[jboss-jira] [JBoss JIRA] (JBRULES-3611) Benchmarker gives serialization error because the default ProblemIO doesn't use a default XStream instance

[ https://issues.jboss.org/browse/JBRULES-3611?page=com.atlassian.jira.plug... ] Geoffrey De Smet updated JBRULES-3611: -------------------------------------- Summary: Benchmarker gives serialization error because the default ProblemIO doesn't use a default XStream instance (was: Benchmark doesn't work with Joda datetime API) Issue Type: Enhancement (was: Bug) Description: Old title: Benchmark doesn't work with Joda datetime API My problem's domain uses Joda's DateTime and Duration classes. After starting a benchmark I'm getting an exception. See below: Code running the benchmark: {quote} XmlPlannerBenchmarkFactory plannerBenchmarkFactory = new XmlPlannerBenchmarkFactory(); plannerBenchmarkFactory.configure("/pl/mskiba/dancingCobra/domain/BenchmarkConfig.xml"); PlannerBenchmark plannerBenchmark = plannerBenchmarkFactory.buildPlannerBenchmark(); plannerBenchmark.benchmark(); {quote} BenchmarkConfig.xml: {quote} <?xml version="1.0" encoding="UTF-8"?> <plannerBenchmark> <benchmarkDirectory>/home/marcin/benchmark</benchmarkDirectory> <warmUpSecondsSpend>30</warmUpSecondsSpend> <inheritedSolverBenchmark> <problemBenchmarks> <xstreamAnnotatedClass>pl.mskiba.dancingCobra.domain.Schedule</xstreamAnnotatedClass> <inputSolutionFile>/home/marcin/workspace/DancingCobra/src/main/resources/pl/mskiba/dancingCobra/domain/testProblems/Problem.xml</inputSolutionFile> <problemStatisticType>BEST_SOLUTION_CHANGED</problemStatisticType> </problemBenchmarks> <solver> <solutionClass>pl.mskiba.dancingCobra.domain.Schedule</solutionClass> <planningEntityClass>pl.mskiba.dancingCobra.domain.TaskAssignment</planningEntityClass> <scoreDirectorFactory> <scoreDefinitionType>HARD_AND_SOFT</scoreDefinitionType> <scoreDrl>/pl/mskiba/dancingCobra/domain/score/scoreRules.drl</scoreDrl> </scoreDirectorFactory> <termination> <scoreAttained>0hard/0soft</scoreAttained> <maximumHoursSpend>1</maximumHoursSpend> </termination> </solver> </inheritedSolverBenchmark> <solverBenchmark> <name>First Benchmark</name> <solver> <localSearch> <selector> <selector> <moveFactoryClass>pl.mskiba.dancingCobra.domain.move.AssignedMoveFactory</moveFactoryClass> </selector> <selector> <moveFactoryClass>pl.mskiba.dancingCobra.domain.move.UnassignedMoveFactory</moveFactoryClass> </selector> </selector> <acceptor> <undoMoveTabuSize>5</undoMoveTabuSize> <moveTabuSize>5</moveTabuSize> </acceptor> <forager> <minimalAcceptedSelection>1000</minimalAcceptedSelection> <pickEarlyType>FIRST_BEST_SCORE_IMPROVING</pickEarlyType> </forager> </localSearch> </solver> </solverBenchmark> </plannerBenchmark> {quote} After running this code I'm getting: {quote} 0 [main] INFO org.drools.planner.benchmark.core.DefaultPlannerBenchmark - Benchmarking started: solverBenchmarkList size (1). 1 [main] INFO org.drools.planner.benchmark.core.DefaultPlannerBenchmark - ================================================================================ 1 [main] INFO org.drools.planner.benchmark.core.DefaultPlannerBenchmark - Warming up 1 [main] INFO org.drools.planner.benchmark.core.DefaultPlannerBenchmark - ================================================================================ {quote} And an Exception: {quote} java.lang.IllegalArgumentException: Problem reading inputSolutionFile: /home/marcin/workspace/DancingCobra/src/main/resources/pl/mskiba/dancingCobra/domain/testProblems/Problem.xml at org.drools.planner.benchmark.core.XStreamProblemIO.read(XStreamProblemIO.java:64) at org.drools.planner.benchmark.core.ProblemBenchmark.readPlanningProblem(ProblemBenchmark.java:161) at org.drools.planner.benchmark.core.ProblemBenchmark.warmUp(ProblemBenchmark.java:147) at org.drools.planner.benchmark.core.DefaultPlannerBenchmark.warmUp(DefaultPlannerBenchmark.java:191) at org.drools.planner.benchmark.core.DefaultPlannerBenchmark.benchmark(DefaultPlannerBenchmark.java:131) at pl.mskiba.dancingCobra.scheduleTest.BenchmarkTest.test(BenchmarkTest.java:17) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222) at org.junit.runners.ParentRunner.run(ParentRunner.java:300) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) Caused by: com.thoughtworks.xstream.converters.ConversionException: Cannot create org.joda.time.chrono.ISOChronology$Stub by JDK serialization : null : Cannot create org.joda.time.chrono.ISOChronology$Stub by JDK serialization : null ---- Debugging information ---- message : Cannot create org.joda.time.chrono.ISOChronology$Stub by JDK serialization : null cause-exception : com.thoughtworks.xstream.converters.reflection.ObjectAccessException cause-message : Cannot create org.joda.time.chrono.ISOChronology$Stub by JDK serialization : null class : org.joda.time.chrono.ISOChronology$Stub required-type : org.joda.time.chrono.ISOChronology$Stub converter-type : com.thoughtworks.xstream.converters.reflection.SerializableConverter line number : 13 class[1] : org.joda.time.DateTime converter-type[1] : com.thoughtworks.xstream.converters.reflection.ReflectionConverter class[2] : pl.mskiba.dancingCobra.domain.utils.TimePeriod class[3] : java.util.ArrayList converter-type[2] : com.thoughtworks.xstream.converters.collections.CollectionConverter class[4] : pl.mskiba.dancingCobra.domain.Worker class[5] : pl.mskiba.dancingCobra.domain.Schedule version : null ------------------------------- at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:79) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50) at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.readItem(AbstractCollectionConverter.java:71) at com.thoughtworks.xstream.converters.collections.CollectionConverter.addCurrentElementToCollection(CollectionConverter.java:79) at com.thoughtworks.xstream.converters.collections.CollectionConverter.populateCollection(CollectionConverter.java:72) at com.thoughtworks.xstream.converters.collections.CollectionConverter.populateCollection(CollectionConverter.java:66) at com.thoughtworks.xstream.converters.collections.CollectionConverter.unmarshal(CollectionConverter.java:61) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50) at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.readItem(AbstractCollectionConverter.java:71) at com.thoughtworks.xstream.converters.collections.CollectionConverter.addCurrentElementToCollection(CollectionConverter.java:79) at com.thoughtworks.xstream.converters.collections.CollectionConverter.populateCollection(CollectionConverter.java:72) at com.thoughtworks.xstream.converters.collections.CollectionConverter.populateCollection(CollectionConverter.java:66) at com.thoughtworks.xstream.converters.collections.CollectionConverter.unmarshal(CollectionConverter.java:61) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50) at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:134) at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32) at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1058) at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1042) at com.thoughtworks.xstream.XStream.fromXML(XStream.java:913) at org.drools.planner.benchmark.core.XStreamProblemIO.read(XStreamProblemIO.java:62) ... 28 more Caused by: com.thoughtworks.xstream.converters.reflection.ObjectAccessException: Cannot create org.joda.time.chrono.ISOChronology$Stub by JDK serialization : null at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.instantiateUsingSerialization(PureJavaReflectionProvider.java:119) at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.newInstance(PureJavaReflectionProvider.java:69) at com.thoughtworks.xstream.converters.reflection.ReflectionProviderWrapper.newInstance(ReflectionProviderWrapper.java:42) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.instantiateNewInstance(AbstractReflectionConverter.java:426) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:233) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) ... 79 more Caused by: java.io.EOFException at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2553) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1296) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350) at org.joda.time.chrono.ISOChronology$Stub.readObject(ISOChronology.java:231) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:969) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350) at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.instantiateUsingSerialization(PureJavaReflectionProvider.java:116) ... 84 more {quote} I can see that there is a problem with org.joda.time.chrono.ISOChronology. In addition - if I run the following code: {quote} XStream xStream = new XStream(); Schedule problem = (Schedule) xStream.fromXML(new FileReader("/home/marcin/workspace/DancingCobra/src/main/resources/pl/mskiba/dancingCobra/domain/testProblems/Problem.xml")); SolverFactory solverFactory = new XmlSolverFactory("/pl/mskiba/dancingCobra/domain/scheduleSolverConfig.xml"); Solver solver = solverFactory.buildSolver(); solver.setPlanningProblem(problem); solver.solve(); {quote} Everything works fine! Same problem, same XML file, same configuration, but with Drools Benchmarker it simply doesn't work. was: My problem's domain uses Joda's DateTime and Duration classes. After starting a benchmark I'm getting an exception. See below: Code running the benchmark: {quote} XmlPlannerBenchmarkFactory plannerBenchmarkFactory = new XmlPlannerBenchmarkFactory(); plannerBenchmarkFactory.configure("/pl/mskiba/dancingCobra/domain/BenchmarkConfig.xml"); PlannerBenchmark plannerBenchmark = plannerBenchmarkFactory.buildPlannerBenchmark(); plannerBenchmark.benchmark(); {quote} BenchmarkConfig.xml: {quote} <?xml version="1.0" encoding="UTF-8"?> <plannerBenchmark> <benchmarkDirectory>/home/marcin/benchmark</benchmarkDirectory> <warmUpSecondsSpend>30</warmUpSecondsSpend> <inheritedSolverBenchmark> <problemBenchmarks> <xstreamAnnotatedClass>pl.mskiba.dancingCobra.domain.Schedule</xstreamAnnotatedClass> <inputSolutionFile>/home/marcin/workspace/DancingCobra/src/main/resources/pl/mskiba/dancingCobra/domain/testProblems/Problem.xml</inputSolutionFile> <problemStatisticType>BEST_SOLUTION_CHANGED</problemStatisticType> </problemBenchmarks> <solver> <solutionClass>pl.mskiba.dancingCobra.domain.Schedule</solutionClass> <planningEntityClass>pl.mskiba.dancingCobra.domain.TaskAssignment</planningEntityClass> <scoreDirectorFactory> <scoreDefinitionType>HARD_AND_SOFT</scoreDefinitionType> <scoreDrl>/pl/mskiba/dancingCobra/domain/score/scoreRules.drl</scoreDrl> </scoreDirectorFactory> <termination> <scoreAttained>0hard/0soft</scoreAttained> <maximumHoursSpend>1</maximumHoursSpend> </termination> </solver> </inheritedSolverBenchmark> <solverBenchmark> <name>First Benchmark</name> <solver> <localSearch> <selector> <selector> <moveFactoryClass>pl.mskiba.dancingCobra.domain.move.AssignedMoveFactory</moveFactoryClass> </selector> <selector> <moveFactoryClass>pl.mskiba.dancingCobra.domain.move.UnassignedMoveFactory</moveFactoryClass> </selector> </selector> <acceptor> <undoMoveTabuSize>5</undoMoveTabuSize> <moveTabuSize>5</moveTabuSize> </acceptor> <forager> <minimalAcceptedSelection>1000</minimalAcceptedSelection> <pickEarlyType>FIRST_BEST_SCORE_IMPROVING</pickEarlyType> </forager> </localSearch> </solver> </solverBenchmark> </plannerBenchmark> {quote} After running this code I'm getting: {quote} 0 [main] INFO org.drools.planner.benchmark.core.DefaultPlannerBenchmark - Benchmarking started: solverBenchmarkList size (1). 1 [main] INFO org.drools.planner.benchmark.core.DefaultPlannerBenchmark - ================================================================================ 1 [main] INFO org.drools.planner.benchmark.core.DefaultPlannerBenchmark - Warming up 1 [main] INFO org.drools.planner.benchmark.core.DefaultPlannerBenchmark - ================================================================================ {quote} And an Exception: {quote} java.lang.IllegalArgumentException: Problem reading inputSolutionFile: /home/marcin/workspace/DancingCobra/src/main/resources/pl/mskiba/dancingCobra/domain/testProblems/Problem.xml at org.drools.planner.benchmark.core.XStreamProblemIO.read(XStreamProblemIO.java:64) at org.drools.planner.benchmark.core.ProblemBenchmark.readPlanningProblem(ProblemBenchmark.java:161) at org.drools.planner.benchmark.core.ProblemBenchmark.warmUp(ProblemBenchmark.java:147) at org.drools.planner.benchmark.core.DefaultPlannerBenchmark.warmUp(DefaultPlannerBenchmark.java:191) at org.drools.planner.benchmark.core.DefaultPlannerBenchmark.benchmark(DefaultPlannerBenchmark.java:131) at pl.mskiba.dancingCobra.scheduleTest.BenchmarkTest.test(BenchmarkTest.java:17) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222) at org.junit.runners.ParentRunner.run(ParentRunner.java:300) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) Caused by: com.thoughtworks.xstream.converters.ConversionException: Cannot create org.joda.time.chrono.ISOChronology$Stub by JDK serialization : null : Cannot create org.joda.time.chrono.ISOChronology$Stub by JDK serialization : null ---- Debugging information ---- message : Cannot create org.joda.time.chrono.ISOChronology$Stub by JDK serialization : null cause-exception : com.thoughtworks.xstream.converters.reflection.ObjectAccessException cause-message : Cannot create org.joda.time.chrono.ISOChronology$Stub by JDK serialization : null class : org.joda.time.chrono.ISOChronology$Stub required-type : org.joda.time.chrono.ISOChronology$Stub converter-type : com.thoughtworks.xstream.converters.reflection.SerializableConverter line number : 13 class[1] : org.joda.time.DateTime converter-type[1] : com.thoughtworks.xstream.converters.reflection.ReflectionConverter class[2] : pl.mskiba.dancingCobra.domain.utils.TimePeriod class[3] : java.util.ArrayList converter-type[2] : com.thoughtworks.xstream.converters.collections.CollectionConverter class[4] : pl.mskiba.dancingCobra.domain.Worker class[5] : pl.mskiba.dancingCobra.domain.Schedule version : null ------------------------------- at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:79) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50) at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.readItem(AbstractCollectionConverter.java:71) at com.thoughtworks.xstream.converters.collections.CollectionConverter.addCurrentElementToCollection(CollectionConverter.java:79) at com.thoughtworks.xstream.converters.collections.CollectionConverter.populateCollection(CollectionConverter.java:72) at com.thoughtworks.xstream.converters.collections.CollectionConverter.populateCollection(CollectionConverter.java:66) at com.thoughtworks.xstream.converters.collections.CollectionConverter.unmarshal(CollectionConverter.java:61) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50) at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.readItem(AbstractCollectionConverter.java:71) at com.thoughtworks.xstream.converters.collections.CollectionConverter.addCurrentElementToCollection(CollectionConverter.java:79) at com.thoughtworks.xstream.converters.collections.CollectionConverter.populateCollection(CollectionConverter.java:72) at com.thoughtworks.xstream.converters.collections.CollectionConverter.populateCollection(CollectionConverter.java:66) at com.thoughtworks.xstream.converters.collections.CollectionConverter.unmarshal(CollectionConverter.java:61) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:355) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:306) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:234) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50) at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:134) at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32) at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1058) at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1042) at com.thoughtworks.xstream.XStream.fromXML(XStream.java:913) at org.drools.planner.benchmark.core.XStreamProblemIO.read(XStreamProblemIO.java:62) ... 28 more Caused by: com.thoughtworks.xstream.converters.reflection.ObjectAccessException: Cannot create org.joda.time.chrono.ISOChronology$Stub by JDK serialization : null at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.instantiateUsingSerialization(PureJavaReflectionProvider.java:119) at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.newInstance(PureJavaReflectionProvider.java:69) at com.thoughtworks.xstream.converters.reflection.ReflectionProviderWrapper.newInstance(ReflectionProviderWrapper.java:42) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.instantiateNewInstance(AbstractReflectionConverter.java:426) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:233) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) ... 79 more Caused by: java.io.EOFException at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2553) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1296) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350) at org.joda.time.chrono.ISOChronology$Stub.readObject(ISOChronology.java:231) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:969) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350) at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.instantiateUsingSerialization(PureJavaReflectionProvider.java:116) ... 84 more {quote} I can see that there is a problem with org.joda.time.chrono.ISOChronology. In addition - if I run the following code: {quote} XStream xStream = new XStream(); Schedule problem = (Schedule) xStream.fromXML(new FileReader("/home/marcin/workspace/DancingCobra/src/main/resources/pl/mskiba/dancingCobra/domain/testProblems/Problem.xml")); SolverFactory solverFactory = new XmlSolverFactory("/pl/mskiba/dancingCobra/domain/scheduleSolverConfig.xml"); Solver solver = solverFactory.buildSolver(); solver.setPlanningProblem(problem); solver.solve(); {quote} Everything works fine! Same problem, same XML file, same configuration, but with Drools Benchmarker it simply doesn't work. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira