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## org.springframework.jmx.support
Class NotificationListenerHolder

    java.lang.Object
      org.springframework.jmx.support.NotificationListenerHolder

Direct Known Subclasses:
  NotificationListenerBean, NotificationListenerRegistrar

    public class NotificationListenerHolder

extends Object

Helper class that aggregates a `NotificationListener`, a `NotificationFilter`, and an arbitrary handback object, as well as the names of MBeans from which the listener wishes to receive `Notifications`.

Since:
  2.5.2
Author:
  Juergen Hoeller
See Also:
  `NotificationListenerBean`, `NotificationListenerRegistrar`

Field Summary
`protected Set` | `mappedObjectNames`

Constructor Summary
`NotificationListenerHolder()`

Method Summary
`boolean` | `equals(Object other)`
`Object` | `getHandback()` Return the (arbitrary) object that will be 'handed back' as-is by an `NotificationBroadcaster` when notifying any `NotificationListener`.
`NotificationFilter` | `getNotificationFilter()` Return the `NotificationFilter` associated with the encapsulated `NotificationFilter`.
`NotificationListener` | `getNotificationListener()` Get the `NotificationListener`.
`ObjectName[]` | `getResolvedObjectNames()` Return the list of `ObjectName` String representations for which the encapsulated `NotificationFilter` will be registered as a listener for `Notifications`.
`int` | `hashCode()`
`void` | `setHandback(Object handback)` Set the (arbitrary) object that will be 'handed back' as-is by an `NotificationBroadcaster` when notifying any `NotificationListener`.
`void` | `setMappedObjectName(Object mappedObjectName)` Set the `ObjectName`-style name of the single MBean that the encapsulated `NotificationFilter` will be registered with to listen for `Notifications`.
`void` | `setMappedObjectNames(Object[] mappedObjectNames)` Set an array of `ObjectName`-style names of the MBeans that the encapsulated `NotificationFilter` will be registered with to listen for `Notifications`.
`void` | `setNotificationFilter(NotificationFilter notificationFilter)` Set the `NotificationFilter` associated with the encapsulated `NotificationFilter`.
`void` | `setNotificationListener(NotificationListener notificationListener)` Set the `NotificationListener`.

Methods inherited from class java.lang.Object
`clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### mappedObjectNames

    protected Set mappedObjectNames

Constructor Detail

### NotificationListenerHolder

    public NotificationListenerHolder()

Method Detail

### setNotificationListener

    public void setNotificationListener(NotificationListener notificationListener)

  Set the `NotificationListener`.

### getNotificationListener

    public NotificationListener getNotificationListener()

  Get the `NotificationListener`.

### setNotificationFilter

    public void setNotificationFilter(NotificationFilter notificationFilter)

  Set the `NotificationFilter` associated with the encapsulated `NotificationFilter`.

  May be `null`.

### getNotificationFilter

    public NotificationFilter getNotificationFilter()

  Return the `NotificationFilter` associated with the encapsulated `NotificationFilter`.

  May be `null`.

### setHandback

    public void setHandback(Object handback)

  Set the (arbitrary) object that will be 'handed back' as-is by an `NotificationBroadcaster` when notifying any `NotificationListener`.

  Parameters:
    `handback` - the handback object (can be `null`)
  See Also:
    `NotificationListener.handleNotification(javax.management.Notification, Object)`

### getHandback

    public Object getHandback()

  Return the (arbitrary) object that will be 'handed back' as-is by an `NotificationBroadcaster` when notifying any `NotificationListener`.

  Returns:
    the handback object (may be `null`)
  See Also:
    `NotificationListener.handleNotification(javax.management.Notification, Object)`

### setMappedObjectName

    public void setMappedObjectName(Object mappedObjectName)

  Set the `ObjectName`-style name of the single MBean that the encapsulated `NotificationFilter` will be registered with to listen for `Notifications`. Can be specified as `ObjectName` instance or as `String`.

  See Also:
    `setMappedObjectNames(java.lang.Object[])`

### setMappedObjectNames

    public void setMappedObjectNames(Object[] mappedObjectNames)

  Set an array of `ObjectName`-style names of the MBeans that the encapsulated `NotificationFilter` will be registered with to listen for `Notifications`. Can be specified as `ObjectName` instances or as `String`s.

  See Also:
    `setMappedObjectName(java.lang.Object)`

### getResolvedObjectNames

    public ObjectName[] getResolvedObjectNames()
                                        throws MalformedObjectNameException

  Return the list of `ObjectName` String representations for which the encapsulated `NotificationFilter` will be registered as a listener for `Notifications`.

  Throws:
    `MalformedObjectNameException` - if an `ObjectName` is malformed

### equals

    public boolean equals(Object other)

  Overrides:
    `equals` in class `Object`

### hashCode

    public int hashCode()

  Overrides:
    `hashCode` in class `Object`

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