Unexpected Exception

[jasyn]

trying to refactor a this class I get "An unexpected exception occurred while creating a change object. See error log for more details."

in the error log:
Internal Error

Exception Stack Trace:

java.lang.reflect.InvocationTargetException
    at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:423)
    at org.eclipse.ui.internal.WorkbenchWindow$13.run(WorkbenchWindow.java:2157)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2153)
    at org.eclipse.ltk.ui.refactoring.RefactoringWizard.createChange(RefactoringWizard.java:663)
    at org.eclipse.ltk.ui.refactoring.RefactoringWizard.computeUserInputSuccessorPage(RefactoringWizard.java:502)
    at org.eclipse.ltk.ui.refactoring.RefactoringWizard.getStartingPage(RefactoringWizard.java:472)
    at org.eclipse.ltk.internal.ui.refactoring.RefactoringWizardDialog2.createContents(RefactoringWizardDialog2.java:613)
    at org.eclipse.jface.window.Window.create(Window.java:435)
    at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1101)
    at org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation$1.run(RefactoringWizardOpenOperation.java:178)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation.run(RefactoringWizardOpenOperation.java:202)
    at org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation.run(RefactoringWizardOpenOperation.java:122)
    at gr.uom.java.jdeodorant.refactoring.views.TypeChecking$6.run(TypeChecking.java:599)
    at org.eclipse.jface.action.Action.runWithEvent(Action.java:519)
    at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595)
    at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511)
    at org.eclipse.jface.action.ActionContributionItem$6.handleEvent(ActionContributionItem.java:462)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4454)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1388)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3799)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3409)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
Caused by: java.lang.IllegalStateException: source not specified
    at org.eclipse.jdt.core.dom.ASTParser.createAST(ASTParser.java:807)
    at gr.uom.java.jdeodorant.refactoring.manipulators.ReplaceConditionalWithPolymorphism.modifyInheritanceHierarchy(ReplaceConditionalWithPolymorphism.java:271)
    at gr.uom.java.jdeodorant.refactoring.manipulators.ReplaceConditionalWithPolymorphism.apply(ReplaceConditionalWithPolymorphism.java:94)
    at gr.uom.java.jdeodorant.refactoring.manipulators.ReplaceConditionalWithPolymorphism.checkFinalConditions(ReplaceConditionalWithPolymorphism.java:973)
    at org.eclipse.ltk.core.refactoring.CheckConditionsOperation.run(CheckConditionsOperation.java:85)
    at org.eclipse.ltk.core.refactoring.CreateChangeOperation.run(CreateChangeOperation.java:121)
    at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2313)
    at org.eclipse.ltk.internal.ui.refactoring.WorkbenchRunnableAdapter.run(WorkbenchRunnableAdapter.java:87)
    at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122)
Root exception:
java.lang.IllegalStateException: source not specified
    at org.eclipse.jdt.core.dom.ASTParser.createAST(ASTParser.java:807)
    at gr.uom.java.jdeodorant.refactoring.manipulators.ReplaceConditionalWithPolymorphism.modifyInheritanceHierarchy(ReplaceConditionalWithPolymorphism.java:271)
    at gr.uom.java.jdeodorant.refactoring.manipulators.ReplaceConditionalWithPolymorphism.apply(ReplaceConditionalWithPolymorphism.java:94)
    at gr.uom.java.jdeodorant.refactoring.manipulators.ReplaceConditionalWithPolymorphism.checkFinalConditions(ReplaceConditionalWithPolymorphism.java:973)
    at org.eclipse.ltk.core.refactoring.CheckConditionsOperation.run(CheckConditionsOperation.java:85)
    at org.eclipse.ltk.core.refactoring.CreateChangeOperation.run(CreateChangeOperation.java:121)
    at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2313)
    at org.eclipse.ltk.internal.ui.refactoring.WorkbenchRunnableAdapter.run(WorkbenchRunnableAdapter.java:87)
    at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122)

Session Data:

eclipse.buildId=4.4.2.M20150204-1700
java.version=1.8.0_45
java.vendor=Oracle Corporation
BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=pl_PL
Framework arguments:  -product org.eclipse.epp.package.java.product
Command-line arguments:  -os linux -ws gtk -arch x86 -product org.eclipse.epp.package.java.product

[tsantalis]

Thank you for your bug report.
The problem was created because in the example you gave the classes of the inheritance hierarchy belong to the same CompilationUnit (Java file) with the code performing the Runtime Type Identification.
This issue has been fixed and will be included in the next release of JDeodorant.