io.ray.streaming.state.backend

Class KeyStateBackend

java.lang.Object

io.ray.streaming.state.backend.AbstractKeyStateBackend

io.ray.streaming.state.backend.KeyStateBackend

All Implemented Interfaces:

StateStoreManager

public class KeyStateBackend
extends AbstractKeyStateBackend

key state backend manager, managing different kinds of states in different thread. This class is not thread safe.

Field Summary

Fields

Modifier and Type	Field and Description
protected KeyGroup	keyGroup
protected int	numberOfKeyGroups

Fields inherited from class io.ray.streaming.state.backend.AbstractKeyStateBackend

backStorageCache, currentCheckpointId, currentKey, descNamespace, keyGroupIndex, listManagerProxyHashMap, mapManagerProxyHashMap, valueManagerProxyHashMap

Constructor Summary

Constructors

Constructor and Description
KeyStateBackend(int numberOfKeyGroups, KeyGroup keyGroup, AbstractStateBackend abstractStateBackend)

Method Summary

Modifier and Type	Method and Description
void	close()
KeyGroup	getKeyGroup()
<T> ListState<T>	getListState(ListStateDescriptor<T> stateDescriptor)
<S,T> MapState<S,T>	getMapState(MapStateDescriptor<S,T> stateDescriptor)
int	getNumberOfKeyGroups()
<T> ValueState<T>	getValueState(ValueStateDescriptor<T> stateDescriptor)
protected <T> ListStateStoreManagerProxy<T>	newListStateProxy(ListStateDescriptor<T> stateDescriptor) get new list state proxy
protected <S,T> MapStateStoreManagerProxy<S,T>	newMapStateProxy(MapStateDescriptor<S,T> stateDescriptor) get map state proxy
protected <T> ValueStateStoreManagerProxy<T>	newValueStateProxy(ValueStateDescriptor<T> stateDescriptor) get new value state proxy
void	setCurrentKey(Object currentKey)

Methods inherited from class io.ray.streaming.state.backend.AbstractKeyStateBackend

ackCommit, commit, finish, get, getBackend, getBackendType, getBackStorage, getBackStorage, getCheckpointId, getCurrentKey, getKeyGroupIndex, getStateStrategy, put, rollBack, setCheckpointId, setContext, setKeyGroupIndex

Methods inherited from class java.lang.Object

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

Field Detail

numberOfKeyGroups

protected final int numberOfKeyGroups

keyGroup

protected final KeyGroup keyGroup

Constructor Detail

KeyStateBackend

public KeyStateBackend(int numberOfKeyGroups,
                       KeyGroup keyGroup,
                       AbstractStateBackend abstractStateBackend)

Method Detail

newValueStateProxy

protected <T> ValueStateStoreManagerProxy<T> newValueStateProxy(ValueStateDescriptor<T> stateDescriptor)

get new value state proxy

getValueState

public <T> ValueState<T> getValueState(ValueStateDescriptor<T> stateDescriptor)

newListStateProxy

protected <T> ListStateStoreManagerProxy<T> newListStateProxy(ListStateDescriptor<T> stateDescriptor)

get new list state proxy

getListState

public <T> ListState<T> getListState(ListStateDescriptor<T> stateDescriptor)

newMapStateProxy

protected <S,T> MapStateStoreManagerProxy<S,T> newMapStateProxy(MapStateDescriptor<S,T> stateDescriptor)

get map state proxy

getMapState

public <S,T> MapState<S,T> getMapState(MapStateDescriptor<S,T> stateDescriptor)

setCurrentKey

public void setCurrentKey(Object currentKey)

Specified by:

setCurrentKey in class AbstractKeyStateBackend

getNumberOfKeyGroups

public int getNumberOfKeyGroups()

getKeyGroup

public KeyGroup getKeyGroup()

close

public void close()