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BeanContextMembershipEvent (Java Platform SE 6)



















    






    

    



    
  
    
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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
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    For further API reference and developer documentation, see Java 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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