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This page links to more than 80 articles on various aspects of Epsilon. Should you find that an article is outdated, please let us know.

Epsilon Object Language

  • EOL syntax updates: This article summarizes changes in the EOL concrete syntax over time.
  • Extended Properties: This article demonstrates the extended properties mechanism in EOL (and by inheritance, in all languages in Epsilon).
  • Call Java from Epsilon: This article demonstrates how to create Java objects, access their properties and call their methods from Epsilon languages.
  • Running Epsilon from Java: This article demonstrates how to parse and execute Epsilon programs and load models from headless Java applications.
  • Running Epsilon Programs on POJOs: This article demonstrates how to run EOL programs and EGL templates on plain-old Java objects (POJOs).
  • Call Java functional interfaces from Epsilon: This article demonstrates how to call native methods which take functions as their parameter, using lambdas and streams directly from Epsilon using EOL syntax.
  • Profiling Epsilon Programs: This article demonstrates how to profile Epsilon programs using the platform's built-in profiling tools.
  • EOL Interpreter View: This article demonstrates an Eclipse view for running EOL scripts against selected model elements in EMF-based editors.
  • Epsilon Debugger: Demonstrates how to use the Eclipse-based step-by-step debugging support in the Epsilon languages.

Epsilon Validation Language

  • EVL-GMF Integration: This article demonstrates evaluating EVL constraints from within a GMF-based editor.
  • EVL-EMF Validation Integration: This article demonstrates contributing EVL constraints to EMF's validation framework.
  • Parallel Execution: This article explains how to use the parallel module implementations for EOL and rule-based languages like EVL.

Epsilon Generation Language

Epsilon Transformation Language

  • XML to EMF Transformation: This article shows how to transform an XML document into an EMF model using the Epsilon Transformation Language and Epsilon's XML driver

Epsilon and EMF models

Epsilon and UML models

Epsilon and other types of models





Workflow (ANT Tasks)

Development Environments

  • VS Code: This article provides an overview of how you can edit and run Epsilon programs in the VS Code IDE.
  • Sublime: This repository provides a package that adds Epsilon syntax highlighting capabilities to the Sublime editor.

Human-Usable Textual Notation

Teaching Material

  • MDE Exercises: This article provides a number of exercises which enable you to test your knowledge on MDE, EMF and Epsilon.
  • Epsilon Playground: The Epsilon Playground is a web application for fiddling with metamodelling, modelling and automated model management using Emfatic, Flexmi and Epsilon's languages.

Technical Support

  • Troubleshooting: A list of common issues that (particularly new) users of Epsilon tend to run into.
  • Constructing a helpful minimal example: From time to time, you may run into a problem when using Epsilon or find a bug. This article describes how to construct a minimal example that we can use to reproduce the problem on our machine.

Extending Epsilon


Epsilon Developers