Interface inheritance for object-oriented service composition based on model driven configuration

In today eCommerce environments, customers have to deal with a wide variety of alternatives, both in terms of service offerings as well as service providers. They risk to be overwhelmed by the complexity of alternatives, thus reducing the usefulness of the experience and consequently the likelihood of transactions. There is an increasing need for new ways to reduce the perceived complexity. Service-oriented computing can help the user cope with this problem. With services, interfaces no longer hide units of code, but provide access to complex functionality equivalent to that of entire conventional applications. We introduce a methodology for extended service composition derived from model-driven configuration and object-oriented systems. By focusing on the concept of interfaces, and applying it to the object-oriented concept of inheritance, we propose an innovative approach to composition that takes into account how the composed services can be recognized or accessed via the composing service. In order to set the stage, we discuss the similarities between Service Oriented Computing, Object-Oriented Configuration and Object-Orientation. In addition, we provide an overview of knowledge-based systems, described as software systems built by capturing the knowledge used by experts, and more specifically object oriented configuration for implementing service composition.

IMS Application Developer's Handbook: Creating and Deploying Innovative IMS Applications

IMS Application Developer Handbook will give a hands-on view of exactly what needs to be done by IMS application developers to write an application and take it "live" on an operator's network. It will offer practical guidance on building innovative applications using the features and capabilities of the IMS network, show how the rapidly changing development environment is impacting on the business models employed in the industry and how existing network solutions can be moved towards IMS. The book will also elaborate on how IMS applies basic VoIP principles and techniques to realise a true mu