Hi,

I draged and droped a class onto a class diagram and that worked fine :-) but then I wanted to to do the same onto a sequance diagram and then I got a ClassCastException.

You can find the exception and my installation summary below.

!ENTRY org.eclipse.jface 4 2 2009-08-24 09:22:21.218
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jface".
!STACK 0
java.lang.ClassCastException: org.eclipse.uml2.uml.internal.impl.InteractionImpl cannot be cast to org.eclipse.uml2.uml.Package
at org.topcased.modeler.uml.importer.dnd.Initializer.initializeRootPackage(Initializer.java:178)
at org.topcased.modeler.uml.importer.dnd.UMLDiagramGenerator.intitalize(UMLDiagramGenerator.java:166)
at org.topcased.modeler.uml.importer.dnd.UMLDiagramGenerator.generateUMLDiagram(UMLDiagramGenerator.java:105)
at org.topcased.modeler.uml.importer.dnd.JavaClassFileTransferDropTargetListener.handleDrop(JavaClassFileTransferDropTargetListener.java:92)
at org.eclipse.gef.dnd.AbstractTransferDropTargetListener.drop(AbstractTransferDropTargetListener.java:171)
at org.eclipse.jface.util.DelegatingDropAdapter$3.run(DelegatingDropAdapter.java:211)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.core.runtime.Platform.run(Platform.java:880)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:48)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
at org.eclipse.jface.util.DelegatingDropAdapter.drop(DelegatingDropAdapter.java:209)
at org.eclipse.swt.dnd.DNDListener.handleEvent(DNDListener.java:90)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1027)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1012)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:770)
at org.eclipse.swt.dnd.DropTarget.Drop(DropTarget.java:455)
at org.eclipse.swt.dnd.DropTarget$3.method6(DropTarget.java:257)
at org.eclipse.swt.internal.ole.win32.COMObject.callback6(COMObject.java:119)
at org.eclipse.swt.internal.ole.win32.COM.DoDragDrop(Native Method)
at org.eclipse.swt.dnd.DragSource.drag(DragSource.java:362)
at org.eclipse.swt.dnd.DragSource.access$0(DragSource.java:288)
at org.eclipse.swt.dnd.DragSource$1.handleEvent(DragSource.java:171)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3823)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3422)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2384)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2348)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2200)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:495)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:490)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:386)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
at org.eclipse.equinox.launcher.Main.run(Main.java:1236)



----------------------------------------------------------------------------------------------
*** Date:
24. august 2009 09:26:02 CEST

** System properties:
OS=WindowsXP
OS version=5.1.0
Java version=1.6.0_13


*** MyEclipse details:
MyEclipse Enterprise Workbench
Version: 7.5
Build id: 7.5-20090609


*** Eclipse details:
MyEclipse Enterprise Workbench

Version: 7.5
Build id: 7.5-20090609




Eclipse Plug-in Development Environment

Version: 3.4.2.R342_v20090122-7T7U1E9imVKz-A8Vz-p_jRS
Build id: M20080703-0800


Eclipse Platform

Version: 3.4.2.R342_v20090122-9I96EiWElHi8lheoJKJIvhM3JfVsYbRrgVIWL
Build id: M20090211-1700


Eclipse Graphical Editing Framework GEF

Version: 3.4.2.v20090218-1145-67728084A56B4I233613552
Build id: 200809101400


Eclipse RCP

Version: 3.4.200.R342_v20090122-989JESTEbig-SVaL8UJHcYBr4A63
Build id: M20090211-1700


Eclipse Java Development Tools

Version: 3.4.2.r342_v20081217-7o7tEAoEEDWEm5HTrKn-svO4BbDI
Build id: M20090211-1700




Eclipse startup command=-os
win32
-ws
win32
-arch
x86
-showsplash
-launcher
D:\ProgramFiles\Genuitec\MyEclipse7.5\myeclipse.exe
-name
Myeclipse
--launcher.library
D:\ProgramFiles\Genuitec\MyEclipse7.5\../Common\plugins\org.eclipse.equinox.launcher.win32.win32.x86_1.0.101.R34x_v20080731\eclipse_1115.dll
-startup
D:\ProgramFiles\Genuitec\MyEclipse7.5\../Common\plugins\org.eclipse.equinox.launcher_1.0.101.R34x_v20081125.jar
-clean
-configuration
D:\ProgramFiles\Genuitec\MyEclipse7.5\configuration
-clean
-vm
D:\ProgramFiles\Genuitec\Common\binary\com.sun.java.jdk.win32.x86_1.6.0.013\jre\bin\client\jvm.dll

jrpe,
Sorry to hear you are running into this issue.
I could not replicate the issue at my end. Can you please send me a sample project (with 2 or 3 uml files and java class files) to test and also the steps to reproduce the issue. You can PM the project or send an e-mail to support@myeclipseide.com. Please add a note "ATTN: Joy" in the subject line. Also refer the post link in the e-mail.