Class CacheRef

java.lang.Object
  |
  +--CacheRef

Direct Known Subclasses:

ImageJob

public class CacheRef

extends java.lang.Object

Field Summary

private java.lang.Object	lock
(package private) java.lang.ref.SoftReference	ref

Constructor Summary

(package private)	CacheRef()
	CacheRef(java.lang.Object target)

Method Summary

java.lang.Object	get()
boolean	lock(boolean hold) Lock or unlock the cached object. lock(true) makes the CacheRef act like a hard reference.
void	set(java.lang.Object target)
static void	uses(java.lang.Object user, CacheRef target)

Methods inherited from class java.lang.Object

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

Field Detail

ref

transient java.lang.ref.SoftReference ref

lock

private transient java.lang.Object lock

Constructor Detail

CacheRef

CacheRef()

CacheRef

public CacheRef(java.lang.Object target)

Method Detail

set

public void set(java.lang.Object target)

get

public java.lang.Object get()

lock

public boolean lock(boolean hold)

Lock or unlock the cached object.
lock(true) makes the CacheRef act like a hard reference. The object cannot be reclaimed. returns true iff the reference is not null.
lock(false) unlocks the reference so it may cleared, and always returns true.

uses

public static void uses(java.lang.Object user,
                        CacheRef target)