JSF phase listener that is responsible for managing a FlowExecution object representing an active user conversation so that other JSF artifacts that execute in different phases of the JSF lifecycle may have access to it.

This phase listener implements the following algorithm:

• On BEFORE_RESTORE_VIEW, restore the FlowExecution the user is participating in if a call to extractFlowExecutionKey(ExternalContext) returns a submitted flow execution identifier. Place the restored flow execution in a holder that other JSF artifacts such as VariableResolvers, PropertyResolvers, and NavigationHandlers may access during the request lifecycle.
• On BEFORE_RENDER_RESPONSE, if a flow execution was restored in the RESTORE_VIEW phase generate a new key for identifying the updated execution within a the selected FlowExecutionRepository . Expose managed flow execution attributes to the views before rendering.
• On AFTER_RENDER_RESPONSE, if a flow execution was restored in the RESTORE_VIEW phase save the updated execution to the repository using the new key generated in the BEFORE_RENDER_RESPONSE phase.