gnu.trove.strategy

Class IdentityHashingStrategy<K>

java.lang.Object

gnu.trove.strategy.IdentityHashingStrategy<K>

All Implemented Interfaces:

HashingStrategy<K>, java.io.Serializable

public class IdentityHashingStrategy<K>
extends java.lang.Object
implements HashingStrategy<K>

A HashingStrategy that does identity comparisons (==) and uses System.identityHashCode(Object) for hashCode generation.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static IdentityHashingStrategy<java.lang.Object>	INSTANCE A single instance that can be shared with multiple collections.

Constructor Summary

Constructors

Constructor and Description
IdentityHashingStrategy()

Method Summary

Modifier and Type	Method and Description
int	computeHashCode(K object) Computes a hash code for the specified object.
boolean	equals(K o1, K o2) Compares o1 and o2 for equality.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final IdentityHashingStrategy<java.lang.Object> INSTANCE

A single instance that can be shared with multiple collections. This instance is thread safe.

Constructor Detail

IdentityHashingStrategy

public IdentityHashingStrategy()

Method Detail

computeHashCode

public int computeHashCode(K object)

Description copied from interface: HashingStrategy

Computes a hash code for the specified object. Implementers can use the object's own hashCode method, the Java runtime's identityHashCode, or a custom scheme.

Specified by:

computeHashCode in interface HashingStrategy<K>

Parameters:

object - for which the hashcode is to be computed

Returns:

the hashCode

equals

public boolean equals(K o1,
                      K o2)

Description copied from interface: HashingStrategy

Compares o1 and o2 for equality. Strategy implementers may use the objects' own equals() methods, compare object references, or implement some custom scheme.

Specified by:

equals in interface HashingStrategy<K>

Parameters:

o1 - an Object value

o2 - an Object value

Returns:

true if the objects are equal according to this strategy.