Production workflow: concepts and techniques
Production workflow: concepts and techniques
Supporting policy-driven behaviors in web services: experiences and issues
Proceedings of the 2nd international conference on Service oriented computing
Composition of coordinated web services
Proceedings of the 5th ACM/IFIP/USENIX international conference on Middleware
Towards aspect weaving applications
Proceedings of the 27th international conference on Software engineering
Combining WS-Policy and Aspect-Oriented Programming
AICT-ICIW '06 Proceedings of the Advanced Int'l Conference on Telecommunications and Int'l Conference on Internet and Web Applications and Services
Colombo: lightweight middleware for service-oriented computing
IBM Systems Journal
AO4BPEL: An Aspect-oriented Extension to BPEL
World Wide Web
Isolating process-level concerns using padus
BPM'06 Proceedings of the 4th international conference on Business Process Management
Pluggable Framework for Enabling the Execution of Extended BPEL Behavior
Service-Oriented Computing - ICSOC 2007 Workshops
Non-functional concerns in web services: requirements and state of the art analysis
Proceedings of the 12th International Conference on Information Integration and Web-based Applications & Services
An aspect-oriented framework for specification and enforcement of non-functional concerns in WS-BPEL
International Journal of Web and Grid Services
Runtime verification of service-oriented systems: a well-rounded survey
International Journal of Web and Grid Services
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Supporting Quality of Service properties in BPEL processes is essential to enable Web Service based production workflows. In fact, when implementing a Web Service composition with a BPEL process, appropriate means are needed to express and enforce various QoS properties such as security, reliable messaging, and transactions.In this paper, we present a generic and non-proprietary approach to express QoS properties in BPEL processes using policies. This approach uses XPath, WS-Policy, and the external policy attachment mechanism of WS-PolicyAttachment to enable a separate and non-intrusive specification of both the messaging-level and process-level QoS requirements in BPEL processes. We also present a prototype implementation on top of the Colombo BPEL engine, which supports the enforcement of policies that are attached to BPEL activities.