org.jboss.util.collection

Class SoftSet

java.lang.Object

org.jboss.util.collection.SoftSet

All Implemented Interfaces:

java.lang.Iterable, java.util.Collection, java.util.Set

public class SoftSet
extends java.lang.Object
implements java.util.Set

An implementation of Set that manages a map of soft references to the set values. The map is keyed by the value hashCode and so this is only useful for value whose hashCode is a valid identity representation (String, primative wrappers, etc).

Version:

$Revision$

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static class	SoftSet.ComparableSoftReference
(package private) static class	SoftSet.ComparableSoftReferenceIterator

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.ref.ReferenceQueue	gcqueue The queue of garbage collected soft references
private java.util.HashMap	map

Constructor Summary

Constructors

Constructor and Description
SoftSet()

Method Summary

Modifier and Type	Method and Description
boolean	add(java.lang.Object o)
boolean	addAll(java.util.Collection c)
void	clear()
boolean	contains(java.lang.Object o)
boolean	containsAll(java.util.Collection c)
boolean	equals(java.lang.Object o)
int	hashCode()
boolean	isEmpty()
java.util.Iterator	iterator()
private void	processQueue() Iterate through the gcqueue for for any cleared reference, remove the associated value from the underlying set.
boolean	remove(java.lang.Object o)
boolean	removeAll(java.util.Collection c)
boolean	retainAll(java.util.Collection c)
int	size()
java.lang.Object[]	toArray()
java.lang.Object[]	toArray(java.lang.Object[] a)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Set

spliterator

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Field Detail

map

private java.util.HashMap map

gcqueue

private java.lang.ref.ReferenceQueue gcqueue

The queue of garbage collected soft references

Constructor Detail

SoftSet

public SoftSet()

Method Detail

size

public int size()

Specified by:

size in interface java.util.Collection

Specified by:

size in interface java.util.Set

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Collection

Specified by:

isEmpty in interface java.util.Set

contains

public boolean contains(java.lang.Object o)

Specified by:

contains in interface java.util.Collection

Specified by:

contains in interface java.util.Set

iterator

public java.util.Iterator iterator()

Specified by:

iterator in interface java.lang.Iterable

Specified by:

iterator in interface java.util.Collection

Specified by:

iterator in interface java.util.Set

toArray

public java.lang.Object[] toArray()

Specified by:

toArray in interface java.util.Collection

Specified by:

toArray in interface java.util.Set

toArray

public java.lang.Object[] toArray(java.lang.Object[] a)

Specified by:

toArray in interface java.util.Collection

Specified by:

toArray in interface java.util.Set

add

public boolean add(java.lang.Object o)

Specified by:

add in interface java.util.Collection

Specified by:

add in interface java.util.Set

remove

public boolean remove(java.lang.Object o)

Specified by:

remove in interface java.util.Collection

Specified by:

remove in interface java.util.Set

containsAll

public boolean containsAll(java.util.Collection c)

Specified by:

containsAll in interface java.util.Collection

Specified by:

containsAll in interface java.util.Set

addAll

public boolean addAll(java.util.Collection c)

Specified by:

addAll in interface java.util.Collection

Specified by:

addAll in interface java.util.Set

retainAll

public boolean retainAll(java.util.Collection c)

Specified by:

retainAll in interface java.util.Collection

Specified by:

retainAll in interface java.util.Set

removeAll

public boolean removeAll(java.util.Collection c)

Specified by:

removeAll in interface java.util.Collection

Specified by:

removeAll in interface java.util.Set

clear

public void clear()

Specified by:

clear in interface java.util.Collection

Specified by:

clear in interface java.util.Set

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in interface java.util.Collection

Specified by:

equals in interface java.util.Set

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Collection

Specified by:

hashCode in interface java.util.Set

Overrides:

hashCode in class java.lang.Object

processQueue

private void processQueue()

Iterate through the gcqueue for for any cleared reference, remove the associated value from the underlying set.