a type-safe model of adaptive object groups

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ID: 131081
2012
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Abstract
Services are autonomous, self-describing, technology-neutral software units that can be described, published, discovered, and composed into software applications at runtime. Designing software services and composing services in order to form applications or composite services requires abstractions beyond those found in typical object-oriented programming languages. This paper explores service-oriented abstractions such as service adaptation, discovery, and querying in an object-oriented setting. We develop a formal model of adaptive object-oriented groups which offer services to their environment. These groups fit directly into the object-oriented paradigm in the sense that they can be dynamically created, they have an identity, and they can receive method calls. In contrast to objects, groups are not used for structuring code. A group exports its services through interfaces and relies on objects to implement these services. Objects may join or leave different groups. Groups may dynamically export new interfaces, they support service discovery, and they can be queried at runtime for the interfaces they support. We define an operational semantics and a static type system for this model of adaptive object groups, and show that well-typed programs do not cause method-not-understood errors at runtime.
Reference Key
bjrk2012electronica Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Joakim Bjørk;Dave Clarke;Einar Broch Johnsen;Olaf Owe
Journal ama journal of ethics
Year 2012
DOI
10.4204/EPTCS.91.1
URL
http://arxiv.org/pdf/1208.4630v1
Keywords
computer science mathematicselectronic computers

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