Cláudio Sant'Anna

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Software product lines (SPLs) enable modular, large-scale reuse through a software architecture addressing multiple core and varying features. To reap the benefits of SPLs, their designs need to be stable. Design stability encompasses the sustenance of the product line's modularity properties in the presence of changes to both the core and varying features.(More)
Design patterns offer flexible solutions to common problems in software development. Recent studies have shown that several design patterns involve crosscutting concerns. Unfortunately, object-oriented (OO) abstractions are often not able to modularize those crosscutting concerns, which in turn decrease the system reusability and maintainability. Hence, it(More)
An architectural aspect is a concern that cuts across architecture modularity units and cannot be effectively modularized using the given abstractions of conventional Architecture Description Languages (ADLs). Dealing with crosscutting concerns is not a trivial task since they affect each other and the base architectural decomposition in multiple(More)
One of the main promises of aspect-oriented programming (AOP) is to promote improved modularization of crosscutting concerns, thereby enhancing the software stability in the presence of changes. This paper presents a quantitative study that assesses the positive and negative effects of AOP on typical maintenance activities of a Web information system. The(More)
Although one of the main promises of aspect-oriented (AO) programming techniques is to promote better software changeability than objectoriented (OO) techniques, there is no empirical evidence on their efficacy to prolong design stability in realistic development scenarios. For instance, no investigation has been performed on the effectiveness of AO(More)
Software product lines (SPLs) enable modular, large-scale reuse through a software architecture addressing multiple core and varying features. To reap the benefits of SPLs, their designs need to be stable. Design stability encompasses the sustenance of the product line's modularity properties in the presence of changes to both the core and varying features.(More)
Pattern composition has been shown as a challenge to applying design patterns in real software systems. One of the main problems is that multiple design patterns in a system are not limited to affect only the application concerns. They also crosscut each other in multiple heterogeneous ways so that their separation and composition are far from being(More)
Much of the complexity of software architecture design is derived from the inadequate modularization of key broadly-scoped concerns, such as exception handling, distribution, and persistence. However, conventional architecture metrics are not sensitive to the driving architectural concerns, thereby leading a number of false positives and false negatives in(More)
Aspect-oriented (AO) techniques are emerging as promising approaches to enhance the representation of crosscutting concerns throughout the software lifecycle. This includes new AO specification mechanisms for the architectural design stage that is at the heart of the software process. However, existing modelling languages have failed short to provide simple(More)