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As more and more component-based systems (CBS) run in the open and dynamic Internet, it is very important to establish trust between clients and CBS. One of the key mechanisms to establish trust among different platforms in an open and dynamic environment is remote attestation, which allows a platform to vouch for its trust-related characteristics to a remote challenger. This paper proposes a novel...
Dynamic reconfiguration support in application servers is a solution to meet the demands for flexible and adaptive component-based applications. However, when an application is reconfigured, its fault-tolerant mechanism should be reconfigured either. This is one of the crucial problems we have to solve before a fault-tolerant application is dynamically reconfigured at runtime. This paper proposes...
With the popularity of Web services and service-oriented architecture (SOA), quality assurance of SOA applications, such as testing, has become a research focus. Programs implemented by business process execution language for Web services (BPEL), which can compose partner Web services into activities, are one popular kind of SOA applications. The unique features of BPEL programs bring new challenges...
Dynamic component updating, which allows a running system to be updated without interrupting its execution, has been recognized as an important requirement for distributed systems. However, most of existing approaches complicate the component development by making the componentpsilas updating logic mixed with its business logic. This paper proposes a flexible and lightweight approach for supporting...
Software architectures are considered the key means to manage the complexity of large-scale systems from the high abstraction levels and system-wide perspectives. The traditional software design methodologies and the emerging architecture design methods still fall short of coping with the architectural complexity and difficulty in practice. The recent research on the architecture design decisions...
API libraries are becoming increasingly popular in modern software industries because these libraries provide various methods and classes for reuse. However, as pointed out by researchers, libraries are typically difficult to use. It is desirable to infer some specifications for libraries so that programmers can learn the correct usages of these libraries. In this paper, we propose an approach to...
Model refactoring is emerging as a desirable means to improve design model by restructuring it while preserving the behavior properties. It applies the concept of refactoring to a higher level of abstraction and makes refactoring more convenient and effective. Model refactoring always arises at design phase, but unfortunately, 7(days) times 24(hours) high availability requires that refactoring takes...
Regression testing, which plays an important role in software maintenance, usually relies on test adequacy criteria to select and prioritize test cases. However, with the wide use and reuse of black-box components, such as reusable class libraries and COTS components, it is challenging to establish test adequacy criteria for testing software systems built on components whose source code is not available...
Software architecture (SA) is the blueprint of the software system and considered as one of the most important artifacts in component based development. The design and analysis of SA can be very complex. Under the inspiration of model-driven development, the design of SA has been no more constrained in one stage. It is a trend to construct multiple SA models in multiple stages during the software...
A component array is a group of component implementations that provide the same functions but have different qualities. At runtime, a component array can adapt to changes of the system and environment by executing different implementations. When developing component arrays, developers have to implement them from the scratch and consider all such things as how to manage component implementations, how...
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