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Null pointer exception when opening gerrit panel on a specific project

See original GitHub issue

The fun part is that this happens only for one specific repository. Also, notifications work OK (changes waiting for review popup), but opening gerrit panel hangs the whole app. I am still able to close the window (whole window, not panel itself) without killing the app.

Looks like the error happens here. I suspect that the case is that currentRevision is null and changeInfo.revisions is also null. Or something else, I am not familiar with gerrit API. Even if it is a bug/misconfiguration on gerrit side, it should not cause exceptions here.

Plugin version: 0.9.9.1-146

PyCharm 2016.2.3 Build #PY-162.1967.10, built on September 7, 2016

use Optional.orNull() instead of Optional.or(null)
java.lang.NullPointerException: use Optional.orNull() instead of Optional.or(null)
	at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:229)
	at com.google.common.base.Absent.or(Absent.java:51)
	at com.urswolfer.intellij.plugin.gerrit.SelectedRevisions.get(SelectedRevisions.java:57)
	at com.urswolfer.intellij.plugin.gerrit.ui.GerritSelectRevisionInfoColumn.valueOf(GerritSelectRevisionInfoColumn.java:71)
	at com.urswolfer.intellij.plugin.gerrit.ui.GerritSelectRevisionInfoColumn.valueOf(GerritSelectRevisionInfoColumn.java:53)
	at com.intellij.util.ui.ListTableModel.getValueAt(ListTableModel.java:111)
	at javax.swing.JTable.getValueAt(JTable.java:2717)
	at com.intellij.ui.table.JBTable.calculateRowHeight(JBTable.java:162)
	at com.intellij.ui.table.JBTable.getRowHeight(JBTable.java:141)
	at javax.swing.JTable.getRowHeight(JTable.java:992)
	at javax.swing.JTable.getCellRect(JTable.java:2937)
	at javax.swing.plaf.basic.BasicTableUI.createTableSize(BasicTableUI.java:1694)
	at javax.swing.plaf.basic.BasicTableUI.getPreferredSize(BasicTableUI.java:1733)
	at javax.swing.JComponent.getPreferredSize(JComponent.java:1662)
	at com.intellij.ui.components.JBScrollPane$Layout.layoutContainer(JBScrollPane.java:575)
	at java.awt.Container.layout(Container.java:1510)
	at com.intellij.ui.components.JBScrollPane.layout(JBScrollPane.java:260)
	at java.awt.Container.doLayout(Container.java:1499)
	at java.awt.Container.validateTree(Container.java:1695)
	at java.awt.Container.validate(Container.java:1630)
	at javax.swing.RepaintManager$3.run(RepaintManager.java:711)
	at javax.swing.RepaintManager$3.run(RepaintManager.java:709)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:708)
	at com.intellij.ide.IdeRepaintManager.validateInvalidComponents(IdeRepaintManager.java:85)
	at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1731)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
	at com.intellij.ide.IdeEventQueue.i(IdeEventQueue.java:793)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:629)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:385)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)```

Issue Analytics

State:
Created 7 years ago
Comments:10 (5 by maintainers)

Top GitHub Comments

1reaction

uwolfercommented, Nov 10, 2016

I get this exception report from time to time, but I have not idea how it can be reproduced. It would really help if you would find a way to reproduce it.

0reactions

uwolfercommented, Apr 18, 2017

I have added a workaround which prevents broken UI. The revision column is just empty now when no revisions are available.

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