Description Andreas Mayer 2010-08-09 12:34:55 EDT

Build Identifier: 20100617-1415

EMF Compare's editor cannot reopen an emfdiff file containing a snapshot that includes a ReferenceOrderChange. A BasicIndexOutOfBoundsException will be thrown at:

EObjectResolvingEList<E>(BasicEList<E>).basicGet(int) line: 369	
ECrossReferenceEList$FeatureIteratorImpl<E>(EContentsEList$FeatureIteratorImpl<E>).hasNext() line: 485	
ECrossReferenceEList$FeatureIteratorImpl<E>(EContentsEList$FeatureIteratorImpl<E>).next() line: 565	
ModelCompareEditorInput$DispatchingCrossReferencer(EcoreUtil$CrossReferencer).handleCrossReference(EObject) line: 1696	
ModelCompareEditorInput$DispatchingCrossReferencer(EcoreUtil$CrossReferencer).crossReference() line: 1672	
ModelCompareEditorInput$DispatchingCrossReferencer.<init>(ModelCompareEditorInput, EObject, ResourceSet, ResourceSet, ResourceSet) line: 262	
ModelCompareEditorInput.resolveAll(ComparisonSnapshot) line: 222	
ModelCompareEditorInput.prepareInput(IProgressMonitor) line: 184	
ModelCompareEditorInput(CompareEditorInput).run(IProgressMonitor) line: 483	
ModalContext$ModalContextThread.run() line: 121	

The exception will be caught by EMF Compare and trigger a non-meaningful error dialog. 

Reproducible: Always

Steps to Reproduce:
The attached demoplugins.zip contains plugin projects for the following simple model and the accompanying editor: 

  class Thing
    name : String

  class OrderedContainer
    elements : Thing {ordered, containment}

I've also attached demo.zip, which contains two instances of the above model to be compared.

1. Run an Eclipse Application with the above plugins + EMF Compare.
2. Configure Eclipse to compare *.orderedmodel with EMF Compare.
3. Import the models from demo.zip and compare them.
4. Save the comparison result as emfdiff and close the compare editor.
5. Open the saved emfdiff file and the error dialog pops up.