io.ray.streaming.state.backend

Class AbstractStateBackend

java.lang.Object

io.ray.streaming.state.backend.AbstractStateBackend

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

MemoryStateBackend

public abstract class AbstractStateBackend
extends Object
implements Serializable

This class is the abstract class for different kinds of StateBackend.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected BackendType	backendType
protected Map<String,String>	config
protected int	keyGroupIndex
protected StateStrategy	stateStrategy

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractStateBackend(Map<String,String> config)

Method Summary

Modifier and Type	Method and Description
BackendType	getBackendType()
abstract <K,S,T> KeyMapStore<K,S,T>	getKeyMapStore(String tableName)
abstract <K,S,T> KeyMapStore<K,S,T>	getKeyMapStore(String tableName, KeyMapStoreSerializer keyMapStoreSerializer)
abstract <K,V> KeyValueStore<K,V>	getKeyValueStore(String tableName)
String	getStateKey(String descName, String currentKey)
StateStrategy	getStateStrategy()
String	getTableName(AbstractStateDescriptor stateDescriptor)
void	setKeyGroupIndex(int keyGroupIndex)

Methods inherited from class java.lang.Object

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

Field Detail

config

protected final Map<String,String> config

stateStrategy

protected final StateStrategy stateStrategy

backendType

protected final BackendType backendType

keyGroupIndex

protected int keyGroupIndex

Constructor Detail

AbstractStateBackend

protected AbstractStateBackend(Map<String,String> config)

Method Detail

getKeyValueStore

public abstract <K,V> KeyValueStore<K,V> getKeyValueStore(String tableName)

getKeyMapStore

public abstract <K,S,T> KeyMapStore<K,S,T> getKeyMapStore(String tableName)

getKeyMapStore

public abstract <K,S,T> KeyMapStore<K,S,T> getKeyMapStore(String tableName,
                                                          KeyMapStoreSerializer keyMapStoreSerializer)

getBackendType

public BackendType getBackendType()

getStateStrategy

public StateStrategy getStateStrategy()

getTableName

public String getTableName(AbstractStateDescriptor stateDescriptor)

getStateKey

public String getStateKey(String descName,
                          String currentKey)

setKeyGroupIndex

public void setKeyGroupIndex(int keyGroupIndex)