Hey Holger, the setup looks pretty much like this:
# base ontology @base <http://ontology/base/> . <> a owl:Ontology ; owl:imports <http://ontology/imported> . <http://localhost/resource> x:query <http://ontology/imported/SPINResource> . # imported ontology @base <http://ontology/imported/> . <> a owl:Ontology . <SPINResource> a sp:Construct ; sp:templates ( ... # full query goes here, converted with http://spinservices.org/spinrdfconverter.html The SPIN query is referenced in the base ontology, but is actually described in the imported one. Then I load the base ontology into OntModel using OntDocumentManager (import processing set to true), and do this: SPINFactory.asQuery( getOntModel().getResource("http://localhost/resource";).getPropertyResourceValue(X.query) ); I can see that OntResourceImpl of <http://ontology/imported/SPINResource> is passed here, but asQuery() returns null. Afterwards my own code is throwing an NPE because of that -- SPIN is not throwing any exception, I was incorrect in my previous email. Does this explain something? Wouldn't the solution be for SPINFactory also to accept OntResources? Just guessing. Martynas graphity.org On Tue, Mar 27, 2012 at 1:21 AM, Holger Knublauch <[email protected]> wrote: > On 3/27/2012 1:49, Martynas Jusevicius wrote: >> >> Hey all, >> >> I'm reading an ontology file into OntModel, and it includes imports >> which are processed. >> It's all fine when I'm operating on the OntModel level. However I need >> to pass a certain Resource to the SPIN API, and the statements about >> it are both in the base model and in the imported one. If I'm simply >> passing that Resource retrieved from the OntModel, SPIN throws an >> exception and won't build a Query out of it. > > > The exception probably has something to do with certain system variables > from the SPIN/SP namespaces not found, so you may be right that it expects > the full imports at query parsing time. > > What I do not understand why the import resolution does not pick up those > namespaces (as it should), so if my response doesn't help then I need more > info (stack trace). > > >> I think it's because it >> is operating on the Model level and does not see the imports. >> >> Am I possibly right? In that case, what is to be done in such >> situation? Should I just manually add the imported Model before >> passing Resource to SPIN? > > > What I sometimes do in such cases is to create yet another MultiUnion that > imports your model. E.g. (untested) > > MultiUnion union = new MultiUnion(new Graph[] { > myQueryModel.getGraph(), > SP.getModel().getGraph(), > SPIN.getModel().getGraph() > }); > Model newModel = ModelFactory.createModelForGraph(union); > > Then parse the SPIN queries based on newModel. > > HTH > Holger >
