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frib-high-level-controls / save-set-restore

save set restore
MIT License
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Data set retrieve problem when any pv had problem during taking snapshot #13

Closed shengb closed 8 years ago

shengb commented 8 years ago

If there was any pv not connected during taking snapshot, the CS-Studio can not get saved data set back.

""" An internal error occurred during: "Save and Restore: Load snapshot data". java.lang.NullPointerException """

jbobnar commented 8 years ago

Please, provide the entire exception stack trace, because it does not happen to me.

shengb commented 8 years ago

I am using Eric's distribution, and unfortunately, there is no exception stack trace available in any console. Here is an easy way to reproduce it:

  1. Using MASAR to take a snapshot with a few PVs not available, which the values would be NULL;
  2. Try to retrieve the same snapshot, which would give you the error.

If you like, I can send you example database offline.

berryma4 commented 8 years ago

Do you see anything if you open a console? On Feb 17, 2016 8:57 AM, "Guobao Shen" notifications@github.com wrote:

I am using Eric's distribution, and unfortunately, there is no exception stack trace available in any console. Here is an easy way to reproduce it:

  1. Using MASAR to take a snapshot with a few PVs not available, which the values would be NULL;
  2. Try to retrieve the same snapshot, which would give you the error.

If you like, I can send you example database offline.

— Reply to this email directly or view it on GitHub https://github.com/frib-high-level-controls/save-set-restore/issues/13#issuecomment-185215000 .

shengb commented 8 years ago

OK, now I switched to linux terminal, and here is the output: 2016-02-17 09:07:15.297 SEVERE [Thread 21] org.csstudio.logging.PluginLogListener (logging) - An internal error occurred during: "Save and Restore: Load snapshot data". java.lang.NullPointerException at gov.aps.jca.ValuedEnum.isEqualTo(ValuedEnum.java:34) at org.csstudio.saverestore.masar.MasarUtilities.fromEpics(MasarUtilities.java:260) at org.csstudio.saverestore.masar.MasarUtilities.resultToVSnapshot(MasarUtilities.java:243) at org.csstudio.saverestore.masar.MasarClient.loadSnapshotData(MasarClient.java:463) at org.csstudio.saverestore.masar.MasarDataProvider.getSnapshotContent(MasarDataProvider.java:258) at org.csstudio.saverestore.ui.ActionManager.loadSnapshot(ActionManager.java:77) at org.csstudio.saverestore.ui.ActionManager.lambda$1(ActionManager.java:89) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:52) at org.csstudio.saverestore.SaveRestoreService$SaveRestoreJob.run(SaveRestoreService.java:87) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

jbobnar commented 8 years ago

I fixed this exception (797e34f). The cause was that masar sent a severity code that is unknown to epics.