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eMoflon::IBeX is an Eclipse-based incremental interpreter for bidirectional graph transformations based on Triple Graph Grammars (TGGs) and unidirectional graph transformations. It uses eMoflon::IBeX UI for the textual rule specification.

This repository contains only the part which is independent from a concrete pattern matcher.

How to develop

  1. Install GraphViz.
  2. Get the latest version of the Eclipse Modeling Tools.
  3. Install Xtext from this update site (or use the Eclipse Marketplace):
  4. Install PlantUML from this update site (or use the Eclipse Marketplace):
  5. Install HiPE from this update site:
  6. Install the EPackage Registration Feature from
  7. Check the encoding for Xtend files.
    • In Eclipse: Go to Window->Preferences->General->Workspace.
    • Change the text file encoding to 'Other: UTF-8'.
  8. (Important!) Set standard git folder to (workspace) relative path, e.g., (Eclipse ->) Window -> Preferences -> Team (or Version Control) -> Git -> Default Repository Folder = ${workspace_loc}\git (for Windows) or ${workspace_loc}/git (for Linux and macOS)
  9. Go to File/Import.../Team/Team Project Set, check URL and enter in and import one of these PSF files:
    For eMoflon including everything:
  10. Execute MWE2
    • Open packages, org.emoflon.ibex.tgg.editor/src/org.moflon.tgg.mosl, and org.emoflon.ibex.tgg.integrate/src/org.emoflon.ibex.tgg.integrate
    • Right-click on GenerateGT.mwe2 in the first package, GenerateTGG.mwe2 in the second, and GenerateIntegrate.mwe2 in the third.
    • Press Run As -> MWE2 Workflow respectively.
  11. Set UTF-8 as file encoding for the development workspace (Window → Preferences → General/Workspace) and manually build all projects by clicking (Project → Clean... → Clean all projects) to trigger code generation (and get rid of errors). Make sure to check Project → Build Automatically.
  12. Set up your runtime and test workspaces by starting a runtime Eclipse workspace from your development workspace:
  13. Execute MWE2
    • Open package /
    • Right-click on GenerateExpress.mwe2
    • Press Run As -> MWE2 Workflow
  14. Inside the runtime workspace, build all projects (Project → Clean... → Clean all projects) to trigger code generation.
    • Hint: It may be required to trigger a full eMoflon build on all projects. Select all projects in Package Explorer and click on the black hammer symbol.
  15. Run the JUnit tests to ensure that all is well by right-clicking one of the Testsuite_*.launch in the Testsuite project and TestsuiteGT.launch in the TestsuiteGT project and start the tests by selecting Run As/JUnit. If everything is set up correctly, all tests should be green.

Running Testsuite_GLPK.launch requires GLPK (see installation step 5).

Running Testsuite_Gurobi.launch requires Gurobi (see installation step 6).

Running Testsuite_CBC.launch requires Google OR tools (see installation step 7).

Testsuite_SAT4J.launch uses the SAT4J (automatically installed, but the slowest option).

How to install

eMoflon::IBeX can be installed via

(Please notice: This section is for installation purpose only. If you already setup your development workspace as described above, this section is irrelevant for you.)