David Orchard’s scientific contributions

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Publications (8)


Web Services Policy 1.5 - Framework
  • Article
  • Full-text available

January 2007

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66 Reads

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121 Citations

Asir S Vedamuthu

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David Orchard

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Maryann Hondo

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The Web Services Policy 1.5 - Framework provides a general purpose model and corresponding syntax to describe the policies of entities in a Web services-based system. Web Services Policy Framework defines a base set of constructs that can be used and extended by other Web services specifications to describe a broad range of service requirements and capabilities.

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Web Services Coordination (WSCoordination)

October 2003

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525 Reads

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98 Citations

This specification (WS-Coordination) describes an extensible framework for providing protocols that coordinate the actions of distributed applications. Such coordination protocols are used to support a number of applications, including those that need to reach consistent agreement on the outcome of distributed activities. The framework defined in this specification enables an application service to create a context needed to propagate an activity to other services and to register for coordination protocols. The framework enables existing transaction processing, workflow, and other systems for coordination to hide their proprietary protocols and to operate in a heterogeneous environment. Additionally this specification describes a definition of the structure of context and the requirements for propagating context between cooperating services.


Web Services Policy 1.5 - Guidelines for Policy Assertion Authors

13 Reads

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8 Citations

Web Services Policy 1.5 - Guidelines for Policy Assertion Authors is intended to provide guidance for Assertion Authors that will work with the Web Services Policy 1.5 - Framework ( Web Services Policy Framework (p.32) ) and Web Services Policy 1.5 - Attachment (Web Services Policy Attachment (p.33) ) specifications to create domain specific assertions. The focus of this document is to provide best practices and patterns to follow as well as illustrate the care needed in using WS-Policy to achieve the best possible results for interoperability. It is a complementary guide to using the specifications.


Assertions and Protocols for the OASIS Security Assertion Markup Language

347 Reads

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66 Citations

This specification defines the syntax and semantics for XML-encoded assertions about authentication, attributes, and authorization, and for the protocols that convey this information. Status: This is a working draft produced by the Security Services Technical Committee. See the Revision History for details of changes made in this revision.


Citations (8)


... Apart from these methods, SOAP over UDP specification [Gudgin et al., 2004] defines the means of encapsulating SOAP messages into data octets part of a UDP packet. With this specification the SOAP message must be small enough to fit in one UDP packet. ...

Reference:

Mobile hosts in enterprise service integration
SOAP-over-UDP
  • Citing Article
  • September 2004

... It allows to specify a semantic specific domain inherent to a given non-functional aspect. We consider the WS-PolicyDomainSpecific stereotype as a XML schema which aggregates a set of non-functional properties used to express policies (Vedamuthu and al., 2006). Therefore, the PolicyAssertion stereotype representing a non-functional property is considered as an XML schema TopLevelelement. ...

Web Services Policy 1.5 - Guidelines for Policy Assertion Authors

... There is a huge volume of research work related to Web services and NFRs. Specifications dealing specifically with Reliability in the context of Web services are the WS-ReliableMesssaging [19] and WS-Addressing [20]. The WS-ReliableMessaging specification aims at providing for a robust communication framework. ...

Web Services Addressing (WS-Addressing)

... Such expressions can be merged with application-specific requirements as outlined before, to get a consolidated Boolean expression to be used as a query against the DevOps KB. We use the standardized Web Services Policy Framework (WS-Policy) [14] to render expressions as policies and merge such expressions. Finally, merged expressions can be transformed to WS-Policy normal form (basically a disjunctive normal form) to ease the processing of corresponding expressions and their usage for query purposes. ...

Web Services Policy Framework (WS Policy)
  • Citing Article
  • January 2006