Bug 114491 [refactoring] CCE in NullRefactoringHistory
3.2 M3 test pass I deleted some projects in (Java and Resource) working sets, but not quite sure what action triggered the exception. !ENTRY org.eclipse.core.resources 4 2 2005-11-01 11:29:35.216 !MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.core.resources". !STACK 0 java.lang.ClassCastException: org.eclipse.ltk.internal.core.refactoring.history.RefactoringHistoryService$NullRefactoringHistory at org.eclipse.ltk.internal.core.refactoring.history.RefactoringHistoryService$WorkspaceChangeListener.removeDescriptors(RefactoringHistoryService.java:410) at org.eclipse.ltk.internal.core.refactoring.history.RefactoringHistoryService$WorkspaceChangeListener.resourceChanged(RefactoringHistoryService.java:454) at org.eclipse.core.internal.events.NotificationManager$2.run(NotificationManager.java:276) at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044) at org.eclipse.core.runtime.Platform.run(Platform.java:783) at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:270) at org.eclipse.core.internal.events.NotificationManager.handleEvent(NotificationManager.java:254) at org.eclipse.core.internal.resources.Workspace.broadcastEvent(Workspace.java:201) at org.eclipse.core.internal.resources.Resource.unprotectedDelete(Resource.java:1573) at org.eclipse.core.internal.resources.Resource.delete(Resource.java:670) at org.eclipse.core.internal.resources.Project.delete(Project.java:332) at org.eclipse.ui.actions.DeleteResourceAction.delete(DeleteResourceAction.java:419) at org.eclipse.ui.actions.DeleteResourceAction.delete(DeleteResourceAction.java:395) at org.eclipse.ui.actions.DeleteResourceAction.access$0(DeleteResourceAction.java:385) at org.eclipse.ui.actions.DeleteResourceAction$3.run(DeleteResourceAction.java:502) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1705) at org.eclipse.ui.actions.DeleteResourceAction$2.run(DeleteResourceAction.java:500) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:76)
org.eclipse.ltk.core.refactoring/src/org/eclipse/ltk/internal/core/refactoring/history/RefactoringHistoryService.java
transformer.createArgument((String) entry.getKey(), (String) entry.getValue());
						}
					} finally {
						transformer.endRefactoring();
					}
				}
			}
		} finally {
			transformer.endSession();
		}
		final Object result= transformer.getResult();
		if (result instanceof Node) {
			try {
				final Transformer transform= TransformerFactory.newInstance().newTransformer();
				transform.setOutputProperty(OutputKeys.METHOD, IRefactoringSerializationConstants.OUTPUT_METHOD);
				transform.setOutputProperty(OutputKeys.ENCODING, IRefactoringSerializationConstants.OUTPUT_ENCODING);
				transform.transform(new DOMSource((Node) result), new StreamResult(stream));
			} catch (TransformerConfigurationException exception) {
				throw new CoreException(new Status(IStatus.ERROR, RefactoringCore.ID_PLUGIN, 0, exception.getLocalizedMessage(), exception));
			} catch (TransformerFactoryConfigurationError exception) {
				throw new CoreException(new Status(IStatus.ERROR, RefactoringCore.ID_PLUGIN, 0, exception.getLocalizedMessage(), exception));
			} catch (TransformerException exception) {
				final Throwable throwable= exception.getException();
				if (throwable instanceof IOException)
					throw new CoreException(new Status(IStatus.ERROR, RefactoringCore.ID_PLUGIN, 0, throwable.getLocalizedMessage(), throwable));
				RefactoringCorePlugin.log(exception);
			}
		}
	}
}