In this paper we show that some of the evolution tasks in OpenMRS, a health information system, may require the invasive modification of interfaces and implementations in order to offer an appropriate modularization. We introduce a new composition framework in Java that supports the definition of expressive pattern-based invasive compositions. Furthermore, we show that the composition framework allows us to concisely define an evolution scenario of OpenMRS that supports the consolidation of patient data from different remote instances.
ISBN: 978-1-4503-0647-8International audienceIn this paper, we present some of the problems we have found in distributed aspect models and introduce a set of criteria that we consider necessary for a robust distributed aspect system. We outline of a first version of model based on aspects and actors capable of meeting these criteria
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