Authors:
Jyotsana Gupta
;
Joey Paquet
and
Serguei A. Mokhov
Affiliation:
Concordia University, Montreal, Quebec, Canada
Keyword(s):
Composite Service, Service Constraint Verification, Service Context.
Abstract:
Owing to advantages such as re-usability of components, broader options for composition requesters and liberty to specialize for component providers, composite services have been extensively researched and significantly enhanced in several respects. Yet, most of the studies undertaken fail to acknowledge that every web service has a limited context in which it can successfully perform its tasks. When used as part of a composition, the restricted context-spaces of all such component services together define the contextual boundaries of the composite service. However, from a thorough review of the existing literature on the subject, we have discovered that no systems have yet been proposed to cater to the specific verification of internal constraints imposed on components of a composite service. In an attempt to address this gap in service composition research, we propose a multi-faceted solution capable, firstly, of automatically constructing context-aware composite web services with
their internal constraints positioned for optimum resource-utilization and, secondly, of validating the generated compositions using the General Intensional Programming SYstem (GIPSY) as a time- and cost-efficient simulation/execution environment.
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