spacer search

Software Engineering for Service-Oriented Overlay Computers
Software Engineering for Service-Oriented Overlay Computers

Main Menu
Home arrow Project Work

Project work Print

A novel comprehensive and mathematically well-founded approach to the engineering of service-oriented computing was developed within the SENSORIA project, including:

  • An ontology and a prototype modelling language for system modelling over service-oriented architectures (WP1) . The prototype language --- SRML (for Sensoria Reference Modelling Language) --- was developed for modelling service-oriented systems. SRML operates at the higher levels of abstraction of business modelling, i.e. it provides a number of semantic modelling primitives that are independent of the languages and platforms in which services are programmed and executed. In particular, SRML abstracts from the typical mechanisms made available by service-oriented middleware such as sessions and event/message correlation, as well as the brokers that are responsible for the discovery and binding of services. 

  • Service-oriented extensions of UML (WP1) to make the programming language and modelling primitives available to practitioners, together with tools for supporting early prototyping, and analysis of properties and qualities of global services.

  • A set of programming language primitives for services specification and interactions (WP2) with associated process calculi for service overlay computing. This includes primitives for explicitly modelling transactions with compensations, security, performance, resources management, distribution, and context-awareness. The fundamental vehicle to undertake the task is the theory of process calculi and the operational modelling as labelled transition systems, and the associated tools that have been developed for designing, analysing, and experimenting open components interactions.

  • A mathematical basis for combining services (WP5) in order to formalise crucial aspects of service level agreements, to distil service aggregation patterns (negotiations) and to provide a sound software architectural basis for dynamic reconfigurations. This includes a mathematical foundation of the quality of service aspects of service level agreements, a process-algebra based theory of negotiation mechanisms for programming orchestration and choreography of services, and a new constraint-based architectural description language for specifying and analysing architectural styles for self-organising systems.

  • A comprehensive set of techniques and methods for qualitative and quantitative analysis of global services (WP3 and WP4) and their interactions. Particular emphasis is put on guaranteeing service level agreement and quality of services, on ensuring a high level of security and trust for the location-transparent offer of services, on controlling resource usage of mobile services and on verifying behavioural properties of services.

  • A suite of tools and techniques for deploying service-oriented systems (WP6 and WP7) and for re-engineering of legacy software into services. The development environment provides an Eclipse-based customizable IDE that integrates the tools developed and adapted within the scope of the project. Tools are implemented as services and the environment provides a graphical editor for building tool chains of services covering the whole model-driven workflow (development, analysis and deployment, etc. ). In addition, new mechanisms are provided for the transformation of legacy systems into a service-oriented architecture.

  • A model-driven approach for service-oriented software development (WP7) supporting early design testing and continuous formal analysis of quality of service. This includes a novel approach to model transformations based on graph transformation systems, a model-driven development process for service-oriented computing, tools supporting model transformations, iterative analysis and verification processes, and an open lightweight development environment as service-oriented integration platform. A pattern catalog was defined to help software developers chosse appropriate tools and techniques to develop service-oriented  systems.

  • Continuous feedback from industrial partners on the progress of the project through experimental case studies (WP8) which started from the beginning of the project. Industrial case studies focus on three domains: telecommunications, finance and automotive applications. In addition, academic partners provided an e-university case study.

For disseminating and exploiting (WP9, WP10 and WP11) the results of SENSORIA the following channels are used: publications in the best scientific journals and major international conferences, organisation of project workshops and of an information days, exhibitions, summer schools, graduate and postgraduate courses.

The Sensoria Project Website
2005 - 2010