Dear all and now I tried to use - following the documentation - TDB in order to persist a data model. I need to load and navigate an owl2 ontology in http://webprotege.stanford.edu/#Edit:projectId=28f5a3a4-5896-42e8-8ea0-fe91aa7187a6
I am using he jars coming with Jena-2-12-1 hence here jena-tdb-1.1.1.jar together with jena-2.3.jar According to the description in https://jena.apache.org/documentation/tdb/java_api.html the commands are: // Make a TDB-backed dataset String braintumordir = "/.../ONTOLOGIEN/brain_tumour_ontology-ontologies-owl-REVISION-1/" ; (*) Dataset dataset = TDBFactory.createDataset(braintumordir) ; dataset.begin(ReadWrite.READ) ; Model model = dataset.getDefaultModel() ; // Here the model should be used???? dataset.end() ; At (*) an exception is thrown: SEVERE: StandardWrapper.Throwable java.lang.IncompatibleClassChangeError: Implementing class at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:760) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:2452) at org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:854) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1264) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1147) at com.hp.hpl.jena.graph.NodeFactory.createLiteral(NodeFactory.java:81) at com.hp.hpl.jena.sparql.graph.NodeConst.<clinit>(NodeConst.java:29) at com.hp.hpl.jena.sparql.engine.optimizer.reorder.ReorderFixed.<clinit>(ReorderFixed.java:59) at com.hp.hpl.jena.sparql.engine.optimizer.reorder.ReorderLib.fixed(ReorderLib.java:71) at com.hp.hpl.jena.tdb.sys.SystemTDB.<clinit>(SystemTDB.java:187) at com.hp.hpl.jena.tdb.TDB.<clinit>(TDB.java:90) at com.hp.hpl.jena.tdb.setup.DatasetBuilderStd.<clinit>(DatasetBuilderStd.java:64) at com.hp.hpl.jena.tdb.StoreConnection.make(StoreConnection.java:227) at com.hp.hpl.jena.tdb.transaction.DatasetGraphTransaction.<init>(DatasetGraphTransaction.java:75) at com.hp.hpl.jena.tdb.sys.TDBMaker._create(TDBMaker.java:57) at com.hp.hpl.jena.tdb.sys.TDBMaker.createDatasetGraphTransaction(TDBMaker.java:45) at com.hp.hpl.jena.tdb.TDBFactory._createDatasetGraph(TDBFactory.java:104) at com.hp.hpl.jena.tdb.TDBFactory.createDatasetGraph(TDBFactory.java:73) at com.hp.hpl.jena.tdb.TDBFactory.createDataset(TDBFactory.java:52) at com.hp.hpl.jena.tdb.TDBFactory.createDataset(TDBFactory.java:48) at com.semweb.semsearch.RDFNavigation.init(RDFNavigation.java:98) at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1241) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1154) at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:827) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:135) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1085) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658) at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1556) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1513) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) And I have again no idea what to do ... in order to fix it. My questions are: 1. How can I fix this error please ? 2. How can I instantiate an OntModel out of this model. Thanks a lot in advance Fabio
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