On Design Principles for Realizing Adaptive Service Flows with BPEL.

摘要: Web service technology offers a promising approach for realizing enterprise-wide and cross-organizational business applications. With the Business Process Execution Language Services (BPEL, also known as WS-BPEL or BPEL4WS) powerful language process-oriented composition orchestration of services exists. However, BPEL flow specifications tend to be too complex, current engines do not provide flexibility needed cover broad spectrum processes we have deal with in practice. Neither ad-hoc deviations form pre-specified schema (e.g., add move activities single instances) nor propagation changes collection instances been supported by yet. This limits their applicability only well structured, rigid flows. In this paper address fundamental issues, which arise when enriching dynamic change capabilities. We focus on question how such can realized correct consistent manner prerequisites must met context. particular, restrict reasonable subset elements order decide these questions. By offering adaptability controlled reliable way so Service will broaden its application scope significantly.