Unable to Select Incomplete Way - NullPointerException

[skorasaurus]

What steps will reproduce the problem?

1. Open an .OSM file (specifically 15.5mb) - ​http://dl.dropbox.com/u/17003223/filtered.osm
2. Select multiple existing nodes in the .osm file that that are neither connected to each other nor to another way in a specific .OSM file.

What is the expected result? I attempt to select multiple nodes that are neither connected to each other nor to another way in a specific .OSM file. and expect to be able to select them and change their properties.

Note: This bug only applies to nodes existing in the .osm file. If I create 2 new nodes in the same .osm file, I am able to change those 2 nodes' properties without any bugs.

Note 2: This .OSM was imported from an extract at geofabrik and I then extracted more data from osmosis. The attached OSM file is the output from osmosis.

What happens instead?

A box stating a bug in josm has occurred along with the following note.

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2011-09-01 01:31:33
Last Changed Author: simon04
Revision: 4390
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2011-08-31 21:41:56 +0200 (Wed, 31 Aug 2011)
Last Changed Rev: 4390

Identification: JOSM/1.5 (4390 en)
Memory Usage: 235 MB / 670 MB (112 MB allocated, but free)
Java version: 1.6.0_20, Sun Microsystems Inc., OpenJDK Server VM
Operating system: Linux
Dataset consistency test: No problems found

Plugin: DirectUpload (26530)
Plugin: ImageWayPoint (26406)
Plugin: buildings_tools (26530)
Plugin: dataimport (26174)
Plugin: ext_tools (26530)
Plugin: openstreetbugs (26530)
Plugin: openvisible (26530)
Plugin: osmarender (26174)
Plugin: photo_geotagging (26530)
Plugin: reltoolbox (26530)
Plugin: restart (26406)
Plugin: reverter (26530)
Plugin: tagging-preset-tester (26406)
Plugin: terracer (26406)
Plugin: undelete (26530)
Plugin: utilsplugin2 (26530)
Plugin: waypoint_search (26406)

java.lang.NullPointerException
	at org.openstreetmap.josm.data.coor.LatLon.greatCircleDistance(LatLon.java:165)
	at org.openstreetmap.josm.data.osm.Way.getLength(Way.java:545)
	at org.openstreetmap.josm.gui.dialogs.SelectionListDialog$SelectionListModel.setJOSMSelection(SelectionListDialog.java:580)
	at org.openstreetmap.josm.gui.dialogs.SelectionListDialog$SelectionListModel.selectionChanged(SelectionListDialog.java:659)
	at org.openstreetmap.josm.data.osm.event.SelectionEventManager.fireEvents(SelectionEventManager.java:78)
	at org.openstreetmap.josm.data.osm.event.SelectionEventManager.access$200(SelectionEventManager.java:20)
	at org.openstreetmap.josm.data.osm.event.SelectionEventManager$1.run(SelectionEventManager.java:85)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:226)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:647)
	at java.awt.EventQueue.access$000(EventQueue.java:96)
	at java.awt.EventQueue$1.run(EventQueue.java:608)
	at java.awt.EventQueue$1.run(EventQueue.java:606)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:617)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)

[bastiK]

I don't get an exception when selecting nodes from that file. Please give detailed instructions (ids of nodes to select) to get the error.

[skorasaurus]

Replying to bastiK:

I don't get an exception when selecting nodes from that file. Please give detailed instructions (ids of nodes to select) to get the error.

Try selecting nodes near the coordinate: -41.5934636, -81.5567828

[bastiK]

The exception is thrown if you try to select an incomplete way. JOSM does not support incomplete ways, I'm not sure, how we should handle this. Easiest solution would be to skip ways with missing nodes when reading the osm file and don't at them to the DataSet in the first place.

[Don-vip]

Ticket #6807 has been marked as a duplicate of this ticket.

[Don-vip]

I've written a patch in ticket #6807, but maybe you're right, ways shouldn't be loaded at all.

[Don-vip]

Ticket #7567 has been marked as a duplicate of this ticket.