Package org.opendaylight.yangtools.util

Class ForwardingIdentityObject<T>

java.lang.Object

com.google.common.collect.ForwardingObject

org.opendaylight.yangtools.util.ForwardingIdentityObject<T>

Type Parameters:

T - Type of wrapped object

All Implemented Interfaces:

Delegator<T>

@Beta
@NonNullByDefault
public abstract class ForwardingIdentityObject<T>
extends ForwardingObject
implements Delegator<T>

A ForwardingObject which additionally masks hashCode()/equals(Object) of a delegate object, so that it can be a data transfer object with data-dependent implementations of those contracts can be use in collections and maps which need to work on identity. This is useful in situations where identity equality needs to be used with the conjunction with the collections library, for example ConcurrentHashMap. All instances are considered equal if they refer to the same delegate object.

Note this class forms its own equality domain, and its use may lead to surprising results, especially where ForwardingObject.toString() is involved. For example a Map.toString() may end up emitting two keys which have the same String representation.

Author:

Robert Varga

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ForwardingIdentityObject()

Method Summary

Modifier and Type	Method	Description
protected abstract @NonNull T	delegate()
final boolean	equals(@Nullable Object obj)
final @NonNull T	getDelegate()	Return underlying delegate.
final int	hashCode()
static <T> ForwardingIdentityObject<T>	of(T obj)

Methods inherited from class com.google.common.collect.ForwardingObject

toString

Methods inherited from class java.lang.Object

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

Constructor Details

ForwardingIdentityObject

protected ForwardingIdentityObject()

Method Details

of

public static <T> ForwardingIdentityObject<T> of(T obj)

getDelegate

public final @NonNull T getDelegate()

Description copied from interface: Delegator

Return underlying delegate.

Specified by:

getDelegate in interface Delegator<T>

Returns:

underlying delegate.

hashCode

public final int hashCode()

Overrides:

hashCode in class Object

equals

public final boolean equals(@Nullable Object obj)

Overrides:

equals in class Object

delegate

protected abstract @NonNull T delegate()

Specified by:

delegate in class ForwardingObject