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End User Orchestrations

Vishal Dwivedi, David Garlan and Bradley Schmerl.


2010. Submitted for publication.

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Abstract
Service-orchestrations define how services can be composed together and are widely used to execute applications based on Service Oriented Architectures (SOAs). However, the various special purpose orchestration languages used today require code-level constructs that force the users to provide excessive technical detail. For many SOA domains end-users of these orchestrations have limited technical expertise, and hence these users find it difficult to specify orchestrations in current languages. Additionally, users specifying orchestrations would often like to reason about architectural attributes such as performance, security and composability - capabilities that current languages and tools do not support. In this paper we provide an improved technique for modeling orchestrations that allows users to focus primarily on the functional composition of services that is guided by tool supported domain-specific analyses. We introduce an abstract architectural specification language called SCORE (Simple Compositional ORchestration for End users) that defines the vocabulary of elements that can be used in a service composition. SCORE not only allows users to create correct service orchestrations, but it also removes the need for technical detail, most of which is auto-generated by tool support. We demonstrate the use of our approach to specify service-orchestrations in SORASCS (Service ORiented Architectures for Socio-Cultural Systems), which is a SOA system for the intelligence analysis domain. SORASCS users are analysts, who are involved with domain-specific analysis workflows that are represented using SCORE and executed.

Keywords: Service Composition, Software Architecture.  
    Created: 2010-08-03 10:21:26     Modified: 2010-08-03 16:06:03
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