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1. Workflow terminology diagram

   
   

2. Process service method call

   
   

3. Detailed description of the 6 API interfaces commonly used in process services

   When the process starts, runs to the final end, it is necessary to call the engine service API interface.
   

   1) StartProcess()

   The start process calls this method to generate a process instance, and set the state to the task node after the start node.
   

   2) RunProcessApp()

   This method is called when the process runs, the current task is ended, and the task is distributed to the manager of the next node.
   

   3) JumpProcess()

   Jump to the designated task node, there are pre-designated methods, or dynamic calling methods at runtime.
   

   4) WithdrawProcess()

   The previous node finisher of the current task node finds that the processing is wrong and needs to be cancelled. This method is called to return to the previous node.
   

   5) SendbackProcess()

   The current task manager returns the task to the previous execution node.
   

   6) ReverseProcess()

   After the process ends, it still needs to return. The executor before the end node calls this method, and the state returns to the node before the end.