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Building software from reusable components is considered important in reducing development costs. Object-oriented languages such as C++, Smalltalk and Java, however, are not capable of expressing certain aspects of applications in a reusable way. Software engineers may experience difficulties in composing and reusing applications from components, for(More)
There is now an increasing agreement that aspects are not only an issue at the programming level, but also tend to arise at the requirements analysis and software architecture design. Unfortunately conventional software modeling approaches lack abstractions to support the modular representation of crosscutting concerns in such development stages. Hence,(More)
Software engineers may experience problems in modeling certain aspects while applying object-oriented techniques [4, 10, 11]. Composition-Filters are capable of expressing various different kinds of aspects in a uniform manner. These aspects are, for example, inheritance and delegation [1] and atomic delegation [2], multiple views, dynamic inheritance and(More)
We propose a Software Architecture Reliability Analysis (SARA) approach that benefits from both reliability engineering and scenario-based software architecture analysis to provide an early reliability analysis of the software architecture. SARA makes use of failure scenarios that are prioritized with respect to the user-perception in order to provide a(More)
This paper discusses separation and composition of concerns as a means for improving adaptability of object-oriented programs. Separation of concerns results in a weak coupling of the concerns and as such satisfies the need for increased flexibility and reusability. We will illustrate the separation of concerns mechanism for the conventional object model(More)