Showing papers by "Antonio Brogi published in 2010"

Taxonomy-Driven Adaptation of Multi-layer Applications Using Templates

Abstract: Current adaptation approaches mainly work in isolation and cannot be easily integrated to tackle complex adaptation scenarios. The few existing cross-layer adaptation techniques are somewhat inflexible because the adaptation process is predefined and static. In this paper we propose a methodology for the dynamic and flexible adaptation of multi-layer applications. We use events to trigger the process of matching adaptation templates, which expose adaptation logic as BPEL processes. The matching process employs taxonomies of adaptation mismatches to select adaptation templates based on the degree of match between events and adaptation mismatches. We provide support for cross-layer adaptation by allowing templates to be composed either directly, through invocations of WSDL operations or indirectly, through events.

Design and implementation of Sator: A web service aggregator

Abstract: Our long-term objective is to develop a general methodology for deploying (Web) service aggregation and adaptation middleware, capable of suitably overcoming syntactic and behavioral mismatches in view of application integration within and across organizational boundaries.This article focuses on describing the core aggregation process, which generates the workflow of a composite service from a set of service workflows to be aggregated and a data-flow mapping linking service parameters.