com.oracle.common.base

Class IdentityHasher<V>

java.lang.Object

com.oracle.common.base.IdentityHasher<V>

Type Parameters:

V - the value type

All Implemented Interfaces:

Hasher<V>

public class IdentityHasher<V>
extends Object
implements Hasher<V>

IdentityHasher provides a Hasher implementation based upon an object's identity hashCode and reference equality.

Author:

mf 2011.01.07

Field Summary

Fields

Modifier and Type	Field and Description
static IdentityHasher	INSTANCE A singleton instance of the IdentityHasher.

Constructor Summary

Constructors

Constructor and Description
IdentityHasher()

Method Summary

Modifier and Type	Method and Description
boolean	equals(V va, V vb) Compare two objects for equality.
int	hashCode(V o) Return a hash for the specified object.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final IdentityHasher INSTANCE

A singleton instance of the IdentityHasher.

Constructor Detail

IdentityHasher

public IdentityHasher()

Method Detail

hashCode

public int hashCode(V o)

Return a hash for the specified object.

Specified by:

hashCode in interface Hasher<V>

Parameters:

o - the object to hash

Returns:

the hash

equals

public boolean equals(V va,
                      V vb)

Compare two objects for equality.

Specified by:

equals in interface Hasher<V>

Parameters:

va - the first object to compare

vb - the second object to compare

Returns:

true iff the object are equal