org.sakaiproject.jsf.component

Class FlowState

java.lang.Object

javax.faces.component.UIComponent

javax.faces.component.UIComponentBase

org.sakaiproject.jsf.component.FlowState

All Implemented Interfaces:

StateHolder

public class FlowState
extends UIComponentBase

This JSF UI component lets backing beans track the request life cycle and save their state within the component tree itself. (These two aspects could be separated with a "saveState" Boolean attribute if we ever need to let a session-scoped bean track the request life cycle.) Like the MyFaces x:saveState tag, this passes the bean's state from request to request without use of session scope. That in turn enables request-thread functionality such as "what if?" scenarios and multiple active application views from a single session.

Usage: <sakaix:flowState bean="#{phaseAwareBean}" /> should be placed in the JSP file before any other bean references are made.

The bean must implement the PhaseAware interface and be serializable. Any non-transient fields in the bean will be saved and restored from this component.

Field Summary

Fields

Modifier and Type	Field and Description
static String	COMPONENT_TYPE

Constructor Summary

Constructors

Constructor and Description
FlowState()

Method Summary

Modifier and Type	Method and Description
void	encodeBegin(FacesContext context)
PhaseAware	getBean()
String	getFamily()
void	processDecodes(FacesContext context)
void	processRestoreState(FacesContext context, Object state)
void	processUpdates(FacesContext context)
void	processValidators(FacesContext context)
void	restoreState(FacesContext context, Object state)
Object	saveState(FacesContext context)

Methods inherited from class javax.faces.component.UIComponentBase

addFacesListener, broadcast, decode, encodeChildren, encodeEnd, findComponent, getAttributes, getChildCount, getChildren, getClientId, getFacesContext, getFacesListeners, getFacet, getFacets, getFacetsAndChildren, getId, getParent, getRenderer, getRendererType, getRendersChildren, getValueBinding, isRendered, isTransient, processSaveState, queueEvent, removeFacesListener, restoreAttachedState, saveAttachedState, setId, setParent, setRendered, setRendererType, setTransient, setValueBinding

Methods inherited from class java.lang.Object

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

Field Detail

COMPONENT_TYPE

public static final String COMPONENT_TYPE

See Also:

Constant Field Values

Constructor Detail

FlowState

public FlowState()

Method Detail

getBean

public PhaseAware getBean()

saveState

public Object saveState(FacesContext context)

Specified by:

saveState in interface StateHolder

Overrides:

saveState in class UIComponentBase

restoreState

public void restoreState(FacesContext context,
                         Object state)

Specified by:

restoreState in interface StateHolder

Overrides:

restoreState in class UIComponentBase

processRestoreState

public void processRestoreState(FacesContext context,
                                Object state)

Overrides:

processRestoreState in class UIComponentBase

processDecodes

public void processDecodes(FacesContext context)

Overrides:

processDecodes in class UIComponentBase

processValidators

public void processValidators(FacesContext context)

Overrides:

processValidators in class UIComponentBase

processUpdates

public void processUpdates(FacesContext context)

Overrides:

processUpdates in class UIComponentBase

encodeBegin

public void encodeBegin(FacesContext context)
                 throws IOException

Overrides:

encodeBegin in class UIComponentBase

Throws:

IOException

getFamily

public String getFamily()

Specified by:

getFamily in class UIComponent