Lightweight views for your models
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EMF Views

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What is this project about?

Some users only need to see some parts of a model, others have to get the full model extended with data from another model, and others simply access to a combination of information coming from different models. Based on the unquestionable success and usefulness of database views to solve similar problems in databases, EMF Views brings the same concept to the modeling world.


These screencasts provide a smattering of the capabilities of this project. Note that these videos have been recorded with an older version of EMFViews, but they still show the overall principles and capabilities of the approach.

What can you find in this repository?

These are the core plugins:

  • org.atlanmod.emfviews: This is the main component of the tool. It includes the core logic behind viewpoints and views.
  • org.atlanmod.emfviews.virtuallinks: An Ecore-based model of links used to construct viewpoints and views.
  • org.atlanmod.emfviews.virtuallinks.delegator: This package delegates the creation of virtual links to concrete implementations.
  • org.atlanmod.emfviews.virtuallinksepsilondelegate: This project generate virtual links from the Epsilon Comparison Language (ECL).

We have also defined two DSLs, VPDL and MEL, which have accompanying Eclipse plugins for edition:

  • org.atlanmod.emfviews.vpdl: ViewPoint Description Language; useful for creating a viewpoint by filtering multiple metamodels, with a syntax inspired by the SELECT query in SQL.
  • org.atlanmod.emfviews.mel: Metamodel Extension Language; can extend metamodel with new classes, attributes, relations.

The examples folder contains ideas of how to use EMF Views and the DSLs:

  • emfviews-tutorial: Create your first Viewpoint and View.
  • vpdl-tutorial: Define a viewpoint with VPDL.


Clone this repository and build the update site locally with Maven:

$ git clone
$ cd emfviews
$ mvn install

You can then install the plugins by pointing to the generated update site in your local m2 repository.

Alternatively, you can import the projects in Eclipse and launch a "Runtime Eclipse" with all the plugins from the workspace.


Needed to install the following plugins:

  • ATL
  • Epsilon
  • Xtext

Who is behind this project?

This is an Atlanmod project.

The following people have made significant contributions to the project:

Copyright information

This program and the accompanying materials are made available under the terms of the Eclipse Public License 2.0 which is available at

This Source Code may also be made available under the following Secondary Licenses when the conditions for such availability set forth in the Eclipse Public License, v. 2.0 are satisfied: GNU General Public License, version 3 which is available at