Dynamically Composing Web Services from On-line Sources
نویسندگان
چکیده
The power of web services can only be realized when web services are utilized as building blocks to dynamically compose new web services. The Building Finder application is an example application that integrates information from several web services by modeling the web services as information sources in a mediator-based architecture. The paper also describes a mediator framework to dynamically compose new web services, similar to the Building Finder, by generating an integration plan to integrate information from the existing web services.
منابع مشابه
Dynamic Access Control Policies and Web-Service Composition
Service composition is a fundamental technique for developing web-service applications. In general, a single service is not enough to achieve the user’s goal, rather several services, often from different providers, are composed dynamically to satisfy a request. Ensuring security in such a system is challenging and not supported by most of the security frameworks proposed in current literature....
متن کاملActual Paradigms of Distributed Software Development: Services and Self Organization
of a Keynote Speech. State-of-the-art development of distributed software systems is, among other software development techniques, fundamentally based on the paradigm of distributed “software services”. Such services may already exist or may be newly developed for specific application purposes. They are able to interact – also in open and heterogeneous distributed software environments – based ...
متن کاملConceptual modelling of adaptive web services based on high-level Petri nets
Service technology geared by its SOA architecture and enabling Web services is rapidly gaining in maturity and acceptance. Consequently, most worldwide (private and corporate) cross-organizations are embracing this paradigm by publishing, requesting and composing their businesses and applications in the form of (web-)services. Nevertheless, to face harsh competitiveness such serviceoriented cro...
متن کاملSecuring Web Service Compositions: Formalizing Authorization Policies Using Event Calculus
Service composition is a fundamental technique for developing Web services based applications. As autonomous services are invoked through protocols, issues such as security must be taken into account. Thus, ensuring security in such a system is challenging and not supported by most of the security frameworks proposed in current literature. This paper presents a formal model for composing securi...
متن کاملProteus: A System for Dynamically Composing and Intelligently Executing Web Services
Many organizations envision web services as an enabling component of Internet-scale computing. A final vision of web services is to realize a dynamic environment that identifies, composes and executes web services in response to a query. This vision shapes the design and implementation of Proteus. In addition to describing Proteus’ novel components, this paper outlines its initial system design.
متن کامل