org.jboss.seam.framework
Class MutableController<T>

java.lang.Object
  org.jboss.seam.framework.Controller
      org.jboss.seam.framework.PersistenceController<T>
          org.jboss.seam.framework.MutableController<T>

All Implemented Interfaces:

java.io.Serializable, Mutable

Direct Known Subclasses:

Home, MutableEntityController

public abstract class MutableController<T>
extends PersistenceController<T>
implements java.io.Serializable, Mutable

Base class for controllers which implement the Mutable interface.

Author:

Gavin King

See Also:

Serialized Form

Constructor Summary

MutableController()

Method Summary

boolean	clearDirty() Get and clear the dirty flag.
protected void	setDirty() Set the dirty flag.
protected <U> boolean	setDirty(U oldValue, U newValue) Set the dirty flag if the value has changed.

Methods inherited from class org.jboss.seam.framework.PersistenceController

getPersistenceContext, getPersistenceContextName, setPersistenceContext

Methods inherited from class org.jboss.seam.framework.Controller

addCookie, addFacesMessage, addFacesMessageFromResourceBundle, createValueExpression, createValueExpression, debug, debug, error, error, evaluateValueExpression, evaluateValueExpression, failValidation, fatal, fatal, getApplicationContext, getBusinessProcessContext, getComponentInstance, getComponentInstance, getConversation, getConversationContext, getCookie, getEventContext, getEvents, getFacesContext, getFacesMessages, getIdentity, getLog, getMessages, getMethodContext, getPageContext, getRedirect, getSessionContext, getStatusMessages, getValidator, getValidator, info, info, interpolate, invalidateSession, isTransactionMarkedRollback, raiseAsynchronousEvent, raiseEvent, raiseTransactionSuccessEvent, render, sendHttpError, sendHttpError, trace, trace, validationFailed, validationSucceeded, warn, warn

Methods inherited from class java.lang.Object

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

Constructor Detail

MutableController

public MutableController()

Method Detail

clearDirty

public boolean clearDirty()

Description copied from interface: Mutable

Get and clear the dirty flag.

Specified by:

clearDirty in interface Mutable

Returns:

true if the instance is dirty and requires replication

setDirty

protected <U> boolean setDirty(U oldValue,
                               U newValue)

Set the dirty flag if the value has changed. Call whenever a subclass attribute is updated.

Parameters:

oldValue - the old value of an attribute

newValue - the new value of an attribute

Returns:

true if the newValue is not equal to the oldValue

setDirty

protected void setDirty()

Set the dirty flag.