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

The Jury is still out: A Comparison of AGG, Fujaba, and PROGRES

Graph transformation languages offer a declarative and visual programming method for software systems with complex data structures. Some of these languages have reached a level of maturity that allows not only conceptual but also practical use. This paper compares the three widespread graph transformation languages AGG, Fujaba, and PROGRES, considering their latest developments. The comparison is three-fold and regards conceptual aspects, language properties, and infrastructure features. Because of the different relevance of these aspects, we do not determine a clear winner but leave it to the reader

Graph-oriented Storage for Fujaba Applications

Fujaba supports the visual modeling of software applications and the generation of according Java code. During its execution, the runtime state of the generated applications can be saved and restored using the CoObRA framework. In this paper, we present the graph-oriented database DRAGOS for the persistent storage as alternative to CoObRA. Due to the extensive functionality of DRAGOS, the database offers the possibility for introducing new language features in the Fujaba modeling language. Furthermore, the usage of DRAGOS supports rapid prototyping of Fujaba specifications based on the UPGRADE framework