Package org.cache2k.core

Class ConcurrentMapWrapper<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

org.cache2k.core.ConcurrentMapWrapper<K,V>

All Implemented Interfaces:

ConcurrentMap<K,V>, Map<K,V>

public class ConcurrentMapWrapper<K,V>
extends AbstractMap<K,V>
implements ConcurrentMap<K,V>

ConcurrentMap interface wrapper on top of a cache. The map interface does not cause calls to the cache source. An attached writer is called.

Author:

Jens Wilke

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K extends Object,V extends Object>, AbstractMap.SimpleImmutableEntry<K extends Object,V extends Object>

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Constructor Summary

Constructors

Constructor	Description
ConcurrentMapWrapper(InternalCache<K,V> cache)

Method Summary

Modifier and Type	Method	Description
void	clear()
V	compute(K key, BiFunction<? super K,? super V,? extends V> remappingFunction)
V	computeIfAbsent(K key, Function<? super K,? extends V> mappingFunction)
V	computeIfPresent(K key, BiFunction<? super K,? super V,? extends V> remappingFunction)
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<K,V>>	entrySet()
V	get(Object key)
V	getOrDefault(Object key, V defaultValue)	Default implementation from ConcurrentMap does not account for null values.
boolean	isEmpty()
Set<K>	keySet()
V	merge(K key, V value, BiFunction<? super V,? super V,? extends V> remappingFunction)	Default from ConcurrentMap not working because of null values.
V	put(K key, V value)
void	putAll(Map<? extends K,? extends V> m)
V	putIfAbsent(K key, V value)	We cannot use Cache.putIfAbsent(Object, Object) since the map returns the value.
V	remove(Object key)
boolean	remove(Object key, Object value)
V	replace(K key, V value)
boolean	replace(K key, V oldValue, V newValue)
int	size()
Collection<V>	values()

Methods inherited from class java.util.AbstractMap

clone, equals, hashCode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.concurrent.ConcurrentMap

forEach, replaceAll

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

ConcurrentMapWrapper

public ConcurrentMapWrapper(InternalCache<K,V> cache)

Method Detail

putIfAbsent

public V putIfAbsent(K key,
                     V value)

We cannot use Cache.putIfAbsent(Object, Object) since the map returns the value.

Specified by:

putIfAbsent in interface ConcurrentMap<K,V>

Specified by:

putIfAbsent in interface Map<K,V>

remove

public boolean remove(Object key,
                      Object value)

Specified by:

remove in interface ConcurrentMap<K,V>

Specified by:

remove in interface Map<K,V>

replace

public boolean replace(K key,
                       V oldValue,
                       V newValue)

Specified by:

replace in interface ConcurrentMap<K,V>

Specified by:

replace in interface Map<K,V>

replace

public V replace(K key,
                 V value)

Specified by:

replace in interface ConcurrentMap<K,V>

Specified by:

replace in interface Map<K,V>

size

public int size()

Specified by:

size in interface Map<K,V>

Overrides:

size in class AbstractMap<K,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,V>

Overrides:

isEmpty in class AbstractMap<K,V>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<K,V>

Overrides:

containsKey in class AbstractMap<K,V>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<K,V>

Overrides:

containsValue in class AbstractMap<K,V>

get

public V get(Object key)

Specified by:

get in interface Map<K,V>

Overrides:

get in class AbstractMap<K,V>

put

public V put(K key,
             V value)

Specified by:

put in interface Map<K,V>

Overrides:

put in class AbstractMap<K,V>

remove

public V remove(Object key)

Specified by:

remove in interface Map<K,V>

Overrides:

remove in class AbstractMap<K,V>

putAll

public void putAll(Map<? extends K,? extends V> m)

Specified by:

putAll in interface Map<K,V>

Overrides:

putAll in class AbstractMap<K,V>

clear

public void clear()

Specified by:

clear in interface Map<K,V>

Overrides:

clear in class AbstractMap<K,V>

keySet

public Set<K> keySet()

Specified by:

keySet in interface Map<K,V>

Overrides:

keySet in class AbstractMap<K,V>

values

public Collection<V> values()

Specified by:

values in interface Map<K,V>

Overrides:

values in class AbstractMap<K,V>

entrySet

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

Specified by:

entrySet in interface Map<K,V>

Specified by:

entrySet in class AbstractMap<K,V>

computeIfAbsent

public V computeIfAbsent(K key,
                         Function<? super K,? extends V> mappingFunction)

Specified by:

computeIfAbsent in interface ConcurrentMap<K,V>

Specified by:

computeIfAbsent in interface Map<K,V>

computeIfPresent

public V computeIfPresent(K key,
                          BiFunction<? super K,? super V,? extends V> remappingFunction)

Specified by:

computeIfPresent in interface ConcurrentMap<K,V>

Specified by:

computeIfPresent in interface Map<K,V>

compute

public V compute(K key,
                 BiFunction<? super K,? super V,? extends V> remappingFunction)

Specified by:

compute in interface ConcurrentMap<K,V>

Specified by:

compute in interface Map<K,V>

getOrDefault

public V getOrDefault(Object key,
                      V defaultValue)

Default implementation from ConcurrentMap does not account for null values.

Specified by:

getOrDefault in interface ConcurrentMap<K,V>

Specified by:

getOrDefault in interface Map<K,V>

merge

public V merge(K key,
               V value,
               BiFunction<? super V,? super V,? extends V> remappingFunction)

Default from ConcurrentMap not working because of null values.

Specified by:

merge in interface ConcurrentMap<K,V>

Specified by:

merge in interface Map<K,V>