NPE after Split Way - Undo

[akks]

There are still some problems with MultipolygonCache...

Way to achieve NPE:

1. Create multipolygon (or open attached .osm file).
2. Split one of its ways by 'P'.
3. Press Ctrl-Z (UNDO).

---

Build-Date: 2011-12-05 00:16:57
Revision: 4633
Is-Local-Build: true

Identification: JOSM/1.5 (4633 SVN ru)
Memory Usage: 46 MB / 247 MB (17 MB allocated, but free)
Java version: 1.6.0_23, Sun Microsystems Inc., Java HotSpot(TM) Client VM
Operating system: Windows XP
Dataset consistency test: No problems found

Plugin: FastDraw (26986)
Plugin: buildings_tools (26731)
Plugin: reltoolbox (26986)
Plugin: utilsplugin2 (26986)

java.lang.NullPointerException

at org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache.dispatchEvent(MultipolygonCache.java:176)
at org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache.processEvent(MultipolygonCache.java:162)
at org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache.updateMultipolygonsReferringTo(MultipolygonCache.java:149)
at org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache.updateMultipolygonsReferringTo(MultipolygonCache.java:128)
at org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache.updateMultipolygonsReferringTo(MultipolygonCache.java:123)
at org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache.wayNodesChanged(MultipolygonCache.java:214)
at org.openstreetmap.josm.data.osm.event.WayNodesChangedEvent.fire(WayNodesChangedEvent.java:22)
at org.openstreetmap.josm.data.osm.DataSet.fireEventToListeners(DataSet.java:1022)
at org.openstreetmap.josm.data.osm.DataSet.endUpdate(DataSet.java:1001)
at org.openstreetmap.josm.data.UndoRedoHandler.undo(UndoRedoHandler.java:88)
at org.openstreetmap.josm.data.UndoRedoHandler.undo(UndoRedoHandler.java:66)
at org.openstreetmap.josm.actions.UndoAction.actionPerformed(UndoAction.java:34)
at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1639)
at javax.swing.JComponent.processKeyBinding(JComponent.java:2851)
at javax.swing.KeyboardManager.fireBinding(KeyboardManager.java:267)
at javax.swing.KeyboardManager.fireKeyboardAction(KeyboardManager.java:229)
at javax.swing.JComponent.processKeyBindingsForAllComponents(JComponent.java:2928)
at javax.swing.JComponent.processKeyBindings(JComponent.java:2920)
at javax.swing.JComponent.processKeyEvent(JComponent.java:2814)
at java.awt.Component.processEvent(Component.java:6044)
at java.awt.Container.processEvent(Container.java:2041)
at java.awt.Component.dispatchEventImpl(Component.java:4630)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1850)
at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:712)
at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:990)
at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:855)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:676)
at java.awt.Component.dispatchEventImpl(Component.java:4502)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Window.dispatchEventImpl(Window.java:2478)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)