org.apache.flink.runtime.state.heap

Class NestedStateMapSnapshot<K,N,S>

java.lang.Object

org.apache.flink.runtime.state.heap.StateMapSnapshot<K,N,S,NestedStateMap<K,N,S>>

org.apache.flink.runtime.state.heap.NestedStateMapSnapshot<K,N,S>

Type Parameters:

K - type of key

N - type of namespace

S - type of state

public class NestedStateMapSnapshot<K,N,S>
extends StateMapSnapshot<K,N,S,NestedStateMap<K,N,S>>

This class represents the snapshot of a NestedStateMap.

Field Summary

Fields inherited from class org.apache.flink.runtime.state.heap.StateMapSnapshot

owningStateMap

Constructor Summary

Constructors

Constructor and Description
NestedStateMapSnapshot(NestedStateMap<K,N,S> owningStateMap) Creates a new NestedStateMapSnapshot.

Method Summary

Modifier and Type	Method and Description
void	writeState(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer, org.apache.flink.api.common.typeutils.TypeSerializer<S> stateSerializer, org.apache.flink.core.memory.DataOutputView dov, StateSnapshotTransformer<S> stateSnapshotTransformer) Writes the state in this snapshot to output.

Methods inherited from class org.apache.flink.runtime.state.heap.StateMapSnapshot

isOwner, release

Methods inherited from class java.lang.Object

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

Constructor Detail

NestedStateMapSnapshot

public NestedStateMapSnapshot(NestedStateMap<K,N,S> owningStateMap)

Creates a new NestedStateMapSnapshot.

Parameters:

owningStateMap - the NestedStateMap for which this object represents a snapshot.

Method Detail

writeState

public void writeState(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                       org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer,
                       org.apache.flink.api.common.typeutils.TypeSerializer<S> stateSerializer,
                       @Nonnull
                       org.apache.flink.core.memory.DataOutputView dov,
                       @Nullable
                       StateSnapshotTransformer<S> stateSnapshotTransformer)
                throws IOException

Description copied from class: StateMapSnapshot

Writes the state in this snapshot to output. The state need to be transformed with the given transformer if the transformer is non-null.

Specified by:

writeState in class StateMapSnapshot<K,N,S,NestedStateMap<K,N,S>>

Parameters:

keySerializer - the key serializer.

namespaceSerializer - the namespace serializer.

stateSerializer - the state serializer.

dov - the output.

stateSnapshotTransformer - state transformer, and can be null.

Throws:

IOException - on write-related problems.