With models becoming a common-place in software and systems development, the support of automatic transformations of those models is an important asset to increase the efficiency and improve the quality of the development process. However, the definition of transformations still is quite complex. Several approaches – from more imperative to more declarative styles – have been introduced to supp...

The description of data used for e.g. persisting or transmitting information should be defined in a structured way. The structure itself can therefore be seen as a meta model specifying the data model. Over time a software system evolves and the inherent meta models tend to be unstable. Nevertheless, older formats often have to be supported during transition periods. Previous data models, as be...

Reuseware is an open-source model composition framework for composing models defined in arbitrary Ecore-based languages. In its four years of development, Reuseware has experienced many extensions and refactorings due to the integration of new research results and requirements. One year ago, a redevelopment of Reuseware’s core was started. Thanks to its EMF code generation, Fujaba was introduce...

Reuseware is an open-source model composition framework for composing models defined in arbitrary Ecore-based languages. In its four years of development, Reuseware has experienced many extensions and refactorings due to the integration of new research results and requirements. One year ago, a redevelopment of Reuseware’s core was started. Thanks to its EMF code generation, Fujaba was introduce...

In this paper we discuss the role of modelling and of EMF (Eclipse Modeling Framework) and GMF (Eclipse Graphical Modeling Framework) in the design and development of supports for eLearning applications. A model driven approach to eLearning applications is presented, rooted on the explicit representation of the model of the didactic content, based on a metamodel language expressed in Ecore. Bes...

1 The Object Constraint Language (OCL) is a formal language standardized by the OMG (Object Management Group) that allows the specification of constraints on MOF(Meta Object Facility) or EMF (Eclipse Modeling Framework) Ecore-based models. After about ten years of research and OCL prototyping in the area of using formal methods in practical software engineering, OCL is appreciated by the indust...

Model-driven software development makes developing software faster and less complex by providing a higher abstraction layer than source code. However, since model-driven tools often generate the source code partially or completely from a model, one needs a suitable model to use model-driven approaches. The Eclipse Modeling Framework o ers a meta-metamodel called Ecore, which can be used to crea...

Model-Driven Engineering aims at reducing the cost of system development by raising the level of abstraction at which developers work. Thus, models become the main assets in this paradigm, guiding the development until code for the final application is obtained. However, even though domain-specific, models may become large and complex, becoming cumbersome to edit and manipulate. In this scenari...

Model-Driven Software Engineering (MDSE) aims to provide automated support for the development, maintenance and evolution of software by performing transformations on models. During these transformations model elements are traced from a more abstract model to a more concrete model and vice versa, achieved through meta-modeling. Software development process produces numerous models of complex ap...