Dynamic binding in strongly typed programming languages

Gantenbein, Rex E.

doi:10.1016/0164-1212(91)90086-l

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…At the implementation level, there are programming languages and libraries that provide dynamic linking and binding mechanisms, together with exception handling capabilities [15] [16] [17] [18]. However, systems with built-in adaptation codes are programmed in an ad hoc manner and the adaptation codes are coupled with the target systems, resulting in a lack of flexibility in the adaptation that can be carried out without re-building the target systems.…”

Section: Related Workmentioning

confidence: 99%

A mobile agent approach to dynamic architecture-based software adaptation

Yang

Xian-chun

2006

SIGSOFT Softw. Eng. Notes

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Increasingly, software are required to be ready to adapt itself to the changing environment caused by a wide range of maintenance, evolution and operation problems. Furthermore, in large complex distributed systems and continuous running systems, the traditional approaches to bringing about change require that the system be taken offline temporarily, which is often undesirable due to requirements for high availability. To address this new kind of capability, dynamic software adaptation, which refers to software changes in both structure and behavior without bring it down, is proposed.In this paper, we explore an architecture-based mobile agent approach to dynamic software adaptation. Our goal is to automate the software adaptation on the fly on the basis of explicating and reasoning about architectural knowledge about the running system. For that, we introduce the dynamic software architecture, which means the architecture itself can also be introspected and altered at runtime, to guide and control the adaptation. We use the architectural reflection to observe and control the system architecture, while use the architectural style to ensure the consistency and correctness of the architecture reconfiguration. To handle the adaptation of the running system, mobile agents, which is well suited for complex management issues, is employed. Mobile agents carry self-contained mobile code and act upon running components.The usage of meta-architecture and the mobile agents not only forms an adaptation feedback loop onto the running system, it also separates the concerns among the architectural model, the target system and the facilities use for adaptation. It will simplify the developing, deploying and maintaining of the system, while pose a good basis for enabling the reuse of the adaptation facilities. IntroductionIncreasingly, software are required to be ready to adapt itself to the changing environment caused by a wide range of maintenance, evolution and operation problems, such as supporting run-time software composition, adhering to user requirements, recovering from and preventing faults, and fixing bugs. Moreover, in large complex distributed systems and continuous running systems, like telephone switching systems, banking systems, mobile embedded systems, the traditional approaches to bringing about change require that the systems be brought offline temporarily, which is often undesirable due to requirements for high availability. To address this new kind of capability, dynamic software adaptation, which refers to software changes in both structure and behavior, such as adding, removing or substituting components, without bringing the system down, is proposed [1] [2] [3] [4]. It means to use cost-effective techniques and mechanisms to build systems that reliably and adapt their own behavior dynamically.To meet the need of software adaptation, a considerable knowledge of the specification and architecture of the system is needed, which lead to the architecture-based software adaptation [5] [6] [7]. In architecture-b...

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Section: Related Workmentioning

confidence: 99%

A mobile agent approach to dynamic architecture-based software adaptation

Yang

Xian-chun

2006

SIGSOFT Softw. Eng. Notes

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“…There are a multitude of programming languages and libraries that provide dynamic linking and binding mechanisms, as well as exception handling capabilities (e.g., [6,12,13,18]). Systems of this kind allow self-repair to be programmed on a per-system basis.…”

Section: Related Workmentioning

confidence: 99%

“…Violations of constraints are handled by a repair mechanism (5), which adapts the architecture. Architectural changes are propagated to the running system (6).…”

Section: Overview Of Approachmentioning

confidence: 99%

Using Architectural Style as a Basis for System Self-repair

Cheng

Garlan

Schmerl

et al. 2002

Software Architecture

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Abstract:An increasingly important requirement for software systems is the capability to adapt at run time in order to accommodate varying resources, system errors, and changing requirements. For such self-repairing systems, one of the hard problems is determining when a change is needed, and knowing what kind of adaptation is required. Recently several researchers have explored the possibility of using architectural models as a basis for run time monitoring, error detection, and repair. Each of these efforts, however, has demonstrated the feasibility of using architectural models in the context of a specific style. In this paper we show how to generalize these solutions by making architectural style a parameter in the monitoring/repair framework and its supporting infrastructure. The value of this generalization is that it allows one to tailor monitoring/repair mechanisms to match both the properties of interest (such as performance or security), and the available operators for run time adaptation.

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