Results 181 to 190 of about 10,478 (225)
The WS-policy standard pattern
When using web services, it is important to define in advance policies that will apply to interactions with a given web service. These policies can define requirements such as security protocols to be used, expected degree of security or reliability, or other business rules that apply to the specific web service.
Ola Ajaj, Eduardo B. Fernández
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Enhancing web service selection by QoS-based ontology and WS-policy
The Service Oriented Architecture enables the development of flexible large scale-applications in open environments by dynamically combining Web services. Nevertheless, current techniques fail to address the problem of selecting adequate services to meet service consumer needs.
Sodki Chaari+2 more
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WS-Policy4MASC - A WS-Policy Extension Used in the MASC Middleware
WS-Policy4MASC is a new XML language that we developed for specification of monitoring and control (particularly, adaptation) policies in the Manageable and Adaptable Services Compositions (MASC) middleware. It extends the Web Services Policy Framework (WS-Policy) by defining new types of policy assertions.
Vladimir Tošić+2 more
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Combining WS-Policy and Aspect-Oriented Programming
Web Service technologies offer a successful way for interoperability among applications. However, although current approaches are beginning to address how to specify non-functional capabilities in Web Services at description level, they have so far failed to propose an acceptable method to decouple the named capabilities from Web Service ...
Guadalupe Ortiz, Frank Leymann
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Semantic Annotations for WS-Policy [PDF]
WS-Policy is a standard to express requirements and capabilities in Web service systems. Policies are based on domain-specific assertions. In this paper we present a lightweight approach to semantic annotations of policy assertions. The approach allows matching of requirements and capabilities based not only on the syntactical representation of their ...
Sebastian Speiser
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WS-TemporalPolicy: A WS-Policy Extension for Describing Service Properties with Time Constraints
A Web service has several functional properties (e.g. its operations) and non-functional properties (e.g. quality of service and security parameters). Functional properties are usually static, whereas non-functional properties are often dynamic and thus vary over time. To describe properties with time constraints, the paper introduces WS-TemporalPolicy.
Markus Mathés+2 more
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A Web service is defined as an autonomous unit of application logic that provides either some business functionality or information to other applications through an Internet connection. Web services are based on a set of XML standards such as Simple Object Access Protocol (SOAP), Universal Description, Discovery and Integration (UDDI) and Web Services ...
Patrick C. K. Hung, Guang-Sha Qiu
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Virtualizing Services and Resources with ProBus: The WS-Policy-Aware Service and Resource Bus
A fundamental principle of service oriented architectures is the decoupling of service requesters and service providers to enable late binding of services at deployment time or even dynamic binding of services at runtime.This is important in enterprise settings, where different services that implement business functions in critical business processes ...
Ralph Mietzner+5 more
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