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[news.eclipse.tools.emf] Is it possible that ECoreUtil.Copy() changes an EObject?

Hi all,

I encountered a problem using ECoreUtil.Copy() method. Here are the steps I did:

1. create objA (it contains a hierarchy of containments and EObjects referencing each other)
2. copy to create objB (objB = (cast)ECoreUtil.Copy(objA))
3. serialize both objects to separate files


Now i expect that the two files have exactly identical contents. But they differ in just one line, in which two references of an ordered containment are output vice versa.
I am sure that no problem occurs during serialization as i checked the serialization routine with the same object (i.e. serialize(objA, objA)) and both files were identical. That is, EcoreUtil.Copy() changes contents of objA as its being copied to objB.


Can someone please explain what is the possible problem?

Thanks in advance,
Zardosht