org.apache.flink.streaming.api.datastream

Class QueryableStateStream<K,V>

java.lang.Object

org.apache.flink.streaming.api.datastream.QueryableStateStream<K,V>

Type Parameters:

K - State key type

V - State value type

@PublicEvolving
public class QueryableStateStream<K,V>
extends Object

Queryable state stream instance.

Constructor Summary

Constructors

Constructor and Description
QueryableStateStream(String queryableStateName, org.apache.flink.api.common.state.StateDescriptor<?,V> stateDescriptor, org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer) Creates a queryable state stream.

Method Summary

Modifier and Type	Method and Description
org.apache.flink.api.common.typeutils.TypeSerializer<K>	getKeySerializer() Returns the key serializer for the queryable state instance.
String	getQueryableStateName() Returns the name under which the state can be queried.
org.apache.flink.api.common.state.StateDescriptor<?,V>	getStateDescriptor() Returns the state descriptor for the queryable state instance.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryableStateStream

public QueryableStateStream(String queryableStateName,
                            org.apache.flink.api.common.state.StateDescriptor<?,V> stateDescriptor,
                            org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer)

Creates a queryable state stream.

Parameters:

queryableStateName - Name under which to publish the queryable state instance

stateDescriptor - The state descriptor for the state instance

keySerializer - Key serializer for the state instance

Method Detail

getQueryableStateName

public String getQueryableStateName()

Returns the name under which the state can be queried.

Returns:

Name under which state can be queried.

getKeySerializer

public org.apache.flink.api.common.typeutils.TypeSerializer<K> getKeySerializer()

Returns the key serializer for the queryable state instance.

Returns:

Key serializer for the state instance.

getStateDescriptor

public org.apache.flink.api.common.state.StateDescriptor<?,V> getStateDescriptor()

Returns the state descriptor for the queryable state instance.

Returns:

State descriptor for the state instance