Restructuring Paradigm models for the ToolBus architecture : a case study

In this paper we report on an implementation case study regarding the coordination description language Paradigm. We show how to restructure existing Paradigm models to facilitate their efficient implementation on a software coordination architecture like the ToolBus. The restructuring is in part achieved by transforming hierarchical manager-employee relations into symmetric mutual control and by exploiting structural component similarities. On top of this, we introduce the coordinator-weaver-performer pattern, which combines local separation of coordination and computation with a globally endogenous coordination strategy. The approach is illustrated for a generic servicing example