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Java 2 Platform SE v1.3.1: Class BeanContextMembershipEvent - JDK 5 Documentation v1.3.1, Java 2 SDK 英文文档

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java.beans.beancontext
Class BeanContextMembershipEvent

java.lang.Object
  |
  +--java.util.EventObject
        |
        +--java.beans.beancontext.BeanContextEvent
              |
              +--java.beans.beancontext.BeanContextMembershipEvent

All Implemented Interfaces:

Serializable

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public class BeanContextMembershipEvent

extends BeanContextEvent

A BeanContextMembershipEvent encapsulates the list of children added to, or removed from, the membership of a particular BeanContext. An instance of this event is fired whenever a successful add(), remove(), retainAll(), removeAll(), or clear() is invoked on a given BeanContext instance. Objects interested in receiving events of this type must implement the BeanContextMembershipListener interface, and must register their intent via the BeanContext's addBeanContextMembershipListener(BeanContextMembershipListener bcml) method.

Since:

1.2

See Also:

BeanContext, BeanContextEvent, BeanContextMembershipListener, Serialized Form

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Field Summary
protected  Collection	children           The list of children affected by this event notification.

 

Fields inherited from class java.beans.beancontext.BeanContextEvent

propagatedFrom

 

Fields inherited from class java.util.EventObject

source

 

Constructor Summary

BeanContextMembershipEvent(BeanContext bc, Collection changes)           Contruct a BeanContextMembershipEvent

BeanContextMembershipEvent(BeanContext bc, Object[] changes)           Contruct a BeanContextMembershipEvent

 

Method Summary
boolean	contains(Object child)           Is the child specified affected by the event?
Iterator	iterator()           Gets the array of children affected by this event.
int	size()           Gets the number of children affected by the notification.
Object[]	toArray()           Gets the array of children affected by this event.

 

Methods inherited from class java.beans.beancontext.BeanContextEvent

getBeanContext, getPropagatedFrom, isPropagated, setPropagatedFrom

 

Methods inherited from class java.util.EventObject

getSource, toString

 

Methods inherited from class java.lang.Object

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

 

Field Detail

children

protected Collection children

The list of children affected by this event notification.

Constructor Detail

BeanContextMembershipEvent

public BeanContextMembershipEvent(BeanContext bc,
                                  Collection changes)

Contruct a BeanContextMembershipEvent

Parameters:

bc - The BeanContext source

changes - The Children affected

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BeanContextMembershipEvent

public BeanContextMembershipEvent(BeanContext bc,
                                  Object[] changes)

Contruct a BeanContextMembershipEvent

Parameters:

bc - The BeanContext source

changes - The Children effected

Throws:

NullPointerException - if changes associated with this event are null.

Method Detail

size

public int size()

Gets the number of children affected by the notification.

Returns:

the number of children affected by the notification

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contains

public boolean contains(Object child)

Is the child specified affected by the event?

Returns:

true if affected, false if not

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toArray

public Object[] toArray()

Gets the array of children affected by this event.

Returns:

the array of children affected

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iterator

public Iterator iterator()

Gets the array of children affected by this event.

Returns:

the array of children effected

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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