Download Agent-Based Service-Oriented Computing by Nathan Griffiths PDF

By Nathan Griffiths

ISBN-10: 1849960402

ISBN-13: 9781849960403

Distributed software program structures have gotten evermore conventional, and we more and more wish them to function in heterogeneous, dynamic, and open environments. Service-oriented computing (SOC) has emerged over contemporary years as a winning strategy for development and holding such platforms. even if, because the environments within which we require platforms to function develop into extra advanced, we require software program elements to have expanding levels of flexibleness, autonomy, and intelligence. Agent-based platforms clearly supplement SOC via supplying the intelligence and reasoning features which are needed.

The integration of brokers and SOC is a large and energetic examine sector. This booklet is a suite of chapters from specialists within the box, that offers an summary of the state of the art in most cases components of present examine, and identifies most probably destiny instructions. Researchers, scholars and practitioners will locate this ebook an invaluable perception into the present cutting-edge. The ebook additionally features a basic advent the fundamental notions of SOC for readers who're strange with the approach.

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Sample text

86] present a scalable, high performance environment for web service publication and discovery among multiple registries. Using an ontology-based approach, registries are organised into domains, so that web services can be classified using those domains. A semantic approach to the publication and discovery of web services is used, and it is claimed that this is appropriate for systems containing 2 Service Advertisement and Discovery 31 large numbers of registries. METEOR-S is an architecture which supports this environment and an implementation has been tested [86].

Thus the role of the service broker and its registry is central to the current model of service oriented computing [28]. Discovery Selection Composition Fig. 2) of the services execution workflow identifies the activity of service discovery as the first step, followed by the other processes including service selection and composition. Some or all of these steps can be performed offline or at runtime. Service discovery deals with finding services that meet a specified description, whereas selection deals with “choosing appropriate services from among those that are discovered for the given description” [80].

2 WSDL WSDL (Web Service Description Language) formally provides a model for describing interfaces for web services [75, 86, 89]. A WSDL description specifies the location of the service, the operations for invoking and consuming the web service, and supports binding for defining message formats and protocol details. The following is a typical structure of a WSDL document, which is cited from W3C School [88]: definition of types definition of a message definition of a operation definition of a binding definition of a port A typical WSDL document contains the following elements.

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Agent-Based Service-Oriented Computing by Nathan Griffiths


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