Tx-policy
Kanchana Rajaram, Arun Adiththan, Chitra Babu · 2011
In Web services paradigm, whenever a single service cannot meet the requirements of a user, many services need to be composed that can collectively satisfy the user expectations. Existing research focuses on service selection based solely on non-functional properties for composition, whenever there is more than one service provider who is offering services with similar functionality. However, the transaction behavioral aspects of a service, which ensure the reliability of a composite service has not been considered till now. Currently, the transactional properties cannot be represented as a part of service definition. To address this need, it is proposed to specify transactional properties using WS-Policy language and integrate it with the service definition. The transactional requirements of service consumer are matched with transactional policies of service providers and the correct set of services is selected for composition that will result in reliable execution. This approach is experimented with a case study of Scan Report Generation process in health care domain.