java.lang.NullPointerException

GitHub | skodape | 9 months ago
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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at org.eclipse.rdf4j.query.algebra.evaluation.iterator.OrderIterator$1.getNextElement()
  2. org.eclipse.rdf4j
    Iterations.asList
    1. org.eclipse.rdf4j.query.algebra.evaluation.iterator.OrderIterator$1.getNextElement(OrderIterator.java:177)
    2. org.eclipse.rdf4j.query.algebra.evaluation.iterator.OrderIterator$1.getNextElement(OrderIterator.java:165)
    3. org.eclipse.rdf4j.common.iteration.LookAheadIteration.lookAhead(LookAheadIteration.java:78)
    4. org.eclipse.rdf4j.common.iteration.LookAheadIteration.hasNext(LookAheadIteration.java:48)
    5. org.eclipse.rdf4j.common.iteration.DelayedIteration.hasNext(DelayedIteration.java:68)
    6. org.eclipse.rdf4j.common.iteration.IterationWrapper.hasNext(IterationWrapper.java:56)
    7. org.eclipse.rdf4j.common.iteration.FilterIteration.findNextElement(FilterIteration.java:69)
    8. org.eclipse.rdf4j.common.iteration.FilterIteration.hasNext(FilterIteration.java:44)
    9. org.eclipse.rdf4j.common.iteration.ConvertingIteration.hasNext(ConvertingIteration.java:62)
    10. org.eclipse.rdf4j.common.iteration.ConvertingIteration.hasNext(ConvertingIteration.java:62)
    11. org.eclipse.rdf4j.common.iteration.IterationWrapper.hasNext(IterationWrapper.java:56)
    12. org.eclipse.rdf4j.common.iteration.FilterIteration.findNextElement(FilterIteration.java:69)
    13. org.eclipse.rdf4j.common.iteration.FilterIteration.hasNext(FilterIteration.java:44)
    14. org.eclipse.rdf4j.common.iteration.IterationWrapper.hasNext(IterationWrapper.java:56)
    15. org.eclipse.rdf4j.sail.base.SailClosingIteration.hasNext(SailClosingIteration.java:86)
    16. org.eclipse.rdf4j.common.iteration.IterationWrapper.hasNext(IterationWrapper.java:56)
    17. org.eclipse.rdf4j.sail.helpers.SailBaseIteration.hasNext(SailBaseIteration.java:44)
    18. org.eclipse.rdf4j.common.iteration.IterationWrapper.hasNext(IterationWrapper.java:56)
    19. org.eclipse.rdf4j.common.iteration.FilterIteration.findNextElement(FilterIteration.java:69)
    20. org.eclipse.rdf4j.common.iteration.FilterIteration.hasNext(FilterIteration.java:44)
    21. org.eclipse.rdf4j.common.iteration.ConvertingIteration.hasNext(ConvertingIteration.java:62)
    22. org.eclipse.rdf4j.common.iteration.IterationWrapper.hasNext(IterationWrapper.java:56)
    23. org.eclipse.rdf4j.common.iteration.Iterations.addAll(Iterations.java:72)
    24. org.eclipse.rdf4j.common.iteration.Iterations.asList(Iterations.java:37)
    24 frames
  3. eu.skodape.sandbox
    ConstructSelectOrderRand.lambda$main$0
    1. eu.skodape.sandbox.rdf4j.ConstructSelectOrderRand.lambda$main$0(ConstructSelectOrderRand.java:62)
    1 frame
  4. org.eclipse.rdf4j
    Repositories.graphQuery
    1. org.eclipse.rdf4j.repository.util.Repositories.lambda$graphQuery$16(Repositories.java:289)
    2. org.eclipse.rdf4j.repository.util.Repositories.get(Repositories.java:127)
    3. org.eclipse.rdf4j.repository.util.Repositories.graphQuery(Repositories.java:286)
    3 frames
  5. eu.skodape.sandbox
    ConstructSelectOrderRand.main
    1. eu.skodape.sandbox.rdf4j.ConstructSelectOrderRand.main(ConstructSelectOrderRand.java:61)
    1 frame