摘要 : The traditional approach to developing middleware platforms is toadopt a “black box” philosophy whereby the platform offers afixed programming model to applications together with fixed per-platformimplementations. In this paper, w... 展开 The traditional approach to developing middleware platforms is toadopt a “black box” philosophy whereby the platform offers afixed programming model to applications together with fixed per-platformimplementations. In this paper, we describe research which is exploringan open approach to the implementation of middleware platforms. Ourmotivation is to accommodate the demanding requirements forquality-of-service (QoS) adaptation as imposed by mobile multimediaapplications. We use an extended CORBA computational model featuring theconcept of explicit open bindings. This provides an architecturalframework for openness and QoS adaptation. The paper concludes byconsidering the more general application of an open systems philosophy;in particular, we introduce the concept of reflective middleware 收起