Abstraction of Transaction Demarcation in Component-Oriented Platforms

ion of Transaction Demarcation in Component-Oriented Platforms Romain Rouvoy and Philippe Merle INRIA Jacquard Project, Laboratoire d’Informatique Fondamentale de Lille, UPRESA 8022 CNRS – U.F.R. I.E.E.A. – Bâtiment M3, Université des Sciences et Technologies de Lille, 59655 Villeneuve d’Ascq Cedex, France, rouvoy, merle @lifl.fr Abstract. Component-oriented middleware becomes the privileged substrate for distributed computing in heterogeneous and open environments. Technically they promote the notion of container as structure to host application components. They transparently take charge of a large set of technical or non-functional services like security or transactions. The transaction service is integrated using a set of transaction demarcation (TD) policies. Nevertheless, they are strongly linked to a specific transactional monitor and they are not often isolated. The main contribution of this paper is to propose a component-based framework to deal with TD policies. Thus, this framework allows one to instantiate several configurations of TD policies with different platforms like EJB, CCM, OSGi, WebServices and several transactional monitors like JTS, OTS, WS-T, BTP, etc. It proposes an extensible abstraction of TD policies. This framework shows that no performance degradation is introduced by the refactoring process. Component-oriented middleware becomes the privileged substrate for distributed computing in heterogeneous and open environments. Technically they promote the notion of container as structure to host application components. They transparently take charge of a large set of technical or non-functional services like security or transactions. The transaction service is integrated using a set of transaction demarcation (TD) policies. Nevertheless, they are strongly linked to a specific transactional monitor and they are not often isolated. The main contribution of this paper is to propose a component-based framework to deal with TD policies. Thus, this framework allows one to instantiate several configurations of TD policies with different platforms like EJB, CCM, OSGi, WebServices and several transactional monitors like JTS, OTS, WS-T, BTP, etc. It proposes an extensible abstraction of TD policies. This framework shows that no performance degradation is introduced by the refactoring process.