A workflow here defined as a state machine which has single entry and exit entry points

Workflow consists of multiple stages. Each stage performs certain actions and then handover the task with or without a result to the next stage. There are two types of default stages in a workflow : Start Stage and the End Stage. The parallel threads of the workflow always ends in the End Stage.

And example stage...

             /--------> [Stage 1.1] ---- > [Stage 1.2]----------\  
[Start Stage] ---------- > [Stage 2.1] ----- > [Stage 2.2]---- >[End Stage]

While constructing each stage is provided the parent stage and the next stage in the workflow

• Workflow will contain four types of stages apart form default End and Start stage

  • Simple Stage

     ----> [Stage] ---- >  

  • Threaded Stage
    

    /-----> [Thread1] ---
    
    -----> [Stage] ---> [Thread 2] ---> [Aggregator] --- >
    

  • Remote Service Stage
    

    -----> [Stage] ----> [Remote Service Accessor] ---->
    

  • Encapsulated Workflow Stage
    

    /--------> [Stage 1.1] ---- > [Stage 1.2]----------
    
    ------> [Stage] ---> [Workflow Manager] ---> [Start Stage] ---------- > [Stage 2.1] ----- > [Stage 2.2]---- >[End Stage] ---> [Workflow Manager] ----->
    

• Whenever a stage is given the pointer to the End stage then it keeps in itself the track of all the stages from where it will end to this stage.