LifecycleSupport (Tomcat API Documentation)
Keywords: org.apache.catalina.util.LifecycleSupport class

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## org.apache.catalina.util
Class LifecycleSupport

    java.lang.Object
      org.apache.catalina.util.LifecycleSupport

    public final class LifecycleSupport

extends java.lang.Object

Support class to assist in firing LifecycleEvent notifications to registered LifecycleListeners.

Version:
  $Id: LifecycleSupport.java 771009 2009-05-03 01:15:41Z markt $
Author:
  Craig R. McClanahan

Constructor Summary
`LifecycleSupport(Lifecycle lifecycle)` Construct a new LifecycleSupport object associated with the specified Lifecycle component.

Method Summary
`void` | `addLifecycleListener(LifecycleListener listener)` Add a lifecycle event listener to this component.
`LifecycleListener[]` | `findLifecycleListeners()` Get the lifecycle listeners associated with this lifecycle.
`void` | `fireLifecycleEvent(java.lang.String type, java.lang.Object data)` Notify all lifecycle event listeners that a particular event has occurred for this Container.
`void` | `removeLifecycleListener(LifecycleListener listener)` Remove a lifecycle event listener from this component.

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

Constructor Detail

### LifecycleSupport

    public LifecycleSupport(Lifecycle lifecycle)

  Construct a new LifecycleSupport object associated with the specified Lifecycle component.

  Parameters:
    `lifecycle` - The Lifecycle component that will be the source of events that we fire

Method Detail

### addLifecycleListener

    public void addLifecycleListener(LifecycleListener listener)

  Add a lifecycle event listener to this component.

  Parameters:
    `listener` - The listener to add

### findLifecycleListeners

    public LifecycleListener[] findLifecycleListeners()

  Get the lifecycle listeners associated with this lifecycle. If this Lifecycle has no listeners registered, a zero-length array is returned.

### fireLifecycleEvent

    public void fireLifecycleEvent(java.lang.String type,
                                   java.lang.Object data)

  Notify all lifecycle event listeners that a particular event has occurred for this Container. The default implementation performs this notification synchronously using the calling thread.

  Parameters:
    `type` - Event type
    `data` - Event data

### removeLifecycleListener

    public void removeLifecycleListener(LifecycleListener listener)

  Remove a lifecycle event listener from this component.

  Parameters:
    `listener` - The listener to remove

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