An implementation of a JSF NavigationHandler that provides integration with Spring Web Flow. It delegates handling to the standard NavigationHandler implementation when a navigation request does not pertain to a flow execution.

Specifically, the following navigation handler algorithm is implemented:

• If a flow execution is not currently in progress:
  • If the specified logical outcome is of the form flowId:xxx, look up the corresponding Flow definition with that id and launch a new flow execution in the starting state. Expose information to indicate that this flow is in progress and render the starting ViewSelection .
  • If the specified logical outcome is not of the form flowId:xxx, simply delegate to the standard NavigationHandler implementation and return.
• If a flow execution is currently in progress:
  • Load the reference to the current in-progress flow execution using the submitted _flowExecutionKey parameter.
  • Resume the flow execution by signaling what action outcome (aka event) the user took in the current state.
  • Once state event processing to complete, render the ViewSelection returned.