org.apache.flink.queryablestate.client.state

Class ImmutableReducingState<V>

java.lang.Object

org.apache.flink.queryablestate.client.state.ImmutableReducingState<V>

All Implemented Interfaces:

org.apache.flink.api.common.state.AppendingState<V,V>, org.apache.flink.api.common.state.MergingState<V,V>, org.apache.flink.api.common.state.ReducingState<V>, org.apache.flink.api.common.state.State

public final class ImmutableReducingState<V>
extends Object
implements org.apache.flink.api.common.state.ReducingState<V>

A read-only ReducingState that does not allow for modifications.

This is the result returned when querying Flink's keyed state using the Queryable State Client and providing an ReducingStateDescriptor.

Field Summary

Fields

Modifier and Type	Field and Description
protected static UnsupportedOperationException	MODIFICATION_ATTEMPT_ERROR

Method Summary

Modifier and Type	Method and Description
void	add(V newValue)
void	clear()
static <V,S extends org.apache.flink.api.common.state.State> S	createState(org.apache.flink.api.common.state.StateDescriptor<S,V> stateDescriptor, byte[] serializedState)
V	get()

Methods inherited from class java.lang.Object

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

Field Detail

MODIFICATION_ATTEMPT_ERROR

protected static final UnsupportedOperationException MODIFICATION_ATTEMPT_ERROR

Method Detail

get

public V get()

Specified by:

get in interface org.apache.flink.api.common.state.AppendingState<V,V>

add

public void add(V newValue)

Specified by:

add in interface org.apache.flink.api.common.state.AppendingState<V,V>

clear

public void clear()

Specified by:

clear in interface org.apache.flink.api.common.state.State

createState

public static <V,S extends org.apache.flink.api.common.state.State> S createState(org.apache.flink.api.common.state.StateDescriptor<S,V> stateDescriptor,
                                                                                  byte[] serializedState)
                                                                           throws IOException

Throws:

IOException