org.ehcache.core.spi.store

Class TransientStateHolder<K,V>

java.lang.Object

org.ehcache.core.spi.store.TransientStateHolder<K,V>

All Implemented Interfaces:

java.io.Serializable, StateHolder<K,V>

public class TransientStateHolder<K,V>
extends java.lang.Object
implements StateHolder<K,V>, java.io.Serializable

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
TransientStateHolder()

Method Summary

Modifier and Type	Method and Description
java.util.Set<java.util.Map.Entry<K,V>>	entrySet() Retrieves all the entries in the StateHolder as a Set of Map.Entry instances.
boolean	equals(java.lang.Object o)
V	get(K key) Retrieves the value mapped to the given key
int	hashCode()
V	putIfAbsent(K key, V value) If the specified key is not already associated with a value (or is mapped to null) associates it with the given value and returns null, else returns the current value.
boolean	remove(K key, V value) Removes the entry for a key only if currently mapped to a given value.

Methods inherited from class java.lang.Object

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

Constructor Detail

TransientStateHolder

public TransientStateHolder()

Method Detail

putIfAbsent

public V putIfAbsent(K key,
                     V value)

Description copied from interface: StateHolder

If the specified key is not already associated with a value (or is mapped to null) associates it with the given value and returns null, else returns the current value.

Specified by:

putIfAbsent in interface StateHolder<K,V>

Parameters:

key - a key

value - a value

Returns:

the previous value associated with the specified key, or null if there was no mapping for the key.

get

public V get(K key)

Description copied from interface: StateHolder

Retrieves the value mapped to the given key

Specified by:

get in interface StateHolder<K,V>

Parameters:

key - a key

Returns:

the value mapped to the key

remove

public boolean remove(K key,
                      V value)

Description copied from interface: StateHolder

Removes the entry for a key only if currently mapped to a given value.

Specified by:

remove in interface StateHolder<K,V>

Parameters:

key - a key with which the specified value is associated

value - value expected to be associated with the specified key

Returns:

true if the value was removed

entrySet

public java.util.Set<java.util.Map.Entry<K,V>> entrySet()

Description copied from interface: StateHolder

Retrieves all the entries in the StateHolder as a Set of Map.Entry instances.

Specified by:

entrySet in interface StateHolder<K,V>

Returns:

the set of this StateHolder mappings

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object