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Bug 197500 - NullPointerException at org.openide.explorer.view.OutlineView.synchronizeSelectedNodes
Summary: NullPointerException at org.openide.explorer.view.OutlineView.synchronizeSele...
Status: RESOLVED FIXED
Alias: None
Product: platform
Classification: Unclassified
Component: Outline&TreeTable (show other bugs)
Version: 6.x
Hardware: All All
: P3 normal (vote)
Assignee: Martin Entlicher
URL:
Keywords: THREAD
Depends on:
Blocks:
 
Reported: 2011-04-06 16:24 UTC by mklaehn
Modified: 2011-04-08 08:51 UTC (History)
0 users

See Also:
Issue Type: DEFECT
Exception Reporter: 178209

Attachments
stacktrace (3.11 KB, text/plain)
2011-04-06 16:24 UTC, mklaehn 		Details
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Description mklaehn 2011-04-06 16:24:02 UTC 
Build: NetBeans Platform Dev (Build nbms-and-javadoc-6946-on-20110330)
VM: Java HotSpot(TM) Server VM, 19.1-b02, Java(TM) SE Runtime Environment, 1.6.0_24-b07
OS: Windows 2000

User Comments:
mklaehn: debigging and switching to output window




Stacktrace: 
java.lang.NullPointerException
   at org.openide.explorer.view.OutlineView.synchronizeSelectedNodes(OutlineView.java:721)
   at org.openide.explorer.view.OutlineView$TableSelectionListener.propertyChange(OutlineView.java:1162)
   at org.openide.util.WeakListenerImpl$PropertyChange.propertyChange(WeakListenerImpl.java:196)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
   at org.openide.explorer.ExplorerManager$2.run(ExplorerManager.java:868)
Comment 1 mklaehn 2011-04-06 16:24:06 UTC 
Created attachment 107561 [details]
stacktrace
Comment 2 Martin Entlicher 2011-04-07 13:46:02 UTC 
A threading issue, filed manager is changed in one thread and accessed in another without any synchronization.
Comment 3 Martin Entlicher 2011-04-07 15:24:53 UTC 
Fixed by changeset:   192176:112049ca77a6
http://hg.netbeans.org/main/rev/112049ca77a6
Comment 4 Quality Engineering 2011-04-08 08:51:33 UTC 
Integrated into 'main-golden', will be available in build *201104080400* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
Changeset: http://hg.netbeans.org/main/rev/112049ca77a6
User: mentlicher@netbeans.org
Log: #197500 Assure that manager field is set to null and checked for a null value under a lock.