Class BeanContextMembershipEvent

All Implemented Interfaces:
Serializable
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

Fields

Modifier and Type Field Description
protected Collection children

The list of children affected by this event notification.

Fields declared in class java.beans.beancontext.BeanContextEvent

propagatedFrom

Fields declared in class java.util.EventObject

source

Constructors

Constructor Description
BeanContextMembershipEvent​(BeanContext bc, Object[] changes)

Contruct a BeanContextMembershipEvent
BeanContextMembershipEvent​(BeanContext bc, Collection changes)

Contruct a BeanContextMembershipEvent

Methods

Modifier and Type Method Description
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 declared in class java.beans.beancontext.BeanContextEvent

getBeanContext, getPropagatedFrom, isPropagated, setPropagatedFrom

Methods declared in class java.util.EventObject

getSource, toString

Methods declared in class java.lang.Object

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

Fields

children

protected Collection children

The list of children affected by this event notification.

Constructors

BeanContextMembershipEvent

public BeanContextMembershipEvent(BeanContext bc,
                                  Collection changes)

Contruct a BeanContextMembershipEvent

Parameters:
bc - The BeanContext source
changes - The Children affected
Throws:
NullPointerException - if changes is null

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.

Methods

size

public int size()

Gets the number of children affected by the notification.

Returns:
the number of children affected by the notification

contains

public boolean contains(Object child)

Is the child specified affected by the event?

Parameters:
child - the object to check for being affected
Returns:
true if affected, false if not

toArray

public Object[] toArray()

Gets the array of children affected by this event.

Returns:
the array of children affected

iterator

public Iterator iterator()

Gets the array of children affected by this event.

Returns:
the array of children effected

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https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/java/beans/beancontext/BeanContextMembershipEvent.html