help to resolve exception to obtain SKOSDataset

[Paola Montorio]

 

Hi dev group,

I ask you kindly support regarding the use of SKOS and OWL API.

 

The problem.

Especially in the initial steps after the class instantiated SkosManager, invoke on that object one of two methods to load the Ontology .owl

The two methods of SkosManager class: loadDatasetFromPhysicalURI and loadDataset.

 

Both these methods require as input an instance of URI as the absolute path of the ontology. I'm having so much always the same anomaly.

The exception that I get is the following:

 

  -----------

java.lang.ClassCastException: org.coode.owl.krssparser.KRSSOWLParserFactory cannot be cast to org.semanticweb.owl.io.OWLParserFactory

         at uk.ac.manchester.cs.owl.ParsableOWLOntologyFactory.getParsers(ParsableOWLOntologyFactory.java:84)

         at uk.ac.manchester.cs.owl.ParsableOWLOntologyFactory.loadOWLOntology(ParsableOWLOntologyFactory.java:154)

         at uk.ac.manchester.cs.owl.OWLOntologyManagerImpl.loadOntology(OWLOntologyManagerImpl.java:250)

 

---------------

 

The two codes where this falls ClassCastException are:

a.    invocation loadDataset method :

SKOSManager manager = new SKOSManager();

SKOSDataset dataSet = manager.loadDataset(URI.create("file:C:/modello_skos_secondo_prototipo.owl"));

           or

                  SKOSDataset dataSet = manager.loadDataset(URI.create("http://localhost:8080/provaWeb/"));

 

 

b.    invocation loadDatasetFromPhysicalURI method :

                   SKOSManager manager = new SKOSManager();

                   SKOSDataset dataSet = manager.loadDatasetFromPhysicalURI(URI.create("file:C:/modello_skos_secondo_prototipo.owl"));

 

Did you encounter this exception and if so, how did you solved?

Otherwise you can send the SKOS and OWL API libraries to use?

The SDK version on which development is 1.6, may also be a version problem?

 

Thank you in advance of the hand to overcome this problem,

Regards

 

ITSLab srl PAOLA MONTORIO SSD - Area Application Management Analyst Senior   Via Terragneta 90 80058 Torre Annunziata (Naples) - ITALY Phone:    +39 0815353310 Fax:        +39 0815353700 E-mail:     paola.m...@itslab.it Web:       www.itslab.it

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[Simon Jupp]

Hi Paola, 

Sorry you are having some problems. It looks like a parsing error but that doesn't look like the full error message, if there are more errors being thrown can you also send them to me please?

Can you also let me know which version of the API you are using. If you have a public version version of the file you are trying to load, or want to send me a copy offline, then I can also take a look at that. 

Cheers

Simon

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[Paola Montorio]

Hi Simon,
I have fixed the exception, I've loading the correct version for both Skos and Owl api.
Thanks very much for your fast answer but I haven't  more errors.


cheers
Paola

E-mail:     paola.montorio@itslab.it Web:       www.itslab.it

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