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From Reto Bachmann-Gmür <r...@apache.org>
Subject Re: SchemaGen: How to use with "path based" ontologies
Date Tue, 18 Oct 2011 12:00:50 GMT
What about creating a static inner class per path section?

Cheers,
Reto
On Oct 18, 2011 9:46 AM, "Daniel Spicar" <daniel.spicar@trialox.org> wrote:

> Hi clerezza people,
>
> I ran into an issue with SchemaGen. I tried to create a Java class
> representing the Calais Ontology (
>
> http://www.opencalais.com/files/OpenCalaisLinkedDataSchema_R4_Jan09.rdfs_.txt
> ).
> The problem is, that the Ontology uses paths instead of fragment
> identifiers
> to identify and classify different "types", "entities", etc.
>
> e.g.:
> http://s.opencalais.com/1/type/em/e/Anniversary
> http://s.opencalais.com/1/type/er/Company
> http://s.opencalais.com/1/type/er/Geo/City
>
> Now SchemaGen needs me to declare the Ontology like this:
> <owl:Ontology rdf:about="http://s.opencalais.com/1/" />
>
> But this won't work, because SchemaGen fails to generate java constants
> from
> paths, e.g. it won't be able to create a constant from
> type/em/e/Anniversary.
> Therefore I need to declare the ontology for each different subpath like
> this:
> <owl:Ontology rdf:about="http://s.opencalais.com/1/type/em/e/" />
> <owl:Ontology rdf:about="http://s.opencalais.com/1/type/er/" />
> <owl:Ontology rdf:about="http://s.opencalais.com/1/type/er/Geo/" />
>
> And I need to do this in 3 different files.
>
> This is pretty annoying. Is there any way to circumvent this?
>
> If not, what would be a clever way to avoid this problem? I assume the
> problem stems from SchemaGen trying to create Java Constants with slashes
> in
> their names which I assume is illegal. We could do a simple solution of
> using some other character in this case (e.g. "_"). But does anyone have an
> idea how to solve this issue in a nicer way?
>
> Daniel
>

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