Design And Implementation Of A Service-oriented Workflow System

The traditional workflow system is mainly used in the processing of events, of events for examination and approval, process monitoring. we didn't provide support for the invocation of the service. Can docking with the Enterprise Service Bus(ESB), graphical interface to provide configuration services, through the enterprise service bus service access, provide service support for workflow system, is the need to solve practical problems.Process choreographer tools extension Activiti Designer open source framework, by adding the service properties of existing components servicetask, can add the register of three kinds of services on the Enterprise Service Bus(OSGI, Webservice, Corba services).Enterprise Service Bus(ESB) to maintain the entire network communications, used to register all the nodes on the bus Service and released through the Web Service. Process choreographer tools to draw flow chart with service components, and generate BPMN2 XML file format. Workflow engine and monitor tool is extended Activiti open source framework, load format tool generated BPMN2 XML documents, and to parse the XML file, the flow chart of the component is converted to the corresponding flow chart of the component data structure, service configuration converted to correspond to the WSDL file of the class.Then start a process instance, according to the flow chart of the logical sequence of operation, and generate the corresponding flow chart in a given process node images.Through the actual test cases for a service-oriented workflow system was tested and the test results show that the process choreographer tools correctly programmed with the working process of the three services, workflow engine and flow charts of monitoring tool can run BPMN2 format files, support access to services, implementation services process monitoring.Performance of the system meet the design requirements.