Tools for the Composition of Open Object-Oriented Distributed Systems

TOCOOS - CP94-247

Keywords: distributed systems, object oriented programming, CORBA

Start Date: 1 January 95 / Status: finished / Duration: 24 months

[ participants / contact]

Objectivies and Approach

The project objective is to develop techniques for the construction of inter-ORB (object request broker) gateways. Work will include:

The project will use the Orbix and DOME vendor ORBs to demonstrate its results.

European links: ESPRIT Project COMANDOS (2071).

Progress and Results

Within the project, an architecture for inter-ORB gateways has been developed. The approach has been based on the definition of generic frameworks which allow the instantiation of half-bridges for specific ORB implementations. A gateway consists of a pair of half-bridges communicating via the Internet Inter-Orb Protocol (IIOP). The emerging OMG standards for CORBA 2.0, IIOP and CORBA Services have been analysed and followed. A set of services (including persistence, relationship and event services) and tools for monitoring and visualisation have been produced to support the development and the demonstration of the gateway. The gateway architecture has been validated and demonstrated using the Orbix and DOME ORBs from IONA and Object Oriented Technologies.

Information Dissemination Activities and/or Exploitation

The results are disseminated to the academic and standards communities through use of the world wide web and through a series of publications and presentations at international conferences (a list of publications may be requested from the coordinator). They will be exploited by the EU partners as a part of their commercial operations. Through the project, Eastern European partners will gain access to ORB technology to exploit in their respective domains.


MARI Computer Systems Ltd.
MARI House - Old Town Hall
UK-Tyne & Wear NE8 1HE, UK

EU Partners

MARI Computer Systems Ltd., UK
IONA Technologies Ltd., IRL

Non-EU Partners

ACC Cyfronet, PL
Charles University, CZ


Mr. Richard Lee
Tel: +44 191 402 0191
Fax: +44 191 402 1107

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TOCOOS - CP94-247, May 1997

please address enquiries to the ESPRIT Information Desk

html version of synopsis by Nick Cook