org.apache.flink.runtime.state.memory

Class MemValueState<K,N,V>

java.lang.Object

org.apache.flink.runtime.state.AbstractHeapState<K,N,SV,S,SD,MemoryStateBackend>

org.apache.flink.runtime.state.memory.AbstractMemState<K,N,V,org.apache.flink.api.common.state.ValueState<V>,org.apache.flink.api.common.state.ValueStateDescriptor<V>>

org.apache.flink.runtime.state.memory.MemValueState<K,N,V>

Type Parameters:

K - The type of the key.

N - The type of the namespace.

V - The type of the value.

All Implemented Interfaces:

org.apache.flink.api.common.state.OperatorState<V>, org.apache.flink.api.common.state.State, org.apache.flink.api.common.state.ValueState<V>, KvState<K,N,org.apache.flink.api.common.state.ValueState<V>,org.apache.flink.api.common.state.ValueStateDescriptor<V>,MemoryStateBackend>

public class MemValueState<K,N,V>
extends AbstractMemState<K,N,V,org.apache.flink.api.common.state.ValueState<V>,org.apache.flink.api.common.state.ValueStateDescriptor<V>>
implements org.apache.flink.api.common.state.ValueState<V>

Heap-backed key/value state that is snapshotted into a serialized memory copy.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MemValueState.Snapshot<K,N,V>

Field Summary

Fields inherited from class org.apache.flink.runtime.state.AbstractHeapState

currentKey, currentNamespace, currentNSState, keySerializer, namespaceSerializer, state, stateDesc, stateSerializer

Constructor Summary

Constructors

Constructor and Description
MemValueState(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer, org.apache.flink.api.common.state.ValueStateDescriptor<V> stateDesc)
MemValueState(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer, org.apache.flink.api.common.state.ValueStateDescriptor<V> stateDesc, HashMap<N,Map<K,V>> state)

Method Summary

Modifier and Type	Method and Description
KvStateSnapshot<K,N,org.apache.flink.api.common.state.ValueState<V>,org.apache.flink.api.common.state.ValueStateDescriptor<V>,MemoryStateBackend>	createHeapSnapshot(byte[] bytes)
void	update(V value)
V	value()

Methods inherited from class org.apache.flink.runtime.state.memory.AbstractMemState

snapshot

Methods inherited from class org.apache.flink.runtime.state.AbstractHeapState

clear, dispose, getKeySerializer, getNamespaceSerializer, setCurrentKey, setCurrentNamespace, size

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.api.common.state.State

clear

Constructor Detail

MemValueState

public MemValueState(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                     org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer,
                     org.apache.flink.api.common.state.ValueStateDescriptor<V> stateDesc)

MemValueState

public MemValueState(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                     org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer,
                     org.apache.flink.api.common.state.ValueStateDescriptor<V> stateDesc,
                     HashMap<N,Map<K,V>> state)

Method Detail

value

public V value()

Specified by:

value in interface org.apache.flink.api.common.state.OperatorState<V>

Specified by:

value in interface org.apache.flink.api.common.state.ValueState<V>

update

public void update(V value)

Specified by:

update in interface org.apache.flink.api.common.state.OperatorState<V>

Specified by:

update in interface org.apache.flink.api.common.state.ValueState<V>

createHeapSnapshot

public KvStateSnapshot<K,N,org.apache.flink.api.common.state.ValueState<V>,org.apache.flink.api.common.state.ValueStateDescriptor<V>,MemoryStateBackend> createHeapSnapshot(byte[] bytes)

Specified by:

createHeapSnapshot in class AbstractMemState<K,N,V,org.apache.flink.api.common.state.ValueState<V>,org.apache.flink.api.common.state.ValueStateDescriptor<V>>