org.springframework.webflow.mvc.portlet
Class AbstractFlowHandler

java.lang.Object
  org.springframework.webflow.mvc.portlet.AbstractFlowHandler

All Implemented Interfaces:

FlowHandler

public class AbstractFlowHandler
extends java.lang.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, Rossen Stoyanchev

Constructor Summary

AbstractFlowHandler()

Method Summary

MutableAttributeMap<java.lang.Object>	createExecutionInputMap(javax.portlet.RenderRequest request) Creates the flow execution input map to pass to a new instance of the flow being started in a render request.
MutableAttributeMap<java.lang.Object>	createResourceExecutionInputMap(javax.portlet.ResourceRequest request) Creates the flow execution input map to pass to a new instance of the flow being started in a resource request.
java.lang.String	getFlowId() Returns the id of the flow handled by this handler.
java.lang.String	handleException(FlowException e, javax.portlet.PortletRequest request, javax.portlet.RenderResponse response)
java.lang.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 in render request.
boolean	handleExecutionOutcome(FlowExecutionOutcome outcome, javax.portlet.ActionRequest request, javax.portlet.ActionResponse response) Handles a specific flow execution outcome.
java.lang.String	handleResourceException(FlowException e, javax.portlet.ResourceRequest request, javax.portlet.ResourceResponse response) Handles a flow exception that was not handled by the Web Flow system in a resource request.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractFlowHandler

public AbstractFlowHandler()

Method Detail

getFlowId

public java.lang.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<java.lang.Object> 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 in a render request. 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

createResourceExecutionInputMap

public MutableAttributeMap<java.lang.Object> createResourceExecutionInputMap(javax.portlet.ResourceRequest request)

Description copied from interface: FlowHandler

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

Specified by:

createResourceExecutionInputMap 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 java.lang.String handleException(FlowException e,
                                        javax.portlet.PortletRequest request,
                                        javax.portlet.RenderResponse response)

handleException

public java.lang.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 in render request. 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

handleResourceException

public java.lang.String handleResourceException(FlowException e,
                                                javax.portlet.ResourceRequest request,
                                                javax.portlet.ResourceResponse response)

Description copied from interface: FlowHandler

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

Specified by:

handleResourceException 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