io.ray.streaming.state.keystate.state.impl

Class MapStateImpl<K,V>

java.lang.Object

io.ray.streaming.state.keystate.state.impl.MapStateImpl<K,V>

All Implemented Interfaces:

MapState<K,V>, State, UnaryState<Map<K,V>>

public class MapStateImpl<K,V>
extends Object
implements MapState<K,V>

MapState implementation.

Constructor Summary

Constructors

Constructor and Description
MapStateImpl(MapStateDescriptor<K,V> descriptor, KeyStateBackend backend)

Method Summary

Modifier and Type	Method and Description
Map<K,V>	get() get the value in state
V	get(K key) Returns the current value associated with the given key.
void	put(K key, V value) Associates a new value with the given key.
void	putAll(Map<K,V> newMap) Copies all of the mappings from the given map into the state.
void	remove(K key) Deletes the mapping of the given key.
void	setCurrentKey(Object currentKey) set current key of the state
void	update(Map<K,V> map) Resets the state value.

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.ray.streaming.state.keystate.state.MapState

contains, entries, iterator, keys, values

Constructor Detail

MapStateImpl

public MapStateImpl(MapStateDescriptor<K,V> descriptor,
                    KeyStateBackend backend)

Method Detail

get

public Map<K,V> get()

Description copied from interface: UnaryState

get the value in state

Specified by:

get in interface UnaryState<Map<K,V>>

Returns:

the value in state

get

public V get(K key)

Description copied from interface: MapState

Returns the current value associated with the given key.

Specified by:

get in interface MapState<K,V>

Parameters:

key - The key of the mapping

Returns:

The value of the mapping with the given key

put

public void put(K key,
                V value)

Description copied from interface: MapState

Associates a new value with the given key.

Specified by:

put in interface MapState<K,V>

Parameters:

key - The key of the mapping

value - The new value of the mapping

update

public void update(Map<K,V> map)

Description copied from interface: MapState

Resets the state value.

Specified by:

update in interface MapState<K,V>

Parameters:

map - The mappings for reset in this state

putAll

public void putAll(Map<K,V> newMap)

Description copied from interface: MapState

Copies all of the mappings from the given map into the state.

Specified by:

putAll in interface MapState<K,V>

Parameters:

newMap - The mappings to be stored in this state

remove

public void remove(K key)

Description copied from interface: MapState

Deletes the mapping of the given key.

Specified by:

remove in interface MapState<K,V>

Parameters:

key - The key of the mapping

setCurrentKey

public void setCurrentKey(Object currentKey)

set current key of the state

Specified by:

setCurrentKey in interface State