com.google.common.collect

Class Interners.WeakInterner<E>

java.lang.Object

com.google.common.collect.Interners.WeakInterner<E>

All Implemented Interfaces:

Interner<E>

Enclosing class:

Interners

private static class Interners.WeakInterner<E>
extends java.lang.Object
implements Interner<E>

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	Interners.WeakInterner.Dummy

Field Summary

Fields

Modifier and Type	Field and Description
private MapMakerInternalMap<E,Interners.WeakInterner.Dummy,?,?>	map

Constructor Summary

Constructors

Modifier	Constructor and Description
private	WeakInterner()

Method Summary

Modifier and Type	Method and Description
E	intern(E sample) Chooses and returns the representative instance for any of a collection of instances that are equal to each other.

Methods inherited from class java.lang.Object

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

Field Detail

map

private final MapMakerInternalMap<E,Interners.WeakInterner.Dummy,?,?> map

Constructor Detail

WeakInterner

private WeakInterner()

Method Detail

intern

public E intern(E sample)

Description copied from interface: Interner

Chooses and returns the representative instance for any of a collection of instances that are equal to each other. If two equal inputs are given to this method, both calls will return the same instance. That is, intern(a).equals(a) always holds, and intern(a) == intern(b) if and only if a.equals(b). Note that intern(a) is permitted to return one instance now and a different instance later if the original interned instance was garbage-collected.

Warning: do not use with mutable objects.

Specified by:

intern in interface Interner<E>