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Proceedings of the First European Workshop on Object-Orientation and Web Services

Web Services are evolving beyond their SOAP, WSDL, and UDDI roots toward being able to solve significant real-world integration problems. Developers of Web Services systems are currently working on new generations systems that incorporate security, transactions, orchestration and choreography, grid computing capabilities, business documents and processes, and simplified integration with existing middleware systems. Current economic issues continue to force consolidation and reduction in enterprise computing resources, which is resulting in developers discovering that Web Services can provide the foundation engineering and realisation of complex computing systems.

The question of how Web Services could and should change system and solution development is very much open. Are Web Services just about standards, or do they imply a new conceptual framework for engineering and development? Similarly open is the question of how requirements coming from system and solution development could and should make Web Services evolve. In particular, methodologies as well as technologies based on the object-oriented conceptual framework are an established reality. How do Web Services and object-orientation relate? How can Web Services leverage the experience built into current object-oriented practices?

The overall theme of the workshop is the relation between Web Services and object orientation. Such relation can be explored from different perspectives, ranging from system modelling and engineering to system development, management, maintenance, and evolution. Aspects of particular interest are the modularisation of a system into components and the (possibly cross-domain) composition and orchestration of different modules. Components and composition are closely connected with the issue of reuse, and an important thread of discussion within the workshop will address the way in which Web Services impact reuse.

The objective of the workshop is twofold: assessing the current work on Web Services, and discussing lines of development and possible cooperation. Current work includes research activities as well as practical experiences. The assessment covers an analysis of driving factors and a retrospective on lessons learned. The identification and prioritisation of new lines of research and activity is a key outcome of the workshop. In particular, the intention is to foster future cooperation among the participants.

By: Sanjiva Weerawarana, Giacomo Piccinelli (eds.)

Published in: RA220 in 2003

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