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package javax.naming.event;


Specifies the method that a listener of a NamingEvent with event type of OBJECT_CHANGED must implement. 
 An OBJECT_CHANGED event type is fired when (the contents of) an object has changed. This might mean that its attributes have been modified, added, or removed, and/or that the object itself has been replaced. How the object has changed can be determined by examining the NamingEvent's old and new bindings. 
 A listener interested in OBJECT_CHANGED event types must: 
    

  1. Implement this interface and its method (objectChanged()) 
  2. Implement NamingListener.namingExceptionThrown() so that it will be notified of exceptions thrown while attempting to collect information about the events. 
  3. Register with the source using the source's addNamingListener() method. 
 A listener that wants to be notified of namespace change events should also implement the NamespaceChangeListener interface. 
Author:Rosanna Lee, Scott Seligman
See Also:
Since:1.3
/**
  * Specifies the method that a listener of a {@code NamingEvent}
  * with event type of {@code OBJECT_CHANGED} must implement.
  *<p>
  * An {@code OBJECT_CHANGED} event type is fired when (the contents of)
  * an object has changed. This might mean that its attributes have been modified,
  * added, or removed, and/or that the object itself has been replaced.
  * How the object has changed can be determined by examining the
  * {@code NamingEvent}'s old and new bindings.
  *<p>
  * A listener interested in {@code OBJECT_CHANGED} event types must:
  *<ol>
  *
  *<li>Implement this interface and its method ({@code objectChanged()})
  *<li>Implement {@code NamingListener.namingExceptionThrown()} so that
  * it will be notified of exceptions thrown while attempting to
  * collect information about the events.
  *<li>Register with the source using the source's {@code addNamingListener()}
  *    method.
  *</ol>
  * A listener that wants to be notified of namespace change events
  * should also implement the {@code NamespaceChangeListener}
  * interface.
  *
  * @author Rosanna Lee
  * @author Scott Seligman
  *
  * @see NamingEvent
  * @see NamespaceChangeListener
  * @see EventContext
  * @see EventDirContext
  * @since 1.3
  */
public interface ObjectChangeListener extends NamingListener {

    
Called when an object has been changed.

 The binding of the changed object can be obtained using evt.getNewBinding(). Its old binding (before the change) can be obtained using evt.getOldBinding(). 
Params:
  • evt – The nonnull naming event.
See Also:
/**
     * Called when an object has been changed.
     *<p>
     * The binding of the changed object can be obtained using
     * {@code evt.getNewBinding()}. Its old binding (before the change)
     * can be obtained using {@code evt.getOldBinding()}.
     * @param evt The nonnull naming event.
     * @see NamingEvent#OBJECT_CHANGED
     */
    void objectChanged(NamingEvent evt);
}