io.druid.collections

Class CountingMap<K>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

com.metamx.common.guava.DefaultingHashMap<K,AtomicLong>

io.druid.collections.CountingMap<K>

All Implemented Interfaces:

Serializable, Cloneable, Map<K,AtomicLong>

public class CountingMap<K>
extends com.metamx.common.guava.DefaultingHashMap<K,AtomicLong>

See Also:

Serialized Form

Nested Class Summary

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

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

Constructor Summary

Constructors

Constructor and Description
CountingMap()

Method Summary

Methods

Modifier and Type	Method and Description
long	add(K key, long value)
Map<K,Long>	snapshot()

Methods inherited from class com.metamx.common.guava.DefaultingHashMap

get

Methods inherited from class java.util.HashMap

clear, clone, containsKey, containsValue, entrySet, isEmpty, keySet, put, putAll, remove, size, values

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

CountingMap

public CountingMap()

Method Detail

add

public long add(K key,
       long value)

snapshot

public Map<K,Long> snapshot()