On Oct 15, 2011, at 3:33 AM, Idafen Santana Pérez wrote:
> Hello,
>
> I'm working with the spin java API (1.2.0 version) and found something
> I think could be considered as a bug. The following code works fine
> with the "OWL_DL_MEM_TRANS_INF" spec for loading the OntModel:
Idafen,
activating Jena inferencing over a SPIN RDF graph is not supported because it
may infer additional triples that corrupt the structure of SPIN RDF query
expressions. If you need inferencing, please only do so over the
ontologies/instances but not over the sub-graphs that contain SPIN blank nodes.
Holger
>
> Resource r = ontModel.getResource(sQuery);
> Resource body = r.getProperty(SPIN.body).getResource();
> org.topbraid.spin.model.Query spinQuery = SPINFactory.asQuery(body);
> com.hp.hpl.jena.query.Query arqQuery =
> ARQFactory.get().createQuery(spinQuery);
>
> But when I use the "OWL_MEM_MICRO_RULE_INF" spec (which is a little
> more complete one) the program fails at the third line:
>
> Exception in thread "main" java.lang.NumberFormatException: For input string:
> ""
> at
> java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
> at java.lang.Integer.parseInt(Integer.java:470)
> at java.lang.Integer.valueOf(Integer.java:554)
> at
> org.topbraid.spin.model.impl.FunctionCallImpl.getArgumentProperties(FunctionCallImpl.java:64)
> at
> org.topbraid.spin.model.impl.FunctionCallImpl.getArguments(FunctionCallImpl.java:49)
> at
> org.topbraid.spin.model.impl.FunctionCallImpl.print(FunctionCallImpl.java:172)
> at
> org.topbraid.spin.model.impl.SelectImpl.printProjectExpression(SelectImpl.java:148)
> at org.topbraid.spin.model.impl.SelectImpl.print(SelectImpl.java:78)
> at
> org.topbraid.spin.model.impl.AbstractSPINResourceImpl.toString(AbstractSPINResourceImpl.java:183)
> at
> org.topbradi.spin.examples.utils.mappings.QueryRetriever.getArq(QueryRetriever.java:347)
> at
> org.topbraid.spin.examples.tests.TestQueryRetriever.main(TestQueryRetriever.java:25)
>
> It seems to be a parsing problem, but I'm not really sure. The Sparql
> query I'm trying to load is the following:
>
> SELECT ((xsd:float(?nc) * xsd:float(?power)) AS ?ress)
> WHERE {
> ?arg1 myexample:hasNumberCore ?nc .
> ?arg1 myexample:hasPoer ?power .
> }
>
> Has anyone else dealt with this issue or it's just an specific problem
> of my model/code? I haven't found any help over the Internet, only a
> thread in the group, but it doesn't seem to be the same problem:
>
> http://www.mail-archive.com/[email protected]/msg02115.html
>
> Thanks in advance
>
> Regards
> Idafen
>
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