# Package org.eclipse.emf.compare.rcp.ui.structuremergeviewer.groups

Interface Summary
IDifferenceGroup: This interface represents an EMF Compare "group" of differences that can be displayed in the structural differences viewer of the UI.
IDifferenceGroupProvider: Instances of this class will be used by EMF Compare in order to provide difference grouping facilities to the structural differences view.
IDifferenceGroupProvider.Descriptor: A descriptor that can create adifference group provider.
IDifferenceGroupProvider.Descriptor.Registry: A registry of `IDifferenceGroupProvider`.
IDifferenceGroupProvider2: Extended interface of `IDifferenceGroupProvider` that gives information on the building status of its groups.
IDifferenceGroupProviderChange: Stores selected `IDifferenceGroupProvider`.

Class Summary
AbstractDifferenceGroupProvider: Abstract implementation of `IDifferenceGroupProvider`.

Enum Summary
IDifferenceGroupProvider.ComparisonType: Type of comparison a `IDifferenceGroupProvider` can handle.