it up into multiple queries, one for each
publication type; so for journals, you would have something like:

'''Papers in journals:'''

{{#ask: [[Has_Publication.Has_PublicationType::Journal]]
| ?Author
| ?University
| ?Has_Publication
| format=table
| mainlabel=-
|}}

Note the new(-ish) format for sub-queries, which uses a "." instead of the
old "<q>" tag.

-Yaron


On Fri, Nov 13, 2009 at 8:14 PM, Beebe, Mary J <Be...@ba...> wrote:

> This is great.  By looking at the database this is exactly what we were
> looking for but now the query is giving me trouble.  Sorry if this is easy I
> have to been trying all kinds of different things.  Here is what I have.
>
> On the publication page I have:
>
> [[Has_PublicationType::Journal]]
>
> {{#set_internal: Has_Publication | Author = Mary | University = Ohio State
> }}
> {{#set_internal: Has_Publication | Author = John | University = USC }}
> {{#set_internal: Has_Publication | Author = Jane | University = Ohio State
> }}
>
>
> That created a virtual page for each line, with properties Has_Publication,
> Author, University.
>
> My ask statement is:
>
> {{#ask: [[Author::+]]
> [[Has_Publication::<q>[[Has_PublicationType::+]]</q>]]
> | ?Author
> | ?University
> | ?Has_Publication
> | ?Has_PublicationType
> | format=table
> | mainlabel=-
> |}}
>
> The problem seems to be that cannot figure out how to get information from
> 2 pages that are linked together to show up on one row.
>
> Similar to select table1.field1, table2.field2 from table1, table2 where
> table1.id = table2.id in sql query.
>
> Mary Beebe
>
>
> -----Original Message-----
> From: Dan Bolser [mailto:dan...@gm...]
> Sent: Friday, November 13, 2009 3:59 AM
> To: Beebe, Mary J
> Cc: Sem...@li...
> Subject: Re: [Semediawiki-user] Nesting of Semantic Annotations
>
> 2009/11/12 Beebe, Mary J <Be...@ba...>:
> > It seems to me that Semantic wiki annotations are dependent on individual
> pages.
> >
> > However, we want to create something like this:
> >
> > One page about  a Journal, which was written by 3 authors.
> >
> > [[Has_Author::Mary]]   goes to [[University::Ohio State]]
> > [[Has_Author::John]] goes to [[University::USC]]
> > [[Has_Author::Jane]] goes to [[University::Ohio State]]
> >
> > Because of the paragraph that I found below, we do not think it is
> possible to link the author to the university and the journal without
> creating a separate page for the author; however, it is impossible to create
> a separate page for each author for various reasons.
>
> Hi Mary,
>
> Your analysis is right, however there are a number of solutions.
>
> In addition to many-valued properties suggested by Gu, have a look at
> the Semantic Internal Objects (SIO) extension:
>
> http://www.mediawiki.org/wiki/Extension:Semantic_Internal_Objects
>
>
> {{#set_internal: Has_Author | Name = Mary | University = Ohio State }}
> {{#set_internal: Has_Author | Name = John | University = USC }}
> {{#set_internal: Has_Author | Name = Jane | University = Ohio State }}
>
>
> This creates 'page-like' objects that correctly associate 'Names' with
> 'Universities' and 'Has authors' with the calling page.
>
> Dan.
>
>
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