org.zkoss.util

Class Cleanups

java.lang.Object

org.zkoss.util.Cleanups

public class Cleanups
extends java.lang.Object

Utilities to clean up resources when the application is stopping. Currently, when a ZK application is stopping, ZK will invoke cleanup(). Thus you can register an implementation of Cleanups.Cleanup to release the resources.

Notice that this utility is introduced mainly to resolve the memory lead issue if an application is hot re-deployed. A typical example is to stop any pooled threads.

How to use:

First, register the cleanup with add(org.zkoss.util.Cleanups.Cleanup).

Second, invoke cleanup() when necessary, such as when the application is stopping

.

Since:

3.6.5

Author:

tomyeh

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Cleanups.Cleanup The interface to implement for each cleanup.

Constructor Summary

Constructors

Constructor and Description
Cleanups()

Method Summary

Modifier and Type	Method and Description
static boolean	add(Cleanups.Cleanup cleanup) Registers a cleanup.
static void	cleanup() Invokes all cleanups registered with add(org.zkoss.util.Cleanups.Cleanup).
static boolean	remove(Cleanups.Cleanup cleanup) Un-registers a cleanup.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Cleanups

public Cleanups()

Method Detail

add

public static boolean add(Cleanups.Cleanup cleanup)

Registers a cleanup.

Returns:

true if it is added successfully, or false if the cleanup has been registered before.

remove

public static boolean remove(Cleanups.Cleanup cleanup)

Un-registers a cleanup.

Returns:

true if it is removed successfully, or false if not registered before.

cleanup

public static void cleanup()

Invokes all cleanups registered with add(org.zkoss.util.Cleanups.Cleanup).