org.springframework.webflow.execution
Class FlowExecutionListenerAdapter

java.lang.Object
  org.springframework.webflow.execution.FlowExecutionListenerAdapter

All Implemented Interfaces:

FlowExecutionListener

Direct Known Subclasses:

HibernateFlowExecutionListener, JpaFlowExecutionListener, SecurityFlowExecutionListener

public abstract class FlowExecutionListenerAdapter
extends java.lang.Object
implements FlowExecutionListener

An abstract adapter class for listeners (observers) of flow execution lifecycle events. The methods in this class are empty. This class exists as convenience for creating listener objects; subclass it and override what you need.

Author:

Erwin Vervaet, Keith Donald, Scott Andrews

Constructor Summary

FlowExecutionListenerAdapter()

Method Summary

void	eventSignaled(RequestContext context, Event event) Called when an event is signaled in the current state, but prior to any state transition.
void	exceptionThrown(RequestContext context, FlowExecutionException exception) Called when an exception is thrown during a flow execution, before the exception is handled by any registered handler.
void	paused(RequestContext context) Called when a flow execution is paused, for instance when it is waiting for user input (after event processing).
void	requestProcessed(RequestContext context) Called when a client request has completed processing.
void	requestSubmitted(RequestContext context) Called when any client request is submitted to manipulate this flow execution.
void	resuming(RequestContext context) Called after a flow execution is successfully reactivated after pause (but before event processing).
void	sessionCreating(RequestContext context, FlowDefinition definition) Called to indicate a new flow definition session is about to be created.
void	sessionEnded(RequestContext context, FlowSession session, java.lang.String outcome, AttributeMap<?> output) Called when a flow execution session ends.
void	sessionEnding(RequestContext context, FlowSession session, java.lang.String outcome, MutableAttributeMap<?> output) Called when the active flow execution session has been asked to end but before it has ended.
void	sessionStarted(RequestContext context, FlowSession session) Called after a new flow session has started.
void	sessionStarting(RequestContext context, FlowSession session, MutableAttributeMap<?> input) Called after a new flow session has been created but before it starts.
void	stateEntered(RequestContext context, StateDefinition previousState, StateDefinition newState) Called when a state transitions, after the transition occurred.
void	stateEntering(RequestContext context, StateDefinition state) Called when a state transitions, after the transition is matched but before the transition occurs.
void	transitionExecuting(RequestContext context, TransitionDefinition transition) Called when a transition is matched but before the transition occurs.
void	viewRendered(RequestContext context, View view, StateDefinition viewState) Called after a view has completed rendering.
void	viewRendering(RequestContext context, View view, StateDefinition viewState) Called when a view is about to render in a view-state, before any render actions are executed.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FlowExecutionListenerAdapter

public FlowExecutionListenerAdapter()

Method Detail

requestSubmitted

public void requestSubmitted(RequestContext context)

Description copied from interface: FlowExecutionListener

Called when any client request is submitted to manipulate this flow execution. This call happens before request processing.

Specified by:

requestSubmitted in interface FlowExecutionListener

Parameters:

context - the current flow request context

requestProcessed

public void requestProcessed(RequestContext context)

Description copied from interface: FlowExecutionListener

Called when a client request has completed processing.

Specified by:

requestProcessed in interface FlowExecutionListener

Parameters:

context - the source of the event

sessionCreating

public void sessionCreating(RequestContext context,
                            FlowDefinition definition)

Description copied from interface: FlowExecutionListener

Called to indicate a new flow definition session is about to be created. Called before the session is created. An exception may be thrown from this method to veto the start operation. Any type of runtime exception can be used for this purpose.

Specified by:

sessionCreating in interface FlowExecutionListener

Parameters:

context - the current flow request context

definition - the flow for which a new session is starting

sessionStarting

public void sessionStarting(RequestContext context,
                            FlowSession session,
                            MutableAttributeMap<?> input)

Description copied from interface: FlowExecutionListener

Called after a new flow session has been created but before it starts. Useful for setting arbitrary attributes in the session before the flow starts.

Specified by:

sessionStarting in interface FlowExecutionListener

Parameters:

context - the current flow request context

session - the session that was created

input - a mutable input map - attributes placed in this map are eligible for input mapping by the flow definition at startup

sessionStarted

public void sessionStarted(RequestContext context,
                           FlowSession session)

Description copied from interface: FlowExecutionListener

Called after a new flow session has started. At this point the flow's start state has been entered and any other startup behaviors have been executed.

Specified by:

sessionStarted in interface FlowExecutionListener

Parameters:

context - the current flow request context

session - the session that was started

eventSignaled

public void eventSignaled(RequestContext context,
                          Event event)

Description copied from interface: FlowExecutionListener

Called when an event is signaled in the current state, but prior to any state transition.

Specified by:

eventSignaled in interface FlowExecutionListener

Parameters:

context - the current flow request context

event - the event that occurred

transitionExecuting

public void transitionExecuting(RequestContext context,
                                TransitionDefinition transition)

Description copied from interface: FlowExecutionListener

Called when a transition is matched but before the transition occurs.

Specified by:

transitionExecuting in interface FlowExecutionListener

Parameters:

context - the current flow request context

transition - the proposed transition

stateEntering

public void stateEntering(RequestContext context,
                          StateDefinition state)
                   throws EnterStateVetoException

Description copied from interface: FlowExecutionListener

Called when a state transitions, after the transition is matched but before the transition occurs.

Specified by:

stateEntering in interface FlowExecutionListener

Parameters:

context - the current flow request context

state - the proposed state to transition to

Throws:

EnterStateVetoException - when entering the state is not allowed

viewRendered

public void viewRendered(RequestContext context,
                         View view,
                         StateDefinition viewState)

Description copied from interface: FlowExecutionListener

Called after a view has completed rendering.

Specified by:

viewRendered in interface FlowExecutionListener

Parameters:

context - the current flow request context

view - the view that rendered

viewState - the current view state

viewRendering

public void viewRendering(RequestContext context,
                          View view,
                          StateDefinition viewState)

Description copied from interface: FlowExecutionListener

Called when a view is about to render in a view-state, before any render actions are executed.

Specified by:

viewRendering in interface FlowExecutionListener

Parameters:

context - the current flow request context

view - the view that is about to render

viewState - the current view state

stateEntered

public void stateEntered(RequestContext context,
                         StateDefinition previousState,
                         StateDefinition newState)

Description copied from interface: FlowExecutionListener

Called when a state transitions, after the transition occurred.

Specified by:

stateEntered in interface FlowExecutionListener

Parameters:

context - the current flow request context

previousState - from state of the transition

newState - to state of the transition

paused

public void paused(RequestContext context)

Description copied from interface: FlowExecutionListener

Called when a flow execution is paused, for instance when it is waiting for user input (after event processing).

Specified by:

paused in interface FlowExecutionListener

Parameters:

context - the current flow request context

resuming

public void resuming(RequestContext context)

Description copied from interface: FlowExecutionListener

Called after a flow execution is successfully reactivated after pause (but before event processing).

Specified by:

resuming in interface FlowExecutionListener

Parameters:

context - the current flow request context

sessionEnding

public void sessionEnding(RequestContext context,
                          FlowSession session,
                          java.lang.String outcome,
                          MutableAttributeMap<?> output)

Description copied from interface: FlowExecutionListener

Called when the active flow execution session has been asked to end but before it has ended.

Specified by:

sessionEnding in interface FlowExecutionListener

Parameters:

context - the current flow request context

session - the current active session that is ending

outcome - the outcome reached by the ending session, generally the id of the terminating end-state

output - the flow output produced by the ending session, this map may be modified by this listener to affect the output returned

sessionEnded

public void sessionEnded(RequestContext context,
                         FlowSession session,
                         java.lang.String outcome,
                         AttributeMap<?> output)

Description copied from interface: FlowExecutionListener

Called when a flow execution session ends. If the ended session was the root session of the flow execution, the entire flow execution also ends.

Specified by:

sessionEnded in interface FlowExecutionListener

Parameters:

context - the current flow request context

session - ending flow session

outcome - the outcome reached by the ended session, generally the id of the terminating end-state

output - the flow output returned by the ending session

exceptionThrown

public void exceptionThrown(RequestContext context,
                            FlowExecutionException exception)

Description copied from interface: FlowExecutionListener

Called when an exception is thrown during a flow execution, before the exception is handled by any registered handler.

Specified by:

exceptionThrown in interface FlowExecutionListener

Parameters:

context - the current flow request context

exception - the exception that occurred