Description Greg Amerson 2011-06-08 10:23:01 EDT

Suppose that you specify a property for a diagram connection label that is @DerivedValue or @ReadOnly.  In the diagram editor, the connection label always allows editing however, in the case of DerivedValue or ReadOnly this operation will fail with an exception like below:

!ENTRY org.eclipse.graphiti.ui 4 0 2011-06-08 00:42:41.859
!MESSAGE GFCommandStack.execute(Command) java.lang.IllegalArgumentException: Cannot write property Label.
!STACK 0
java.lang.IllegalArgumentException: Cannot write property Label.
	at org.eclipse.sapphire.modeling.ModelElement.write(ModelElement.java:408)
	at com.liferay.ide.eclipse.service.core.model.internal.Relationship.write(Relationship.java:243)
	at org.eclipse.sapphire.ui.diagram.editor.DiagramConnectionPart.setLabel(DiagramConnectionPart.java:230)
	at org.eclipse.sapphire.ui.swt.graphiti.features.SapphireDirectEditConnectionFeature.setValue(SapphireDirectEditConnectionFeature.java:71)
	at org.eclipse.graphiti.internal.command.DirectEditingFeatureCommandWithContext.execute(DirectEditingFeatureCommandWithContext.java:81)
	at org.eclipse.graphiti.ui.internal.command.GefCommandWrapper.execute(GefCommandWrapper.java:51)
	at org.eclipse.graphiti.ui.internal.editor.EmfOnGefCommand.execute(EmfOnGefCommand.java:59)
	at org.eclipse.graphiti.internal.command.GFPreparableCommand2.doExecute(GFPreparableCommand2.java:37)
	at org.eclipse.emf.transaction.RecordingCommand.execute(RecordingCommand.java:135)
	at org.eclipse.emf.workspace.EMFCommandOperation.doExecute(EMFCommandOperation.java:119)