org.apache.flink.runtime.state.v2

Class InternalKeyedState<K,V>

java.lang.Object

org.apache.flink.runtime.state.v2.InternalKeyedState<K,V>

Type Parameters:

K - The type of key the state is associated to.

V - The type of values kept internally in state.

All Implemented Interfaces:

org.apache.flink.api.common.state.v2.State

Direct Known Subclasses:

InternalAggregatingState, InternalListState, InternalMapState, InternalReducingState, InternalValueState

@Internal
public abstract class InternalKeyedState<K,V>
extends Object
implements org.apache.flink.api.common.state.v2.State

The InternalKeyedState is the root of the internal state type hierarchy, similar to the State being the root of the public API state hierarchy.

The public API state hierarchy is intended to be programmed against by Flink applications. The internal state hierarchy holds all the auxiliary methods that communicates with AsyncExecutionController and not intended to be used by user applications.

Constructor Summary

Constructors

Constructor and Description
InternalKeyedState(StateRequestHandler stateRequestHandler, StateDescriptor<V> stateDescriptor) Creates a new InternalKeyedState with the given asyncExecutionController and stateDescriptor.

Method Summary

Modifier and Type	Method and Description
org.apache.flink.api.common.state.v2.StateFuture<Void>	asyncClear()
StateDescriptor<V>	getStateDescriptor() Return specific StateDescriptor.
org.apache.flink.api.common.typeutils.TypeSerializer<V>	getValueSerializer() Return related value serializer.
protected <IN,OUT> org.apache.flink.api.common.state.v2.StateFuture<OUT>	handleRequest(StateRequestType stateRequestType, IN payload) Submit a state request to AEC.

Methods inherited from class java.lang.Object

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

Constructor Detail

InternalKeyedState

public InternalKeyedState(StateRequestHandler stateRequestHandler,
                          StateDescriptor<V> stateDescriptor)

Creates a new InternalKeyedState with the given asyncExecutionController and stateDescriptor.

Method Detail

handleRequest

protected final <IN,OUT> org.apache.flink.api.common.state.v2.StateFuture<OUT> handleRequest(StateRequestType stateRequestType,
                                                                                             IN payload)

Submit a state request to AEC.

Parameters:

stateRequestType - the type of this request.

payload - the payload input for this request.

Returns:

the state future.

asyncClear

public final org.apache.flink.api.common.state.v2.StateFuture<Void> asyncClear()

Specified by:

asyncClear in interface org.apache.flink.api.common.state.v2.State

getStateDescriptor

public StateDescriptor<V> getStateDescriptor()

Return specific StateDescriptor.

getValueSerializer

public org.apache.flink.api.common.typeutils.TypeSerializer<V> getValueSerializer()

Return related value serializer.