Specifying Distributed Graph Transformation Systems

Graph transformation systems simplify software development by modeling the system in a visual and declarative language. Despite their expressiveness, they fail to support specifiers in modeling distributed systems. As software projects increasingly demand support for distribution, we aim to fill this gap for graph transformation systems. With our concepts, specifiers can visually specify graph transformations affecting multiple applications simultoniously. Based on this visual specification, the corresponding distribution to the different a pplications is automatically derived. We introduce our concepts in general and demonstrate their applicability by means of an example

RePLEX: A Model-Based Reengineering Tool for PLEX Telecommunication Systems

Maintenance of complex legacy software systems is a challenging task. In the first place, maintenance requires understanding the system. Reverse engineering and reengineering tools, which make the design of the current system available on-line and which support planning and performing changes to the system, are urgently needed. We present a new tool for reengineering telecommunication systems, recovering the current architecture, and extracting state machines reflecting the system behavior. The tool is based on a structure graph of the architecture and allows architectural modifications with according code changes. The modifications are specified as graph transformations using FUJABA enabling the generation of a Java prototype, which is accessible via a GUI based on the Graphical Editor Framework (GEF) plug-in for the Eclipse workbench

E-CARES Project: Reengineering of Telecommunication Systems

Abstract. One important field of application for embedded real-time systems is in the telecommunications industry. In the first phase of the E-CARES reengineering project, we regarded the architecture modeling and the reverse engineering of telecommunication systems. Current work concerns the restructuring of such systems including their re-design and re-implementation. The aim is to provide concepts, languages, methods, and tools to improve the architecture and the real-time performance of the software system. Our reengineering prototype is based on a graph rewriting system by which the underlying application logic is generated