A while back I encountered a complication in using Jena on the mac, with Jena
jars wrapped into an osgi bundle.
The problem is a runtime error complaining:
java.lang.NoClassDefFoundError: org/xml/sax/SAXException
Specifically,
at com.hp.hpl.jena.util.Metadata.read(Metadata.java:67)
at com.hp.hpl.jena.util.Metadata.addMetadata(Metadata.java:41)
at com.hp.hpl.jena.util.Metadata.<init>(Metadata.java:35)
at com.hp.hpl.jena.JenaRuntime.<clinit>(JenaRuntime.java:25)
at
com.hp.hpl.jena.rdf.model.impl.RDFReaderFImpl.<clinit>(RDFReaderFImpl.java:85)
at com.hp.hpl.jena.rdf.model.impl.ModelCom.<clinit>(ModelCom.java:42)
at
com.hp.hpl.jena.rdf.model.ModelFactory.createDefaultModel(ModelFactory.java:122)
at
com.hp.hpl.jena.rdf.model.ModelFactory.createDefaultModel(ModelFactory.java:116)
at com.hp.hpl.jena.vocabulary.OWL.<clinit>(OWL.java:37)
at com.hp.hpl.jena.sparql.ARQConstants.<clinit>(ARQConstants.java:37)
at com.hp.hpl.jena.query.ARQ.<clinit>(ARQ.java:39)
at
com.hp.hpl.jena.sparql.function.FunctionRegistry.get(FunctionRegistry.java:38)
I’m not entirely certain what version of jena is being pulled in for this. The
error’s being thrown from csparql code using jena 2.6.3, but the bulk of my
code is 2.11.0.
That’s probably not relevant, since I’ve seen the same problem on Mac’s before
and resolved it by proper placement of the xerces and xml api files in the
right place. It appears this might have changed in OSX Mavericks, but I’ve been
able to defeat it this time, nor have I been able to glean from the web how to
do so.
Any advice? (And, yes - I expect to try our Linux cluster as a possible
solution).
Thanks,
Mark
