#198 Null pointer exception on subset change in Scaffold Tree view

[Karsten Klein]

When a subset is selected by double click in the subset tree to populate a scaffold tree view, a null pointer exception can occur
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at edu.udo.scaffoldhunter.view.scaffoldtree.VRadialLayout.separatorsVali
d(VRadialLayout.java:311)
at edu.udo.scaffoldhunter.view.scaffoldtree.VRadialLayout.layoutAnimatio
nFinished(VRadialLayout.java:321)
at edu.udo.scaffoldhunter.view.scaffoldtree.VAnimation.layoutAnimationFi
nished(VAnimation.java:154)
at edu.udo.scaffoldhunter.view.scaffoldtree.VAnimation$1.activityFinishe
d(VAnimation.java:111)
at edu.umd.cs.piccolo.activities.PActivity.activityFinished(PActivity.ja
va:275)
at edu.umd.cs.piccolo.activities.PInterpolatingActivity.activityFinished
(PInterpolatingActivity.java:281)
at edu.umd.cs.piccolo.activities.PActivity.processStep(PActivity.java:39
4)
at edu.umd.cs.piccolo.activities.PActivityScheduler.processActivities(PA
ctivityScheduler.java:175)
at edu.umd.cs.piccolo.PRoot.processInputs(PRoot.java:332)
at edu.umd.cs.piccolo.PRoot$1.run(PRoot.java:391)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$300(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Sour
ce)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

[Till Schäfer]

this is not reproducible here. can you give some further informations about the dataset used and the settings of the view?

[Till Schäfer]

have you used the release build or was this the git master? Does the Exception always occur?

[Sven Schrinner]

What is meant by "populate a scaffold tree view"? This sounds like, a view is already open, but no subset is selected. I can't produce such a situation, such as I do not get any exceptions, if I just switch the subsets.

[Till Schäfer]

closing as invalid, as it is not reprocucible with the given information.