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The Web services platform is gaining popularity as the technology of choice for integrating applications in diverse and heterogeneous distributed environments, such as the Internet. It is widely recognized that one of the barriers preventing widespread adoption of this technology is a lack of products that support non-functional features of applications, such as security, transactionality and reliability. Supporting such features in a service-oriented environment is more complex than traditional distributed computing environments since such behaviors cannot be assumed by applications, but some persistent representation of the behavior has to be discovered dynamically. WS-Policy has been touted as a possible future standard way to specify these features and associate them with services, but the multitude of related proposals resemble a poorly manufactured jigsaw puzzle more than a coherent vision.This paper clarifies this vision by presenting a working prototype that demonstrates how the quality features can be expressed as service policies using WS-Policy. These policies are enforced by a policy framework that allows dynamic association of such non-functional features with applicat

Author

Nirmal K. Mukhi; Pierluigi Plebani

Publisher

ACM

Published

2004

Language

EN