org.josef.web.jsf.bean.crud

Class ItemObservable

java.lang.Object

java.util.Observable

org.josef.web.jsf.bean.crud.ItemObservable

All Implemented Interfaces:

Serializable

public class ItemObservable
extends Observable
implements Serializable

Observable for changes in an Item.
Observers may register themselves when interested in events like:

• new parent created
• another parent has been selected

Version:

1.0 $Revision: 3786 $

Author:

Kees Schotanus

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ItemObservable()

Method Summary

Modifier and Type	Method and Description
<O extends Observer> void	addChildObserver(String beanName, Class<O> beanClass) Adds a JSF managed bean as an observer.
void	addObserver(Observer observer) Blocks this method from being used since the addChildObserver(String, Class) should be used instead.
void	newParent() A new parent has been created, so all observers need to be notified.
void	selectParent(Long parentId) An existing parent has been selected, so all observers need to be notified.

Methods inherited from class java.util.Observable

clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

Methods inherited from class java.lang.Object

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

Constructor Detail

ItemObservable

public ItemObservable()

Method Detail

addChildObserver

public <O extends Observer> void addChildObserver(String beanName,
                                                  Class<O> beanClass)

Adds a JSF managed bean as an observer.

Type Parameters:

O - Type of the observer.

Parameters:

beanName - The name of the JSF managed bean to add as an observer.

beanClass - The class of the bean.

newParent

public void newParent()

A new parent has been created, so all observers need to be notified.

selectParent

public void selectParent(Long parentId)

An existing parent has been selected, so all observers need to be notified.

Parameters:

parentId - The ID of the selected parent.

addObserver

public void addObserver(Observer observer)

Blocks this method from being used since the addChildObserver(String, Class) should be used instead.

Overrides:

addObserver in class Observable

Parameters:

observer - The observer.

Throws:

UnsupportedOperationException - Always.