Description Mikaël Barbero 2011-05-20 04:01:06 EDT

When comparing two local resources (Compare > With each other menu) and by selecting "complete resourceSet", a ClassCastException occurs when trying to save the resources after one merge operation (a simple updateAttribute).

It appears that in ModelContentMergerViewer#getContents(boolean), the input is a List<?> and not a TypedElementWrapper nor a Resource. The resource is contained in the singleton List<?>

This change works for me:

== before ==

final Resource resource;
if (input instanceof TypedElementWrapper) {
	resource = ((TypedElementWrapper)input).getObject().eResource();
} else {
	resource = (Resource)input;
}

== after ==

final Resource resource;
if (input instanceof TypedElementWrapper) {
	resource = ((TypedElementWrapper)input).getObject().eResource();
} else if (input instanceof List<?>) {
	resource = (Resource)((List<?>)input).get(0);
} else {
	resource = (Resource)input;
}