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A simple and effective composition of software services into higher-level composite services is still a very challenging task. Especially in enterprise environments, quality of service (QoS) concerns play a major role when building software systems following the service-oriented architecture (SOA) paradigm. Inthis paper we present a composition approach based on a domain-specific language(DSL) for...
Software as a Service (SaaS) and the possibility to compose Web services provisioned over the Internet are important assets for a service-oriented architecture (SOA). However, the complexity and time for developing and provisioning a composite service is very high and it is generally an error-prone task. In this paper we address these issues by describing a semi-automated "Composition as a Service''...
Systems based on the service-oriented architecture (SOA) paradigm must be able to bind to arbitrary Web services at runtime. However, current service frameworks are predominantly used through precompiled service-access components, which are invariably hard-wired to a specific service provider. The Dynamic and Asynchronous Invocation of Services framework is a message-based service framework that supports...
Service metadata is an important aspect when developing applications following the service-oriented architecture paradigm. Such metadata includes a description of functionalities offered by a service, pre- and postconditions and data that is produced and consumed by a service, as well as a categorization of functionalities in the domain. Providing expressive metadata for services as part of the runtime...
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