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Re: [henshin-user] Creating "same" edge as "forbid" and "create"
Hi Daniel,
thanks for the fast response on this.

1. Thanks for suggesting the workaround. I in fact already used the tree editor, but I could not make the diagram refresh to show the added edge.

2. The error-preserving editor behavior is nice. But in my experience, such features tend to lead to unforeseen problems, as this case shows.
Also, I'm experiencing problems with Undo after such a case. I could not test your fix yet, but maybe you can also have a look if undo/redo works for you.


See the stack trace below:

Best

Joel


!ENTRY org.eclipse.ui 4 0 2016-07-23 15:27:33.379
!MESSAGE index=1, size=1
!STACK 0
org.eclipse.emf.common.util.BasicEList$BasicIndexOutOfBoundsException: index=1, size=1
    at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:346)
    at org.eclipse.emf.ecore.change.impl.ListChangeImpl.process(ListChangeImpl.java:534)
    at org.eclipse.emf.ecore.change.impl.ListChangeImpl.applyAndReverse(ListChangeImpl.java:486)
    at org.eclipse.emf.ecore.change.impl.ChangeDescriptionImpl.preApply(ChangeDescriptionImpl.java:818)
    at org.eclipse.emf.ecore.change.impl.ChangeDescriptionImpl.applyAndReverse(ChangeDescriptionImpl.java:324)
    at org.eclipse.emf.transaction.util.CompositeChangeDescription.applyAndReverse(CompositeChangeDescription.java:149)
    at org.eclipse.emf.workspace.AbstractEMFOperation.doUndo(AbstractEMFOperation.java:695)
    at org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand.doUndo(AbstractTransactionalCommand.java:260)
    at org.eclipse.emf.workspace.AbstractEMFOperation.undo(AbstractEMFOperation.java:370)
    at org.eclipse.gmf.runtime.common.core.command.CompositeCommand.doUndoWithResult(CompositeCommand.java:622)
    at org.eclipse.gmf.runtime.common.core.command.AbstractCommand.undo(AbstractCommand.java:215)
    at org.eclipse.gmf.runtime.common.core.command.CompositeCommand.doUndoWithResult(CompositeCommand.java:622)
    at org.eclipse.gmf.runtime.common.core.command.AbstractCommand.undo(AbstractCommand.java:215)
    at org.eclipse.gmf.runtime.common.core.command.CompositeCommand.doUndoWithResult(CompositeCommand.java:622)
    at org.eclipse.gmf.runtime.common.core.command.AbstractCommand.undo(AbstractCommand.java:215)
    at org.eclipse.core.commands.operations.DefaultOperationHistory.doUndo(DefaultOperationHistory.java:399)
    at org.eclipse.core.commands.operations.DefaultOperationHistory.undo(DefaultOperationHistory.java:1149)
    at org.eclipse.ui.operations.UndoActionHandler.runCommand(UndoActionHandler.java:87)
    at org.eclipse.ui.operations.OperationHistoryActionHandler$1.run(OperationHistoryActionHandler.java:308)
    at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:437)
    at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:353)
    at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:481)
    at org.eclipse.ui.internal.operations.TimeTriggeredProgressMonitorDialog.access$6(TimeTriggeredProgressMonitorDialog.java:1)
    at org.eclipse.ui.internal.operations.TimeTriggeredProgressMonitorDialog$2.run(TimeTriggeredProgressMonitorDialog.java:163)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.operations.TimeTriggeredProgressMonitorDialog.run(TimeTriggeredProgressMonitorDialog.java:176)
    at org.eclipse.ui.operations.OperationHistoryActionHandler.run(OperationHistoryActionHandler.java:323)
    at org.eclipse.gmf.runtime.common.ui.action.actions.global.GlobalUndoAction.doRun(GlobalUndoAction.java:245)
    at org.eclipse.gmf.runtime.common.ui.action.AbstractActionHandler.run(AbstractActionHandler.java:359)
    at org.eclipse.gmf.runtime.common.ui.action.ActionManager.run(ActionManager.java:229)
    at org.eclipse.gmf.runtime.common.ui.action.AbstractActionHandler.runWithEvent(AbstractActionHandler.java:377)
    at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:118)
    at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90)
    at sun.reflect.GeneratedMethodAccessor112.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:54)
    at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:282)
    at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:264)
    at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)
    at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:152)
    at org.eclipse.core.commands.Command.executeWithChecks(Command.java:494)
    at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:488)
    at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210)
    at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.executeCommand(KeyBindingDispatcher.java:286)
    at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.press(KeyBindingDispatcher.java:507)
    at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.processKeyEvent(KeyBindingDispatcher.java:558)
    at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.filterKeySequenceBindings(KeyBindingDispatcher.java:378)
    at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.access$0(KeyBindingDispatcher.java:324)
    at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher$KeyDownFilter.handleEvent(KeyBindingDispatcher.java:86)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1270)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1078)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1103)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1088)
    at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1130)
    at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1126)
    at org.eclipse.swt.widgets.Widget.wmChar(Widget.java:1547)
    at org.eclipse.swt.widgets.Control.WM_CHAR(Control.java:4910)
    at org.eclipse.swt.widgets.Canvas.WM_CHAR(Canvas.java:364)
    at org.eclipse.swt.widgets.Control.windowProc(Control.java:4791)
    at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:359)
    at org.eclipse.swt.widgets.Display.windowProc(Display.java:5102)
    at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
    at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2552)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3814)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:687)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:604)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138)
    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:388)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1519)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1492)



On 23.07.2016 14:33, Daniel Strüber wrote:
Hi Joel,

that's a fascinating edge case:
  • In the graphical editor, an edge between two <<preserve>> nodes is per default set to <<preserve>>. The user can change the edge's action to any alternative value afterwards, for example <<create>>.
  • However, in this specific case, this process leads to a temporary state where a <<preserve>> and <<forbid>> between the node exist at the same time - an illegal state that is recognized and fixed by some clean-up functionality by removing the <<forbid>> edge.

I have committed a fix [1] that addresses this particular edge case: a newly added edge between two <<preserve>> nodes with a <<forbid>> edge between is now set to <<create>> rather than <<preserve>>, which is the only meaningful option in this case. Using this fix, the editor should work in your example as intended.

[1] https://git.eclipse.org/r/#/c/77804/

@ Committers: Can someone check and give a +1?


Apart from using this fix, I see no workaround to this issue when using the graphical editor. But you could still use the tree-based editor to specify the rule as intended.


Best regards,

Daniel



On 23.07.2016 11:23, Joel Greenyer wrote:

Hi all,

I'd like to create two edges between the same nodes that are identical, except that one is "forbid" and the other one "create".

However, the editor does not allow me to create the second edge -- it will always replace a previous "forbid" or "create" edge.



How can I do that?

Thanks

Joel


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-- 
Dr. rer. nat. Daniel Strüber, Dipl.-Inf.
Software Engineering Research Group
Philipps-Universität Marburg, Germany


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henshin-user mailing list
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To change your delivery options, retrieve your password, or unsubscribe from this list, visit
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--
Prof. Dr. Joel Greenyer
Software Engineering for Ubiquitous Applications and Dynamic Interacting Systems
Leibniz Universität Hannover
Welfengarten 1, Room G322 (Main Building), 30167 Hannover, Germany
Phone: +49 511 762 3361
greenyer@xxxxxxxxxxxxxxxxxxx
http://jgreen.de

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