Courbis, C.; Finkelstein, A.; (2004) Towards an aspect weaving BPEL engine. Presented at: Third AOSD Workshop on Aspects, omponents, and Patterns for Infrastucture Software (ACP4IS), Lancaster, UK.

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Abstract

This position paper proposes the use of dynamic aspects and the visitor design pattern to obtain a highly configurable and extensible BPEL engine. Using these two techniques, the core of this infrastructural software can be customised to meet new requirements and add features such as debugging, execution monitoring, or changing to another Web Service selection policy. Additionally, it can easily be extended to cope with customer-specific BPEL extensions. We propose the use of dynamic aspects not only on the engine itself but also on the workflow in order to tackle the problems of Web Service hot deployment and hot fixes to long running processes. In this way, composing aWeb Service "on-the-fly" means weaving its choreography interface into the workflow.

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