org.apache.kafka.common.utils
Class CopyOnWriteMap<K,V>

java.lang.Object
  org.apache.kafka.common.utils.CopyOnWriteMap<K,V>

All Implemented Interfaces:

java.util.concurrent.ConcurrentMap<K,V>, java.util.Map<K,V>

public class CopyOnWriteMap<K,V>
extends java.lang.Object
implements java.util.concurrent.ConcurrentMap<K,V>

A simple read-optimized map implementation that synchronizes only writes and does a full copy on each modification

Nested Class Summary

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

java.util.Map.Entry<K,V>

Constructor Summary

CopyOnWriteMap()

CopyOnWriteMap(java.util.Map<K,V> map)

Method Summary

void	clear()
boolean	containsKey(java.lang.Object k)
boolean	containsValue(java.lang.Object v)
java.util.Set<java.util.Map.Entry<K,V>>	entrySet()
V	get(java.lang.Object k)
boolean	isEmpty()
java.util.Set<K>	keySet()
V	put(K k, V v)
void	putAll(java.util.Map<? extends K,? extends V> entries)
V	putIfAbsent(K k, V v)
V	remove(java.lang.Object key)
boolean	remove(java.lang.Object k, java.lang.Object v)
V	replace(K k, V v)
boolean	replace(K k, V original, V replacement)
int	size()
java.util.Collection<V>	values()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

CopyOnWriteMap

public CopyOnWriteMap()

CopyOnWriteMap

public CopyOnWriteMap(java.util.Map<K,V> map)

Method Detail

containsKey

public boolean containsKey(java.lang.Object k)

Specified by:

containsKey in interface java.util.Map<K,V>

containsValue

public boolean containsValue(java.lang.Object v)

Specified by:

containsValue in interface java.util.Map<K,V>

entrySet

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

Specified by:

entrySet in interface java.util.Map<K,V>

get

public V get(java.lang.Object k)

Specified by:

get in interface java.util.Map<K,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Map<K,V>

keySet

public java.util.Set<K> keySet()

Specified by:

keySet in interface java.util.Map<K,V>

size

public int size()

Specified by:

size in interface java.util.Map<K,V>

values

public java.util.Collection<V> values()

Specified by:

values in interface java.util.Map<K,V>

clear

public void clear()

Specified by:

clear in interface java.util.Map<K,V>

put

public V put(K k,
             V v)

Specified by:

put in interface java.util.Map<K,V>

putAll

public void putAll(java.util.Map<? extends K,? extends V> entries)

Specified by:

putAll in interface java.util.Map<K,V>

remove

public V remove(java.lang.Object key)

Specified by:

remove in interface java.util.Map<K,V>

putIfAbsent

public V putIfAbsent(K k,
                     V v)

Specified by:

putIfAbsent in interface java.util.concurrent.ConcurrentMap<K,V>

remove

public boolean remove(java.lang.Object k,
                      java.lang.Object v)

Specified by:

remove in interface java.util.concurrent.ConcurrentMap<K,V>

replace

public boolean replace(K k,
                       V original,
                       V replacement)

Specified by:

replace in interface java.util.concurrent.ConcurrentMap<K,V>

replace

public V replace(K k,
                 V v)

Specified by:

replace in interface java.util.concurrent.ConcurrentMap<K,V>