| In order to take full advantage of existing enterprise IT resources, integrate the island application of computer in enterprise, and in the direction of collaborative development, lower management costs and maximizes effectiveness, many enterprises have constructed their own work flow management system. These systems are inadequate; they can handle specific tasks such as XPDL (XML Process Definition Language) or BPEL (Business Process Execution Language) model. not dealing with these two models; a specific format process can not be transplanted to another kind of business process work flow platform; and the model can not interoperate between them.In view of the inadequacy of existing workflow system, based on the analysis of the XPDL and BPEL process structure characteristics, process control flow characteristics and the characteristics of the data flow process, Workflow Model Interoperation System advances a set of algorithms of workflow model interoperability, and implements the transformation of XPDL process into BPEL process and vice versa."Workflow Model Interoperability" has become a prototype system, which absorbed the theory and methodology of the study. In the transformation of XPDL process into BPEL process, it first analysis the various activities and transitions in XPDL, and get the result of Map-like structure of XPDL, it is expressed with adjacency matrix, then scans the adjacency matrix. It use stack to identify the structure of block, then calls the block structure conversion module to complete the transformation. Finally, it calls the BPEL code generation module to get the result of BPEL process. In the transformation of BPEL process into XPDL process, by the use of BPEL Process Analyzer, it analysis the structure element of BPEL process and then transform it to get the result of XPDL process.Test results show that the system can achieve a good transformation between the model XPDL and BPEL, and the speed of transformation is very fast。... |
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