Concepts and experiments in computational reflection
OOPSLA '87 Conference proceedings on Object-oriented programming systems, languages and applications
Aspect-oriented programming using reflection and metaobject protocols
Communications of the ACM
The Self-Serv Environment for Web Services Composition
IEEE Internet Computing
Flexible Workflow Management in the OPENflow System
EDOC '01 Proceedings of the 5th IEEE International Conference on Enterprise Distributed Object Computing
Partial behavioral reflection: spatial and temporal selection of reification
OOPSLA '03 Proceedings of the 18th annual ACM SIGPLAN conference on Object-oriented programing, systems, languages, and applications
Decentralizing execution of composite web services
OOPSLA '04 Proceedings of the 19th annual ACM SIGPLAN conference on Object-oriented programming, systems, languages, and applications
IEEE Internet Computing
Facilitating the rapid development and scalable orchestration of composite web services
Distributed and Parallel Databases
Design and Evaluation of an Autonomic Workflow Engine
ICAC '05 Proceedings of the Second International Conference on Automatic Computing
Autonomic Execution of Web Service Compositions
ICWS '05 Proceedings of the IEEE International Conference on Web Services
ZenFlow: A Visual Web Service Composition Tool for BPEL4WS
VLHCC '05 Proceedings of the 2005 IEEE Symposium on Visual Languages and Human-Centric Computing
Extending BPEL for Run Time Adaptability
EDOC '05 Proceedings of the Ninth IEEE International EDOC Enterprise Computing Conference
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
E Role-based Decomposition of Business Processes using BPEL
ICWS '06 Proceedings of the IEEE International Conference on Web Services
AO4BPEL: An Aspect-oriented Extension to BPEL
World Wide Web
An aspect-oriented framework for service adaptation
ICSOC'06 Proceedings of the 4th international conference on Service-Oriented Computing
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Web service orchestration is widely spread for the creation of composite web services using standard specifications such as BPEL4WS. The myriad of specifications and aspects that should be considered in orchestrated web services are resulting in increasing complexity. This complexity leads to software infrastructures difficult to maintain with interwoven code involving different aspects such as security, fault tolerance, distribution, etc. In this paper, we present Zen-Flow a reflective BPEL engine that enables to separate the implementation of different aspects among them and from the implementation of the regular orchestration functionality of the BPEL engine. We illustrate its capabilities and performance exercising the reflective interface through a decentralized orchestration use case.