Abstract
Refactoring denotes the activity of improving the structure of software by applying a series of transformations without affecting its externally observable behavior. Refactoring has been applied extensively at the source code level. In the context of model-driven software engineering, refactoring has to be applied consistently to both structural and behavioral models. In this paper, we present tool support for model refactoring in ModGraph, a tool which employs Ecore class diagrams for structural modeling and graph transformation rules for declarative behavioral modeling. A refactoring transformation restructures the structural model — an Ecore class diagram — and propagates the changes consistently to the behavioral model — a set of graph transformation rules. Since the refactoring transformations are implemented with graph transformation rules, ModGraph supports model refactoring both for and with graph transformation rules.
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