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The Computer Journal Advance Access originally published online on September 12, 2007
The Computer Journal 2008 51(4):435-450; doi:10.1093/comjnl/bxm062
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© The Author 2007. Published by Oxford University Press on behalf of The British Computer Society. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Modeling ODP Computational Specifications Using UML

José Raúl Romero1, José M. Troya2 and Antonio Vallecillo2,*

1 Department of Informática y Análisis Numérico, University of Córdoba, Spain
2 Department of Lenguajes y Ciencias de la Computación, University of Málaga, Spain

* Corresponding author: av{at}lcc.uma.es

Received 19 July 2006; revised 2 July 2007

The open distributed processing (ODP) computational viewpoint describes the functionality of a system and its environment in terms of a configuration of objects interacting at interfaces, independently of their distribution. Quality of service (QoS) contracts and service level agreements are an integral part of any computational specification, which are specified in ODP in terms of environment contracts. Up until unified modeling language (UML) version 2, both the lack of precision in the UML definition and the semantic gap between the ODP concepts and the UML constructs hindered its application for ODP computational viewpoint modeling. With the advent of UML 2 the situation has changed, because its semantics have been more precisely defined and it now incorporates a whole new set of concepts more apt for modeling the structure and behavior of distributed systems. In this paper, we explore the benefits provided by the new extension mechanisms of UML for modeling the ODP computational specifications and, in particular, we show how ODP environment contracts can be modeled with this approach.

Key Words: RM-ODP • computational specifications • environment contracts • QoS • UML


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