Java™ Platform
Standard Ed. 6

java.beans.beancontext
Class BeanContextMembershipEvent

java.lang.Object
  extended by java.util.EventObject
      extended by java.beans.beancontext.BeanContextEvent
          extended by java.beans.beancontext.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

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
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.
Method Detail

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?

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

Java™ Platform
Standard Ed. 6

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