org.springframework.webflow.mvc.portlet

Class AbstractFlowHandler

java.lang.Object

org.springframework.webflow.mvc.portlet.AbstractFlowHandler

All Implemented Interfaces:

FlowHandler

public class AbstractFlowHandler
extends Object
implements FlowHandler

Trivial flow handler base class that simply returns null for all operations. Subclasses should extend and override which operations they need.

Author:

Keith Donald

Constructor Summary

Constructors

Constructor and Description
AbstractFlowHandler()

Method Summary

Methods

Modifier and Type	Method and Description
MutableAttributeMap	createExecutionInputMap(javax.portlet.RenderRequest request) Creates the flow execution input map to pass to a new instance of the flow being started.
String	getFlowId() Returns the id of the flow handled by this handler.
String	handleException(FlowException e, javax.portlet.RenderRequest request, javax.portlet.RenderResponse response) Handles a flow exception that was not handled by the Web Flow system.
boolean	handleExecutionOutcome(FlowExecutionOutcome outcome, javax.portlet.ActionRequest request, javax.portlet.ActionResponse response) Handles a specific flow execution outcome.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractFlowHandler

public AbstractFlowHandler()

Method Detail

getFlowId

public String getFlowId()

Description copied from interface: FlowHandler

Returns the id of the flow handled by this handler. Used by a Controller to load the flow definition.

Specified by:

getFlowId in interface FlowHandler

Returns:

the flow id

createExecutionInputMap

public MutableAttributeMap createExecutionInputMap(javax.portlet.RenderRequest request)

Description copied from interface: FlowHandler

Creates the flow execution input map to pass to a new instance of the flow being started. Used by a Controller to launch the flow execution with the correct input.

Specified by:

createExecutionInputMap in interface FlowHandler

Parameters:

request - the current request

Returns:

the input map

handleExecutionOutcome

public boolean handleExecutionOutcome(FlowExecutionOutcome outcome,
                             javax.portlet.ActionRequest request,
                             javax.portlet.ActionResponse response)

Description copied from interface: FlowHandler

Handles a specific flow execution outcome. Used to change portlet modes after the flow ends.

Specified by:

handleExecutionOutcome in interface FlowHandler

Parameters:

outcome - the outcome that was reached

request - the current action request

response - the current action response

Returns:

whether this outcome was handled, or whether the caller should handle it

handleException

public String handleException(FlowException e,
                     javax.portlet.RenderRequest request,
                     javax.portlet.RenderResponse response)

Description copied from interface: FlowHandler

Handles a flow exception that was not handled by the Web Flow system. Used by a Controller to handle a specific type of exception dealing with this flow in a custom manner.

Specified by:

handleException in interface FlowHandler

Parameters:

e - the unhandled exception originating from Spring Web Flow. May be thrown by the flow execution itself or the flow executor system if no execution could be restored.

request - the current request

response - the current response

Returns:

the name of a specific error view to render, or null if the exception should be handled by the caller