com.liferay.faces.util.lifecycle
Class ViewScopePhaseListener

java.lang.Object
  com.liferay.faces.util.lifecycle.ViewScopePhaseListener

All Implemented Interfaces:

Serializable, EventListener, javax.faces.event.PhaseListener

public class ViewScopePhaseListener
extends Object
implements javax.faces.event.PhaseListener

This class is a JSF PhaseListener that listens to the PhaseId.RESTORE_VIEW phase of the JSF lifecycle. Its purpose is to re-inject ManagedProperty values into ViewScoped managed-bean instances after postback.

When running under Mojarra, ViewScoped managed-beans are essentially stored in the underlying session. When running under MyFaces, ViewScoped managed-beans are serialized after the JSF lifecycle runs, probably so that they don't take up memory on the server. When doing a postback to a ViewScoped managed-bean, Mojarra simply pulls the live instance from the session. But with MyFaces, the managed-bean must be deserialized. The problem with this is that MyFaces does not re-inject @ManagedProperty values after deserialization. This class exists to work-around this problem.

For more information, see: http://issues.liferay.com/browse/FACES-1400

Author:

Neil Griffin

See Also:

Serialized Form

Nested Class Summary

protected class

ViewScopePhaseListener.ManagedPropertyInjector

Constructor Summary

ViewScopePhaseListener()

Method Summary

void	afterPhase(javax.faces.event.PhaseEvent phaseEvent)
void	beforePhase(javax.faces.event.PhaseEvent phaseEvent)
protected Map<String,Field>	getManagedPropertyFields(Class<?> managedBeanClass)
protected String	getManagedPropertyName(javax.faces.bean.ManagedProperty managedProperty, Field field)
javax.faces.event.PhaseId	getPhaseId()
protected void	injectManagedProperties(Object managedBean, ViewScopePhaseListener.ManagedPropertyInjector managedPropertyInjector)
protected void	processViewScopedManagedBeans(javax.faces.context.FacesContext facesContext)

Methods inherited from class java.lang.Object

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

Constructor Detail

ViewScopePhaseListener

public ViewScopePhaseListener()

Method Detail

afterPhase

public void afterPhase(javax.faces.event.PhaseEvent phaseEvent)

Specified by:

afterPhase in interface javax.faces.event.PhaseListener

beforePhase

public void beforePhase(javax.faces.event.PhaseEvent phaseEvent)

Specified by:

beforePhase in interface javax.faces.event.PhaseListener

injectManagedProperties

protected void injectManagedProperties(Object managedBean,
                                       ViewScopePhaseListener.ManagedPropertyInjector managedPropertyInjector)

processViewScopedManagedBeans

protected void processViewScopedManagedBeans(javax.faces.context.FacesContext facesContext)

getManagedPropertyFields

protected Map<String,Field> getManagedPropertyFields(Class<?> managedBeanClass)

getManagedPropertyName

protected String getManagedPropertyName(javax.faces.bean.ManagedProperty managedProperty,
                                        Field field)

getPhaseId

public javax.faces.event.PhaseId getPhaseId()

Specified by:

getPhaseId in interface javax.faces.event.PhaseListener