Nowadays more and more attraction is drawn by the event-based implicit invocation - one of useful architectural patterns, because of its loose coupling between components in the architecture and reactive integration in software systems. Analyzing object-oriented interaction with objects, this paper, based upon the principle of software architecture, presents an approach on event-based object model with Ada exception handler. Consequently it is possible for us to improve, with adding specific architectural patterns, traditional programming languages into architectural description languages.
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