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EMF DiffMerge


EMF Diff/Merge provides a lightweight engine for comparing and merging models using IDs.

  • The emphasis is on scalability and reliability so that large models can be merged consistently.
  • The scope is 2-way and 3-way comparison of arbitrary EMF models. Model elements (EObject) are matched by ID, where an ID can be any "signature" that uniquely identifies the element within its scope: Ecore ID, XML ID, qualified name, location in model tree, etc.
  • A GUI with reusable UI components is also included.
  • The final goal is to have a mature, versatile building block for multiple usages: version control, incremental model transformations, model refactoring, etc.

The EMF Diff/Merge project is part of EMF.