com.atlassian.jira.util.map
Class CacheObject<T>

java.lang.Object
  com.atlassian.jira.util.map.CacheObject<T>

public class CacheObject<T>
extends Object

Used for keys or values in Maps that do not support null keys, or in caches where it is needed to differentiate between a cached 'null' value and an object not being in the cache. Copyright (c) 2002-2004 All rights reserved.

Field Summary

static CacheObject

NULL_INSTANCE A CacheObject<T> whose value is null.

Constructor Summary

CacheObject(T value)

Method Summary

boolean	equals(Object o)
T	getValue()
int	hashCode()
static <T> CacheObject<T>	NULL() Returns a CacheObject<T> whose value is null.
String	toString()
static <T> CacheObject<T>	wrap(T object) Wraps the given value in a CacheObject.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

NULL_INSTANCE

public static final CacheObject NULL_INSTANCE

A CacheObject<T> whose value is null. Prefer NULL() to avoid generic-related warnings.

Constructor Detail

CacheObject

public CacheObject(T value)

Method Detail

NULL

public static <T> CacheObject<T> NULL()

Returns a CacheObject<T> whose value is null.

Returns:

a CacheObject<T> whose value is null

wrap

public static <T> CacheObject<T> wrap(T object)

Wraps the given value in a CacheObject.

Parameters:

object - a <T>

Returns:

a CacheObject that wraps the given value

getValue

public T getValue()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object