Hi Catrina,
no there is currently no clean mechanism to perform constraint
checking in SPARQLMotion. I will add this to the feature requests list.
However, if your constraint checks are of the CONSTRUCT form (i.e.
constructing spin:ConstraintViolations), then you can use
sml:ApplyTopSPIN if you declare
spin:constraint rdfs:subPropertyOf spin:rule .
Holger
On Sep 3, 2009, at 9:12 AM, Catrina wrote:
>
> I have a class that has a spin:constraint defined and I'd like to have
> this constraint checked from within a SPARQLMotion script. Note that
> my SPARQLMotion script and my class definition reside in two separate
> files.
>
> An instance of class is created with an ApplyConstruct module within
> my script. Is there a way to verify that none of the class's
> spin:constraints were violated?
>
> My class defintion and spin:constraint look similar to the
> kennedy:Person example on the following web page (see the first
> screenshot under Constraint Checking subtitle with the age value
> constraint):
> http://topquadrant.com/products/SPIN.html
>
> As I mentioned my script creates an instance of my class with an
> ApplyConstruct module. Then, I thought I could use an ApplyTopSPIN
> module to perform constraint checking. So I created an ApplyTopSPIN
> module and added spin:constraint to the sml:predicate of this module.
> Then, I send my constructed triples to this ApplyTopSPIN module.
>
> When I execute my script, I do not see any messages stating a
> spin:constraint violation occurred. The error log contains a message
> stating "TopSPIN took 0 ms for 0 queries". So it doesn't appear that
> the check was even made.
>
> Should I be able to use ApplyTopSPIN for such usage? Are there any
> other suggestions on how to perform constraint checking from within a
> SPARQLMotion script?
>
> Do I need to import spinowl.owl or spinrdfs.owl?
>
> Thanks,
> Catrina
> >
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