Uncaught java.lang.NullPointerException

[ryan-carpenter]

JabRef version

Latest development branch build (please note build date below)

Operating system

GNU / Linux

Details on version and operating system

openSUSE Tumbleweed with KDE Plasma 6.0.5

Checked with the latest development build (copy version output from About dialog)

• I made a backup of my libraries before testing the latest development version.
• I have tested the latest development version and the problem persists

Steps to reproduce the behaviour

1. Select a search group
2. Drag an entry to another group that excludes the entry from the search group
3. Select another group => Uncaught exception

Possibly related to #11628

JabRef 5.16--2024-08-13--1374813
Linux 6.9.9-1-default amd64
Java 21.0.2
JavaFX 22.0.2+4

Appendix

...

Log File

java.lang.NullPointerException
	at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
	at java.base/java.util.Iterator.forEachRemaining(Unknown Source)
	at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Unknown Source)
	at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
	at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)
	at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(Unknown Source)
	at java.base/java.util.stream.ReferencePipeline.toArray(Unknown Source)
	at java.base/java.util.stream.ReferencePipeline.toArray(Unknown Source)
	at java.base/java.util.stream.ReferencePipeline.toList(Unknown Source)
	at org.jabref@5.16.226/org.jabref.gui.LibraryTab.lambda$createMainTable$12(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.collections.ListListenerHelper$SingleChange.fireValueChangedEvent(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ObservableListBase.fireChange(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ListChangeBuilder.commit(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ListChangeBuilder.endChange(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ObservableListBase.endChange(Unknown Source)
	at javafx.controls@22.0.2/com.sun.javafx.scene.control.SelectedItemsReadOnlyObservableList.lambda$new$0(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.collections.ListListenerHelper$Generic.fireValueChangedEvent(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ObservableListBase.fireChange(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ListChangeBuilder.commit(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ListChangeBuilder.endChange(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ObservableListBase.endChange(Unknown Source)
	at javafx.controls@22.0.2/com.sun.javafx.scene.control.ReadOnlyUnbackedObservableList._endChange(Unknown Source)
	at javafx.controls@22.0.2/javafx.scene.control.MultipleSelectionModelBase$SelectedIndicesList._endChange(Unknown Source)
	at javafx.controls@22.0.2/javafx.scene.control.ControlUtils.updateSelectedIndices(Unknown Source)
	at javafx.controls@22.0.2/javafx.scene.control.TableView$TableViewArrayListSelectionModel.fireCustomSelectedCellsListChangeEvent(Unknown Source)
	at javafx.controls@22.0.2/javafx.scene.control.TableView$TableViewArrayListSelectionModel.lambda$new$0(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.collections.ListListenerHelper$SingleChange.fireValueChangedEvent(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ObservableListBase.fireChange(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ListChangeBuilder.commit(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ListChangeBuilder.endChange(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ObservableListBase.endChange(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.transformation.SortedList.sourceChanged(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.transformation.TransformationList.lambda$getListener$0(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.WeakListChangeListener.onChanged(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.collections.ListListenerHelper$SingleChange.fireValueChangedEvent(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ObservableListBase.fireChange(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ListChangeBuilder.commit(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ListChangeBuilder.endChange(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ObservableListBase.endChange(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ModifiableObservableListBase.add(Unknown Source)
	at java.base/java.util.AbstractList.add(Unknown Source)
	at javafx.controls@22.0.2/com.sun.javafx.scene.control.SelectedCellsMap.add(Unknown Source)
	at javafx.controls@22.0.2/javafx.scene.control.TableView$TableViewArrayListSelectionModel.select(Unknown Source)
	at javafx.controls@22.0.2/javafx.scene.control.TableView$TableViewArrayListSelectionModel.select(Unknown Source)
	at javafx.controls@22.0.2/javafx.scene.control.MultipleSelectionModelBase.shiftSelection(Unknown Source)
	at javafx.controls@22.0.2/javafx.scene.control.MultipleSelectionModelBase.shiftSelection(Unknown Source)
	at javafx.controls@22.0.2/javafx.scene.control.TableView$TableViewArrayListSelectionModel.updateSelection(Unknown Source)
	at javafx.controls@22.0.2/javafx.scene.control.TableView$TableViewArrayListSelectionModel.lambda$new$2(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.WeakListChangeListener.onChanged(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.collections.ListListenerHelper$Generic.fireValueChangedEvent(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ObservableListBase.fireChange(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ListChangeBuilder.commit(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ListChangeBuilder.endChange(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ObservableListBase.endChange(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.transformation.SortedList.sourceChanged(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.transformation.TransformationList.lambda$getListener$0(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.WeakListChangeListener.onChanged(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.collections.ListListenerHelper$Generic.fireValueChangedEvent(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.ObservableListBase.fireChange(Unknown Source)
	at javafx.base@22.0.2/javafx.collections.transformation.FilteredList.refilter(Unknown Source)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at org.jabref@5.16.226/org.jabref.gui.util.FilteredListProxy.refilterListReflection(Unknown Source)
	at org.jabref@5.16.226/org.jabref.gui.maintable.MainTableDataModel.lambda$updateGroupMatches$18(Unknown Source)
	at org.jabref@5.16.226/org.jabref.gui.util.UiTaskExecutor.lambda$getJavaFXTask$3(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
	at javafx.base@22.0.2/com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
	at javafx.base@22.0.2/javafx.event.Event.fireEvent(Unknown Source)
	at javafx.graphics@22.0.2/javafx.concurrent.EventHelper.fireEvent(Unknown Source)
	at javafx.graphics@22.0.2/javafx.concurrent.Task.fireEvent(Unknown Source)
	at javafx.graphics@22.0.2/javafx.concurrent.Task.setState(Unknown Source)
	at javafx.graphics@22.0.2/javafx.concurrent.Task$TaskCallable.lambda$call$1(Unknown Source)
	at javafx.graphics@22.0.2/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(Unknown Source)
	at java.base/java.security.AccessController.doPrivileged(Unknown Source)
	at javafx.graphics@22.0.2/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(Unknown Source)
	at javafx.graphics@22.0.2/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
	at javafx.graphics@22.0.2/com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
	at javafx.graphics@22.0.2/com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$10(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)

[LoayGhreeb]

I can't reproduce the issue.

I have the following library:

@Article{,
  title = {e1},
}

@Article{,
  title  = {e2},
  groups = {g1},
}

@Article{,
  title = {e3},
}

@Article{,
  title  = {e4},
  groups = {g2},
}

@Comment{jabref-meta: databaseType:bibtex;}

@Comment{jabref-meta: grouping:
0 AllEntriesGroup:;
1 SearchGroup:Not g1\;1\;groups != g1\;0\;0\;1\;\;\;\;;
1 StaticGroup:g1\;1\;0\;\;\;\;;
1 StaticGroup:g2\;1\;1\;\;\;\;;
}

• Selected the group "Not g1".
• Dragged entries into "g1".
• The entries will either hidden or the background color will change if in the floating mode.
• Switching to "g1" or "g2" did not cause any exceptions.

[ryan-carpenter]

I am now on JabRef 5.16--2024-08-26--1620002 and will try to reproduce the exception. There isn't anything in the trace that I can decipher, so here are some details that could be important (guesses).

• the library contains about 120 user-created groups plus a long list created by JabRef from the keywords field.
• The groups and search groups associated with the exception were user-created.
• The search groups include Boolean statements without regular expressions.
• Group names include non-alphanumeric characters such as : and /, with ; as the separator
• Most of the groups are nested one level deep.

Here are some examples.

2 StaticGroup::mygroup-001/example\;2\;1\;0xcd5865ff\;\;A static-group description\;;
3 SearchGroup:buyme\;2\;groups=:paywall and file!="" and groups!=/exclude\;0\;0\;1\;0x008000ff\;CURRENCY_USD\;A search-group description\;;