MPatch Preferences page

The framework for MPatches is modular and can be extended with several extensions. Since most extensions are required, default implementations for them are already shipped. The preferences dialog defines the default choice for each extension point (in fact, the framework throws warnings if for some extension points there is no default extension selected).

Please open Window -> Preferences -> EMF Compare -> MPatch:

Preferences page

The important selections for normal use are the first two options. Please see the transformation page for details. The (outdated) design document contains further technical details about the design and how to add extensions.