016004 Software Engineering for Service-oriented Overlay Computers

Integrated Project funded by the European Community under the " Information Society Technologies " Programme (2002—2006) Executive Summary In this document, we present model transformation techniques used in a methodology for the evolution of software towards new architectural styles. This methodology is being implemented to support the migration to Service-Oriented Architectures but is not restricted to that purpose. In our approach, we represent source code as graphs. These are compliant to a metamodel based on the source and target architectural styles. Prior to its representation, the source code is subject to a preparatory step of semi-automatic code annotation according to the contribution of each of its parts in the target architectural style. This enables the use of graph transformation rules on metamodel instances to describe the transformation. Using this technique, it is possible to automate the execution of the transformation at model level. This document first describes the overall methodology and then focuses on its model transformation part. We also discuss the implementation of a prototype based on an existing transformation tool and report on a small example.