Category Archives: Uncategorized

We’ve moved most of the articles in this blog and added lots more under http://eclipse.org/epsilon/doc/articles/

We’ve just released Epsilon v0.8.9, which includes many improvements and bug fixes, as well as a new task-specific language, Epsilon Flock. Epsilon Flock is a model-to-model transformation language tailored for migrating models following changes to their metamodels. In some cases, specifying … Continue reading →

EuGENia is a front-end for GMF that enables developers to generate a fully functional GMF editor by attaching a few high-level annotations to the Ecore metamodel. The original aim of EuGENia was to lower the entrance barrier for new GMF … Continue reading →

Apart from adding support for managing inconsistent EMF models with HUTN, and fixing several bugs, version 0.8.5 of Epsilon also includes a few new and noteworthy features. Use of = both for assignment and for comparison As EOL builds on … Continue reading →

A model and metamodel are consistent when the metamodel specifies every concept used in the model definition. A metamodel can evolve (be adapted by a developer), which can cause inconsistency. We’ve recently added a tool to Epsilon, the HUTN / … Continue reading →

Test-Driven Development (TDD) is an approach to software development that advocates writing tests before implementation. TDD has many advantages when compared to other forms of development, in which tests are often an after-thought. Proponents argue that TDD produces clean interfaces, … Continue reading →

The Epsilon website already includes several screencasts and examples that demonstrate the tools and languages it provides. The preview release of the Google App Engine for Java has made it possible to go one step further and allow people to … Continue reading →

The EPackage registry (EPackage.Registry.INSTANCE) contains references to all registered ECore EPackages in EMF. To visualise the contents of the registry, we have implemented the following EPackage Registry view. Using this view, one can browse through the EClasses contained in each … Continue reading →

The Epsilon Validation Language (EVL) is a model validation language that provides additional features to OCL, such as guards, constraint dependency management, user interaction, access to Java objects, and the ability to specify a number of fixes for each constraint, … Continue reading →

Last week we released v0.7.1 of our Human-Usable Textual Notation implementation. It’s available as part of Epsilon 0.8.1. In this release, we’ve aligned our implementation more closely to the OMG specification, and added some new features. Here’s a summary of … Continue reading →