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Epsilon/HowTo

Quick solutions to common questions related to Epsilon.

How do I get all children of a model element?

Epsilon does not provide a built-in method for this but you can use EObject's eContents() method if you're working with EMF. To get all descendants of an element, something like the following should do the trick: o.asSequence().closure(x | x.eContents()). See https://www.eclipse.org/forums/index.php/t/855628/ for more details.

How do I get the container of a model element?

Epsilon does not provide a built-in method for this but you can use EObject's eConainer() method if you're working with EMF.

How can I use an existing EMF Resource in Epsilon?

To use an existing EMF Resource in your Epsilon program, you should wrap it as an InMemoryEmfModel first.

How can I validate/transform Archi models using Epsilon?

To use Archi (http://www.archimatetool.com/) models within Eclipse, you need to install the Archi plugins from https://github.com/archi-contribs/eclipse-update-site. You can then use Archi models in Epsilon in the same way that you'd use any other EMF-based models.

Where is the metamodel of ETL/EVL etc.?

Epsilon languages do not have Ecore-based metamodels.

How do I enable code-completion/assistance in the Epsilon editors?

Epsilon does not provide support for type-aware code completion as Epsilon languages are dynamically typed. However, ctrl/cmd+space provides a list of previously typed tokens to speed up typing.

How can I embed Epsilon in my Java/Android application?

We provide ready-to-use JARs (without any Eclipse dependencies) that you can use to embed Epsilon in standalone Java/Android applications.

How can I profile Epsilon programs executed through ANT tasks?

To do this, you'll need to add a profile="true" attribute to the task you need to profile.