org.apache.kafka.timeline

Class TimelineHashMap<K,V>

java.lang.Object

org.apache.kafka.timeline.TimelineHashMap<K,V>

Type Parameters:

K - The key type of the set.

V - The value type of the set.

All Implemented Interfaces:

Map<K,V>

public class TimelineHashMap<K,V>
extends Object
implements Map<K,V>

This is a hash map which can be snapshotted. See for more details about the implementation. This class requires external synchronization. Null keys and values are not supported.

Nested Class Summary

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

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
TimelineHashMap(SnapshotRegistry snapshotRegistry, int expectedSize)

Method Summary

Modifier and Type	Method and Description
void	clear()
boolean	containsKey(Object key)
boolean	containsKey(Object key, long epoch)
boolean	containsValue(Object value)
Set<Map.Entry<K,V>>	entrySet()
Set<Map.Entry<K,V>>	entrySet(long epoch)
boolean	equals(Object o)
void	executeRevert(long targetEpoch, org.apache.kafka.timeline.Delta delta) Revert to the target epoch.
V	get(Object key)
V	get(Object key, long epoch)
int	hashCode()
boolean	isEmpty()
boolean	isEmpty(long epoch)
Set<K>	keySet()
Set<K>	keySet(long epoch)
V	put(K key, V value)
void	putAll(Map<? extends K,? extends V> map)
V	remove(Object key)
void	reset() Reverts to the initial value.
int	size()
int	size(long epoch)
Collection<V>	values()
Collection<V>	values(long epoch)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Detail

TimelineHashMap

public TimelineHashMap(SnapshotRegistry snapshotRegistry,
                       int expectedSize)

Method Detail

size

public int size()

Specified by:

size in interface Map<K,V>

size

public int size(long epoch)

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,V>

isEmpty

public boolean isEmpty(long epoch)

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<K,V>

containsKey

public boolean containsKey(Object key,
                           long epoch)

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<K,V>

get

public V get(Object key)

Specified by:

get in interface Map<K,V>

get

public V get(Object key,
             long epoch)

put

public V put(K key,
             V value)

Specified by:

put in interface Map<K,V>

remove

public V remove(Object key)

Specified by:

remove in interface Map<K,V>

putAll

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

Specified by:

putAll in interface Map<K,V>

clear

public void clear()

Specified by:

clear in interface Map<K,V>

keySet

public Set<K> keySet()

Specified by:

keySet in interface Map<K,V>

keySet

public Set<K> keySet(long epoch)

values

public Collection<V> values()

Specified by:

values in interface Map<K,V>

values

public Collection<V> values(long epoch)

entrySet

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

Specified by:

entrySet in interface Map<K,V>

entrySet

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

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<K,V>

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<K,V>

Overrides:

equals in class Object

executeRevert

public void executeRevert(long targetEpoch,
                          org.apache.kafka.timeline.Delta delta)

Revert to the target epoch.

Parameters:

targetEpoch - The epoch to revert to.

delta - The delta associated with this epoch for this object.

reset

public void reset()

Reverts to the initial value.