org.springframework.cache.support

Class NullValue

java.lang.Object

org.springframework.cache.support.NullValue

All Implemented Interfaces:

Serializable

public final class NullValue
extends Object
implements Serializable

Simple serializable class that serves as a null replacement for cache stores which otherwise do not support null values.

Since:

4.2.2

Author:

Juergen Hoeller

See Also:

AbstractValueAdaptingCache, Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static Object	INSTANCE The canonical representation of a null replacement, as used by the default implementation of AbstractValueAdaptingCache.toStoreValue(java.lang.Object)/ AbstractValueAdaptingCache.fromStoreValue(java.lang.Object).

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final Object INSTANCE

The canonical representation of a null replacement, as used by the default implementation of AbstractValueAdaptingCache.toStoreValue(java.lang.Object)/ AbstractValueAdaptingCache.fromStoreValue(java.lang.Object).

Since:

4.3.10

Method Detail

equals

public boolean equals(@Nullable
                      Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object