Show a diagram of the current job chain and its dependencies

Current Situation

• JOE does not provide a graphical representation of job chains and dependencies.

Desired Behavior

• JOE should provide a diagram of the current job chain.
• Selecting a new tab "Diagram" in JOE would display the job chain and its dependencies.
• The Diagram is created using GraphViz. The Graphivz package must be accessble by JOE.

Solution

• Graphviz must be installed (command dot must be available)
• the job chain node form has been devided into three tabs
  • the job chain nodes
  • the file order sources
  • the workflow diagram
• The diagram is shown in the job chain main form and in a tab at the job chain node form
• The diagram consists
  • The orders assigned to the job chain
  • The file order sources assigned to the job chain
  • The nodes of the job chain
  • The nodes with on_error_setback will have an edge as a self reference
  • The nodes with on_error_suspend will have a label in red fontcolor
  • The edges state->next state, state-on_return_code, state->error_state, file_order_source->state
  • Please note
    • When a node has on_return_codes, these will be shown in the diagram
    • When a node is missing, it will be show in gray
    • The diagram will be shown as "fit to screen". Please use the context menue to show the diagram in full size
    • You also can disable the showing of the error nodes
    • The files with the generated dot input and the the picture file will be stored in the same directory the job chain is located.
    • You can add user edge from state to state:100
    • Edges to error nodes are dotted
    • Edges from nodes to nodes are solid
    • The diagram shows the applied version of the job chain (not the saved version)