Hi Jeff,
did you call this at init time:
// Initialize system functions and templates
SPINModuleRegistry.get().init();
This will load the spl namespace and the functions defined therein,
including the system functions such as sp:mul so that the SPIN engine
knows that they are abbreviated (e.g. using *).
Holger
On Mar 26, 2009, at 1:28 PM, Schmitz, Jeffrey A wrote:
>
> Hello,
> I finally got a chance to look through the new SPIN API, and started
> with trying to run the SPIN rules on the spinsquare ontology. I think
> I'm pretty close, except it's choking on the line in the spin:rule
> construct query that uses the multiplication symbol, i.e.
>
> LET (?area := (?width * ?height)) .
>
> Stepping through the code, I can see that this gets turned into what I
> would guess must be a property function named sp:mul:
>
> LET (?area := sp:mul(?width, ?height))
>
> However, I don't think my execution environment has access to that
> function and thus the query doesn't return anything. Is there any
> way I
> could get this function and make it available to my execution
> environment, and is that documented anywhere? Or is that not part of
> the release?
>
> Thanks!
> Jeff
>
> -----Original Message-----
> From: Holger Knublauch [mailto:[email protected]]
> Sent: Saturday, March 07, 2009 12:38 PM
> To: [email protected]
> Subject: [tbc-users] SPIN API is now open source
>
>
> Dear users,
>
> we have had several requests from people who would like to integrate
> SPIN functionality (SPARQL-based constraint checking, inferencing,
> user-defined functions) into their own applications. In order to
> encourage the wider adoption of SPIN in the community, we have
> therefore
> decided to make the key features of our SPIN implementation open
> source:
>
> http://www.topquadrant.com/topbraid/spin/api/
> The SPIN API is built on Jena and provides the following features:
>
> * Converters between textual SPARQL syntax and the SPIN RDF
> Vocabulary
> * A SPIN-based constraint checking engine (via spin:constraint)
> * A SPIN-based inferencing engine (via spin:rule and
> spin:constructor)
> * Support to execute user-defined SPIN functions using Jena/ARQ
> * Support to execute user-defined SPIN templates
>
> The license has been selected to allow open source projects (from
> universities etc) to use SPIN without further complications. For
> closed
> source users, we offer a commercial license that also provides
> business
> users assurance and support. With this policy we hope to encourage
> researchers to provide their (open source) implementations back to the
> community to help the SPIN community grow.
>
> The SPIN API is currently in beta, and the official 1.0 release is
> scheduled in conjunction with TopBraid 3.0 in the next few weeks. We
> appreciate your feedback in the meantime.
>
> Kinds regards,
> Holger
>
>
>
>
> >
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"TopBraid Composer Users" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/topbraid-composer-users?hl=en
-~----------~----~----~----~------~----~------~--~---
