Modularization of Distributed Web Services Using Aspects with Explicit Distribution (AWED)

Navarro, Luis Daniel Benavides; Südholt, Mario; Vanderperren, Wim; Verheecke, Bart

doi:10.1007/11914952_32

Cited by 8 publications

(3 citation statements)

References 28 publications

(29 reference statements)

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“…The policies are used to adapt the service composition via Aspect Viewing. Navarro et al uses aspects to modularize the cross-cutting concerns in composing decentralized web services [19]. Similarly in Padus [20] and Ao4BPEL [21] aspects are used to dynamically adapt the composition.…”

Section: A Bpel-based Integration Approachesmentioning

confidence: 99%

ROAD4WS -- Extending Apache Axis2 for Adaptive Service Compositions

Kapuruge

Colman

King

2011

2011 IEEE 15th International Enterprise Distributed Object Computing Conference

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Abstract-Service oriented architecture plays a prominent role in creating and utilizing business services in enterprise computing environments. The service composers produce value by aggregating lower-level re-usable services, scattered across the internet to create application level services. Web service middleware facilitates in defining service compositions in a comprehensive manner. However, in order to ensure the business viability amidst unpredictably changing business requirements, such compositions may need to adapt during the runtime. Such changes might vary from a minor regulation to a major re-structuring of the IT service composition. However, the complexity of the composition shouldn't increase and the runtime interruptions to the service delivery need to be kept to a minimum. In this paper we introduce ROAD4WS, which is a middleware extension to the popular Apache Axis2 web service engine. The extension brings together the modular adaptive architecture of the Role Oriented Adaptive Design (ROAD) with the web services deployment and consumption capabilities of the Apache Axis2 engine, in order to facilitate deploying adaptive service compositions.

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Section: A Bpel-based Integration Approachesmentioning

confidence: 99%

ROAD4WS -- Extending Apache Axis2 for Adaptive Service Compositions

Kapuruge

Colman

King

2011

2011 IEEE 15th International Enterprise Distributed Object Computing Conference

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“…To address these limitations, distributed AOP has been the focus of several practical developments: JAC [44], DJcutter [39], QuO's ASL [19], ReflexD [57], AWED [4,5], Lasagne [59], as well as a higher-order procedural language with distribution and aspects [55]. These languages introduce new concepts for distributed AOP such as remote pointcut (advice triggered by remote join points), distributed advice (advice executed on a remote host), migration of aspects, asynchronous and synchronous aspects, distributed control flow, etc.…”

Section: Introductionmentioning

confidence: 99%

“…While the formal foundations of aspects have been laid out in the sequential setting [62,15], to date, no theory of distributed aspects has been developed. 5 This paper develops the formal foundations of distributed AOP using a chemical calculus, essentially a variant of the distributed join calculus [22]. The join calculus is a functional name-passing calculus based on the chemical abstract machine and implemented in several mainstream languages like OCaml [24], C# [6] and Scala [26].…”

Section: Introductionmentioning

confidence: 99%

Chemical foundations of distributed aspects

Tabareau

Tanter

2018

Distrib. Comput.

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Distributed applications are challenging to program because they have to deal with a plethora of concerns, including synchronization, locality, replication, security and fault tolerance. Aspect-oriented programming (AOP) is a paradigm that promotes better modularity by providing means to encapsulate crosscutting concerns in entities called aspects. Over the last years, a number of distributed aspect-oriented programming languages and systems have been proposed, illustrating the benefits of AOP in a distributed setting.Chemical calculi are particularly well-suited to formally specify the behavior of concurrent and distributed systems. The join calculus is a functional name-passing calculus, with both distributed and object-oriented extensions. It is used as the basis of concurrency and distribution features in several mainstream languages like C# (Polyphonic C#, now Cω), OCaml (JoCaml), and Scala Joins. Unsurprisingly, practical programming in the join calculus also suffers from modularity issues when dealing with crosscutting concerns.We propose the Aspect Join Calculus, an aspectoriented and distributed variant of the join calculus that addresses crosscutting and provides a formal foundation for distributed AOP. We develop a minimal aspect join calculus that allows aspects to advise chemical reactions. We show how to deal with causal relations in pointcuts and how to support advanced customizable aspect weaving semantics. We also provide the foun-N. Tabareau

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Modularization of Distributed Web Services Using Aspects with Explicit Distribution (AWED)

Navarro

Südholt

Vanderperren

et al. 2006

On the Move to Meaningful Internet Systems 2006: CoopIS, DOA, GADA, and ODBASE

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Abstract. With the adoption of Web services technology to realize Service Oriented Architectures, the need arises for more flexible and dynamic technologies for the just-in-time integration and composition of services. As the runtime integration, selection and management of services involves a variety of crosscutting concerns, such as error handling, service monitoring, and QoS enforcements, Aspect Oriented Programming (AOP) is useful to modularize such concerns.In this paper we investigate aspect-oriented support for crosscutting concerns of distributed management of web service compositions. We propose to use a distributed AOP approach, Aspects with Explicit Distribution (AWED), to modularize such concerns in a distributed variant of the Web Services Management Layer (WSML). Concretely, we present three contributions. First, we present an extension of the WSML to distributed compositions. Second, we present two extensions to AWED's aspect language which are useful for the modularization of crosscutting concerns of web services: support for chains of (a)synchronous remote advice that communicate through futures, and support for different modes of parameter passing between remote pointcuts and advice. Third, we illustrate our approach by investigating error handling in distributed web compositions.

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Modularization of Distributed Web Services Using Aspects with Explicit Distribution (AWED)

Cited by 8 publications

References 28 publications

ROAD4WS -- Extending Apache Axis2 for Adaptive Service Compositions

ROAD4WS -- Extending Apache Axis2 for Adaptive Service Compositions

Chemical foundations of distributed aspects

Modularization of Distributed Web Services Using Aspects with Explicit Distribution (AWED)

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