Package org.springframework.webflow.engine

Class EndState

java.lang.Object

org.springframework.webflow.core.AnnotatedObject

org.springframework.webflow.engine.State

org.springframework.webflow.engine.EndState

All Implemented Interfaces:

Annotated, StateDefinition

public class EndState
extends State

A state that ends a flow when entered. This state ends the active flow session of an ongoing flow execution.

If the ended session is the "root flow session" the entire flow execution ends, signaling the end of a logical conversation.

If the terminated session was acting as a subflow, the flow execution continues and control is returned to the parent flow session. In that case, this state returns an ending result event the resuming parent flow responds to.

An end state may be configured with a renderer to render a final response. This renderer will be invoked if the end state terminates the entire flow execution.

Author:

Keith Donald, Colin Sampaleanu, Erwin Vervaet

See Also:

• SubflowState

Field Summary

Fields inherited from class org.springframework.webflow.engine.State

logger

Fields inherited from class org.springframework.webflow.core.AnnotatedObject

CAPTION_PROPERTY, DESCRIPTION_PROPERTY

Constructor Summary

Constructors

Constructor	Description
EndState(Flow flow, String id)	Create a new end state with no associated view.

Method Summary

Modifier and Type	Method	Description
protected void	appendToString(org.springframework.core.style.ToStringCreator creator)	Subclasses may override this hook method to print their internal state to a string.
protected LocalAttributeMap<Object>	createSessionOutput(RequestContext context)	Returns the subflow output map.
protected void	doEnter(RequestControlContext context)	Specialization of State's doEnter template method that executes behavior specific to this state type in polymorphic fashion.
void	setFinalResponseAction(Action finalResponseAction)	Sets the renderer that will render the final flow execution response.
void	setOutputMapper(Mapper outputMapper)	Sets the attribute mapper to use for mapping output attributes exposed by this end state when it is entered.

Methods inherited from class org.springframework.webflow.engine.State

doPreEntryActions, enter, equals, getEntryActionList, getExceptionHandlerSet, getFlow, getId, getOwner, handleException, hashCode, isStartState, isViewState, toString

Methods inherited from class org.springframework.webflow.core.AnnotatedObject

getAttributes, getCaption, getDescription, setCaption, setDescription

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.springframework.webflow.core.Annotated

getAttributes, getCaption, getDescription

Constructor Details

EndState

public EndState(Flow flow,
 String id)
         throws IllegalArgumentException

Create a new end state with no associated view.

Parameters:

flow - the owning flow

id - the state identifier (must be unique to the flow)

Throws:

IllegalArgumentException - when this state cannot be added to given flow, e.g. because the id is not unique

See Also:

• State(Flow, String)
• setFinalResponseAction(Action)
• setOutputMapper(Mapper)

Method Details

setFinalResponseAction

public void setFinalResponseAction(Action finalResponseAction)

Sets the renderer that will render the final flow execution response.

setOutputMapper

public void setOutputMapper(Mapper outputMapper)

Sets the attribute mapper to use for mapping output attributes exposed by this end state when it is entered.

doEnter

protected void doEnter(RequestControlContext context)
                throws FlowExecutionException

Specialization of State's doEnter template method that executes behavior specific to this state type in polymorphic fashion.

This implementation pops the top (active) flow session off the execution stack, ending it, and resumes control in the parent flow (if necessary). If the ended session is the root flow, a final response is rendered.

Specified by:

doEnter in class State

Parameters:

context - the control context for the currently executing flow, used by this state to manipulate the flow execution

Throws:

FlowExecutionException - if an exception occurs in this state

createSessionOutput

protected LocalAttributeMap<Object> createSessionOutput(RequestContext context)

Returns the subflow output map. This will invoke the output mapper (if any) to map data available in the flow execution request context into a newly created empty map.

appendToString

protected void appendToString(org.springframework.core.style.ToStringCreator creator)

Description copied from class: State

Subclasses may override this hook method to print their internal state to a string. This default implementation does nothing.

Overrides:

appendToString in class State

Parameters:

creator - the toString creator, to print properties to string

See Also:

• State.toString()