java.lang.NullPointerException

GitHub | chen-regen | 7 months ago
  1. 0

    Getting errors when trying to publish R2RML model

    GitHub | 7 months ago | chen-regen
    java.lang.NullPointerException
  2. 0

    GitHub comment 269#236888337

    GitHub | 4 months ago | chen-regen
    java.lang.NullPointerException
  3. 0

    Android: Saving Map State in Google map

    Stack Overflow | 11 months ago | Junie Negentien
    java.lang.RuntimeException: Unable to resume activity {com.ourThesis.junieNegentien2015/com.ourThesis.junieNegentien2015.MainActivity}: java.lang.NullPointerException
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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at edu.isi.karma.kr2rml.KR2RMLMappingWriter.addCompleteWorksheetHistory()
    2. edu.isi.karma
      RequestController.doPost
      1. edu.isi.karma.kr2rml.KR2RMLMappingWriter.addCompleteWorksheetHistory(KR2RMLMappingWriter.java:435)
      2. edu.isi.karma.kr2rml.KR2RMLMappingWriter.addKR2RMLMappingResource(KR2RMLMappingWriter.java:115)
      3. edu.isi.karma.kr2rml.KR2RMLMappingWriter.addR2RMLMapping(KR2RMLMappingWriter.java:141)
      4. edu.isi.karma.controller.command.alignment.R2RMLAlignmentFileSaver.writeModel(R2RMLAlignmentFileSaver.java:127)
      5. edu.isi.karma.controller.command.alignment.R2RMLAlignmentFileSaver.saveAlignment(R2RMLAlignmentFileSaver.java:107)
      6. edu.isi.karma.controller.command.alignment.R2RMLAlignmentFileSaver.saveAlignment(R2RMLAlignmentFileSaver.java:79)
      7. edu.isi.karma.controller.command.alignment.GenerateR2RMLModelCommand.doIt(GenerateR2RMLModelCommand.java:284)
      8. edu.isi.karma.controller.history.CommandHistory.doCommand(CommandHistory.java:162)
      9. edu.isi.karma.controller.history.CommandHistory.doCommand(CommandHistory.java:130)
      10. edu.isi.karma.webserver.ExecutionController.invokeCommand(ExecutionController.java:129)
      11. edu.isi.karma.webserver.RequestController.doPost(RequestController.java:99)
      11 frames
    3. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:755)
      2. javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
      2 frames
    4. Jetty
      QueuedThreadPool$3.run
      1. org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:698)
      2. org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:505)
      3. org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:138)
      4. org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:564)
      5. org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:213)
      6. org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1096)
      7. org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:432)
      8. org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:175)
      9. org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1030)
      10. org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:136)
      11. org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:201)
      12. org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:109)
      13. org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
      14. org.eclipse.jetty.server.Server.handle(Server.java:445)
      15. org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:268)
      16. org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:229)
      17. org.eclipse.jetty.io.AbstractConnection$ReadCallback.run(AbstractConnection.java:358)
      18. org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:601)
      19. org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:532)
      19 frames
    5. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:745)
      1 frame