Exception after deleting an empty relation

[anonymous]

What steps will reproduce the problem?

1. wanted to exchange a multipolygon of houses with single houses and therefore deleted relation
2. deleted inner and then outer
3. usually there shouldn't be anything left over, but this time there was an empty relation
4. aborted saving and deleted the empty relation

What is the expected result?
empty relation is deleted without a problem

What happens instead?
an exception

Please provide any additional information below. Attach a screenshot if
possible.

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2013-07-10 01:34:22
Last Changed Author: stoecker
Revision: 6060
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2013-07-08 22:13:24 +0200 (Mon, 08 Jul 2013)
Last Changed Rev: 6060

Identification: JOSM/1.5 (6060 de) Linux openSUSE 12.3 (x86_64)
Memory Usage: 166 MB / 1768 MB (33 MB allocated, but free)
Java version: 1.7.0_21, Oracle Corporation, OpenJDK 64-Bit Server VM
VM arguments: [-Xbootclasspath/a:/usr/share/icedtea-web/netx.jar:/usr/share/java/js.jar, -Xms8m, -Dicedtea-web.bin.name=javaws, -Dicedtea-web.bin.location=/usr/bin/javaws]
Dataset consistency test: No problems found

Plugin: FixAddresses (29661)
Plugin: HouseNumberTaggingTool (29487)
Plugin: geochat (29592)
Plugin: merge-overlap (29645)
Plugin: terracer (29623)
Plugin: turnrestrictions (29435)
Plugin: waypoint_search (29435)
Plugin: wikipedia (29523)

java.util.NoSuchElementException
	at java.util.Collections$EmptyIterator.next(Collections.java:3006)
	at org.openstreetmap.josm.data.validation.tests.RelationChecker.isFixable(RelationChecker.java:232)
	at org.openstreetmap.josm.data.validation.TestError.isFixable(TestError.java:235)
	at org.openstreetmap.josm.gui.dialogs.ValidatorDialog.setSelection(ValidatorDialog.java:378)
	at org.openstreetmap.josm.gui.dialogs.ValidatorDialog.access$700(ValidatorDialog.java:65)
	at org.openstreetmap.josm.gui.dialogs.ValidatorDialog$SelectionWatch.valueChanged(ValidatorDialog.java:510)
	at javax.swing.JTree.fireValueChanged(JTree.java:2919)
	at javax.swing.JTree$TreeSelectionRedirector.valueChanged(JTree.java:3378)
	at javax.swing.tree.DefaultTreeSelectionModel.fireValueChanged(DefaultTreeSelectionModel.java:634)
	at javax.swing.tree.DefaultTreeSelectionModel.notifyPathChange(DefaultTreeSelectionModel.java:1092)
	at javax.swing.tree.DefaultTreeSelectionModel.addSelectionPaths(DefaultTreeSelectionModel.java:411)
	at javax.swing.tree.DefaultTreeSelectionModel.addSelectionPath(DefaultTreeSelectionModel.java:309)
	at javax.swing.JTree.addSelectionPath(JTree.java:1738)
	at javax.swing.JTree.setExpandedState(JTree.java:3596)
	at javax.swing.JTree.collapsePath(JTree.java:2229)
	at javax.swing.plaf.basic.BasicTreeUI.toggleExpandState(BasicTreeUI.java:2276)
	at javax.swing.plaf.basic.BasicTreeUI.handleExpandControlClick(BasicTreeUI.java:2252)
	at javax.swing.plaf.basic.BasicTreeUI.checkForClickInExpandControl(BasicTreeUI.java:2210)
	at javax.swing.plaf.basic.BasicTreeUI$Handler.handleSelection(BasicTreeUI.java:3579)
	at javax.swing.plaf.basic.BasicTreeUI$Handler.mousePressed(BasicTreeUI.java:3527)
	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:279)
	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:279)
	at java.awt.Component.processMouseEvent(Component.java:6502)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3312)
	at java.awt.Component.processEvent(Component.java:6270)
	at java.awt.Container.processEvent(Container.java:2229)
	at java.awt.Component.dispatchEventImpl(Component.java:4861)
	at java.awt.Container.dispatchEventImpl(Container.java:2287)
	at java.awt.Component.dispatchEvent(Component.java:4687)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4489)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
	at java.awt.Container.dispatchEventImpl(Container.java:2273)
	at java.awt.Window.dispatchEventImpl(Window.java:2719)
	at java.awt.Component.dispatchEvent(Component.java:4687)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:729)
	at java.awt.EventQueue.access$200(EventQueue.java:103)
	at java.awt.EventQueue$3.run(EventQueue.java:688)
	at java.awt.EventQueue$3.run(EventQueue.java:686)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
	at java.awt.EventQueue$4.run(EventQueue.java:702)
	at java.awt.EventQueue$4.run(EventQueue.java:700)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:699)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

[skyper]

Could you please tell us the id of the relation and/or attach s small example .osm file to reproduce ?

Thanks

[Don-vip]

Problem looks similar to #8822

[gorgonz@…]

i'm not exactly here, but i guess, that it was in changeset ​http://www.openstreetmap.org/browse/changeset/16905015 and there are 3 candidates. hmm, think it was 93462.

[Don-vip]

In 6062/josm:

fix #8866 - NoSuchElementException after deleting an empty relation