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Research and Implementation of Workflow Transaction Processing Based on BPEL

Author: ZhangXiaoZuo
Tutor: HuangYongZhong
School: PLA Information Engineering University
Course: Applied Computer Technology
Keywords: Workflow Transactional Workflows BPEL Compensate ECA rules Exception Handling
CLC: TP311.52
Type: Master's thesis
Year: 2009
Downloads: 74
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Abstract


Can better accomplish the implementation of automation of the business processes using workflow technology , workflow technology to further promote the work flow from theory to practical application . However, the existing workflow model can not provide good Affairs to ensure the normal execution of the workflow process and therefore can not meet the needs of modern business management . How workflow system transaction processing technology , thereby enhancing the stability and reliability of the workflow system , one of the problems to be solved in the current workflow technology research . In this paper, in-depth analysis of advanced transaction model and transaction processing method is characterized by the introduction of transaction processing technology ideas proposed in the existing workflow model . Comprehensive utilization of paper transaction-oriented workflow model and support workflow affairs BPEL ( Business Process Execution Language ) language, designed with good transaction processing capabilities WMBT (Workflow Model Based on Transaction) workflow model . Framing this model the workflow transaction type the formally defined transaction having different properties , and increase the flexibility of transaction processing . The recorded transaction based on the operation of the two - level recovery execution mode , the relaxation of the transaction attribute to some extent , and for different types of transactions , given the transaction fails processing mode , to effectively restore the failure to meet the different needs. Anomalies that have emerged in the process of implementation of the workflow transactions , the paper presents a set of exception handling strategy can effectively solve the workflow execution process predictable and unpredictable anomalies . Designed and implemented based on the transaction in ECA ( Event - Condition - Action ) rules improved recovery algorithm , the algorithm fully consider the process instance and affairs of the different types , using different strategies according to different situations , thus reducing the compensation cost . On the basis of the work , This paper describes the specific method for transaction processing module the WMBT workflow model . Finally, the testing process and gives the results of the analysis . The test results show that the transaction processing module to the transaction and abnormal reasonable to deal effectively to meet the design requirements and objectives .

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