Creating an Xtext project from an Ecore model

In this section, we will implement an Xtext DSL starting from an existing Ecore model, which will represent the structure of AST.

Defining the Ecore model

We assume that we already have an EMF Ecore model for representing schools with students and teachers.

This Ecore model has the following structure:

• SchoolModel: This is the root element. The feature schools is a multi-value containment reference of School objects.

• School: The feature persons is a multi-value containment reference of Person objects.

• Person: This is an abstract class.

• Student is a Person: The registrationNum attribute is an integer, teachers is a multi-value non-containment reference of Teacher objects, that is, a student can refer to several teachers.

• Teacher is a Person.

• Named is an abstract class, which is the base class for School and Person. It contains the string attribute name.

Note

During this section, we will modify this Ecore model. If you want to implement the example...