And here is the stack trace. Sorry about sending multiple emails. java.util.ConcurrentModificationException: Iterator: started at 6, now 7 at com.hp.hpl.jena.tdb.sys.DatasetControlMRSW.policyError(DatasetControlMRSW.java:157) at com.hp.hpl.jena.tdb.sys.DatasetControlMRSW.access$000(DatasetControlMRSW.java:32) at com.hp.hpl.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.checkCourrentModification(DatasetControlMRSW.java:110) at com.hp.hpl.jena.tdb.sys.DatasetControlMRSW$IteratorCheckNotConcurrent.hasNext(DatasetControlMRSW.java:118) at org.apache.jena.atlas.iterator.Iter$4.hasNext(Iter.java:318) at org.apache.jena.atlas.iterator.Iter$4.hasNext(Iter.java:318) at org.apache.jena.atlas.iterator.Iter.hasNext(Iter.java:916) at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90) at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90) at com.hp.hpl.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:54) at com.hp.hpl.jena.graph.compose.CompositionBase$2.hasNext(CompositionBase.java:94) at com.hp.hpl.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:103) at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90) at com.hp.hpl.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:103) at com.hp.hpl.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:103) at com.hp.hpl.jena.reasoner.rulesys.impl.TopLevelTripleMatchFrame.nextMatch(TopLevelTripleMatchFrame.java:55) at com.hp.hpl.jena.reasoner.rulesys.impl.LPInterpreter.run(LPInterpreter.java:327) at com.hp.hpl.jena.reasoner.rulesys.impl.LPInterpreter.next(LPInterpreter.java:189) at com.hp.hpl.jena.reasoner.rulesys.impl.Generator.pump(Generator.java:253) at com.hp.hpl.jena.reasoner.rulesys.impl.Generator.pump(Generator.java:240) at com.hp.hpl.jena.reasoner.rulesys.impl.LPBRuleEngine.pump(LPBRuleEngine.java:311) at com.hp.hpl.jena.reasoner.rulesys.impl.LPTopGoalIterator.moveForward(LPTopGoalIterator.java:107) at com.hp.hpl.jena.reasoner.rulesys.impl.LPTopGoalIterator.hasNext(LPTopGoalIterator.java:222) at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90) at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90) at com.hp.hpl.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:54) at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90) at com.hp.hpl.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:54) at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90) at com.hp.hpl.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:54) at com.hp.hpl.jena.graph.compose.CompositionBase$2.hasNext(CompositionBase.java:94) at com.hp.hpl.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:103) at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90) at com.hp.hpl.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:103) at com.hp.hpl.jena.util.iterator.NiceIterator$1.hasNext(NiceIterator.java:103) at com.hp.hpl.jena.reasoner.rulesys.impl.TopLevelTripleMatchFrame.nextMatch(TopLevelTripleMatchFrame.java:55) at com.hp.hpl.jena.reasoner.rulesys.impl.LPInterpreter.run(LPInterpreter.java:327) at com.hp.hpl.jena.reasoner.rulesys.impl.LPInterpreter.next(LPInterpreter.java:189) at com.hp.hpl.jena.reasoner.rulesys.impl.LPTopGoalIterator.moveForward(LPTopGoalIterator.java:98) at com.hp.hpl.jena.reasoner.rulesys.impl.LPTopGoalIterator.hasNext(LPTopGoalIterator.java:222) at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90) at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90) at com.hp.hpl.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:54) at com.hp.hpl.jena.util.iterator.WrappedIterator.hasNext(WrappedIterator.java:90) at com.hp.hpl.jena.util.iterator.FilterIterator.hasNext(FilterIterator.java:54) at com.hp.hpl.jena.graph.impl.GraphBase.containsByFind(GraphBase.java:331) at com.hp.hpl.jena.graph.impl.GraphBase.graphBaseContains(GraphBase.java:309) at com.hp.hpl.jena.graph.impl.GraphBase.contains(GraphBase.java:301) at com.hp.hpl.jena.graph.impl.GraphBase.contains(GraphBase.java:318) at com.hp.hpl.jena.rdf.model.impl.ModelCom.contains(ModelCom.java:1222) at com.hp.hpl.jena.rdf.model.impl.ResourceImpl.hasProperty(ResourceImpl.java:340) at com.hp.hpl.jena.ontology.impl.OntClassImpl.isRestriction(OntClassImpl.java:868) at com.eduworks.ontology.OntologyClass.getJSONRepresentation(OntologyClass.java:457) at com.eduworks.ontology.OntologyInstance.createInstance(OntologyInstance.java:64) at com.eduworks.ontology.Ontology.createInstance(Ontology.java:396) at com.eduworks.ontology.test.TestOntology.test_LoadExternalStructure(TestOntology.java:334) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28) at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31) at org.junit.runners.ParentRunner.run(ParentRunner.java:236) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
On Wed, Aug 13, 2014 at 9:21 AM, Devlin Junker <devlin.jun...@eduworks.com> wrote: > I forgot to mention that this is happening during a Write Transaction on > the Dataset, in case that is important. > > Devlin > > > On Wed, Aug 13, 2014 at 9:19 AM, Devlin Junker <devlin.jun...@eduworks.com > > wrote: > >> Hi, >> >> I am having a little bit of trouble implementing the TDB store for my >> Jena Ontologies. I have been able to solve most of the issues that I've >> come across, but I have become frustrated with the view request functions >> that the Ontology objects define. >> >> I am trying to get a list of all of the restrictions that define a >> certain OntClass, but while I am looping through all of the superclasses >> for the class I receive a ConcurrentModificationException when calling the >> is[Restriction, DatatypeProperty, and SomeValuesFromRestriction] calls. >> >> Apparently it is happening when finding the triple on the graph that >> would define it as the certain view type. The exception is thrown on the >> iterator.hasNext in GraphBase.containsByFind(). >> >> The application I am running is only single threaded (I think, it is in a >> JUnit Test Case) so I don't think any other modifications should actually >> be happening to the Dataset while I am checking against the View Type. >> >> I've included the important code below and highlighted the area where the >> exception is thrown. >> >> Thanks for any help you can offer, >> Devlin >> >> List<OntClass> supers = jenaClass.listSuperClasses().toList(); >> >> for(int index = 0; index < supers.size(); index++){ >> OntClass cls = supers.get(index); >> if(cls.isRestriction()){ >> Restriction r = cls.asRestriction(); >> String valueId = ""; >> OntProperty prop = r.getOnProperty(); >> Resource restrictionValue; >> >> if(r.isAllValuesFromRestriction()){ >> restrictionValue = r.asAllValuesFromRestriction().getAllValuesFrom(); >> }else if(r.isSomeValuesFromRestriction()){ >> restrictionValue = r.asSomeValuesFromRestriction().getSomeValuesFrom(); >> }else{ >> // TODO: Implement Cardinality Restrictions >> throw new RuntimeException("Unexpected Restriction Type"); >> } >> if(prop.isDatatypeProperty()){ >> // TODO: More DataTypes >> if(restrictionValue.equals(XSD.xint) || >> restrictionValue.equals(XSD.integer)){ >> valueId = "xsd:integer"; >> }else if(restrictionValue.equals(XSD.xstring)){ >> valueId = "xsd:string"; >> }else if(restrictionValue.equals(XSD.xdouble)){ >> valueId = "xsd:double"; >> }else if(restrictionValue.equals(XSD.dateTime)){ >> valueId = "xsd:dateTime"; >> }else{ >> throw new RuntimeException("Unrecognized DataType: >> "+restrictionValue.toString()); >> } >> }else{ >> valueId = getIdentifier(restrictionValue.getURI()); >> } >> try{ >> if(r.isAllValuesFromRestriction()){ >> JSONArray restriction = rest.optJSONArray(getIdentifier(prop.getURI())); >> if(restriction == null || !restriction.toString().contains(valueId)){ >> rest.append(getIdentifier(prop.getURI()), valueId); >> } >> }else if(r.isSomeValuesFromRestriction()){ >> JSONArray requirement = req.optJSONArray(getIdentifier(prop.getURI())); >> // TODO: HACK (For some reason during update I am getting duplicate of >> the some value restrictions) >> if(requirement == null || !requirement.toString().contains(valueId)){ >> req.append(getIdentifier(prop.getURI()), valueId); >> } >> }else{ >> // TODO: Implement Cardinality Restrictions >> throw new RuntimeException("Unexpected Restriction Type"); >> } >> }catch(JSONException e){ >> throw new RuntimeException("Error Creating JSON Object for Property " + >> prop); >> } >> } >> } >> > >