org.apache.flink.runtime.state.memory

Class MemFoldingState<K,N,T,ACC>

java.lang.Object

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

org.apache.flink.runtime.state.memory.AbstractMemState<K,N,ACC,org.apache.flink.api.common.state.FoldingState<T,ACC>,org.apache.flink.api.common.state.FoldingStateDescriptor<T,ACC>>

org.apache.flink.runtime.state.memory.MemFoldingState<K,N,T,ACC>

Type Parameters:

K - The type of the key.

N - The type of the namespace.

T - The type of the values that can be folded into the state.

ACC - The type of the value in the folding state.

All Implemented Interfaces:

org.apache.flink.api.common.state.AppendingState<T,ACC>, org.apache.flink.api.common.state.FoldingState<T,ACC>, org.apache.flink.api.common.state.State, KvState<K,N,org.apache.flink.api.common.state.FoldingState<T,ACC>,org.apache.flink.api.common.state.FoldingStateDescriptor<T,ACC>,MemoryStateBackend>

public class MemFoldingState<K,N,T,ACC>
extends AbstractMemState<K,N,ACC,org.apache.flink.api.common.state.FoldingState<T,ACC>,org.apache.flink.api.common.state.FoldingStateDescriptor<T,ACC>>
implements org.apache.flink.api.common.state.FoldingState<T,ACC>

Heap-backed partitioned FoldingState that is snapshotted into a serialized memory copy.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MemFoldingState.Snapshot<K,N,T,ACC>

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
MemFoldingState(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer, org.apache.flink.api.common.state.FoldingStateDescriptor<T,ACC> stateDesc)
MemFoldingState(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer, org.apache.flink.api.common.state.FoldingStateDescriptor<T,ACC> stateDesc, HashMap<N,Map<K,ACC>> state)

Method Summary

Modifier and Type	Method and Description
void	add(T value)
KvStateSnapshot<K,N,org.apache.flink.api.common.state.FoldingState<T,ACC>,org.apache.flink.api.common.state.FoldingStateDescriptor<T,ACC>,MemoryStateBackend>	createHeapSnapshot(byte[] bytes)
ACC	get()

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

MemFoldingState

public MemFoldingState(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                       org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer,
                       org.apache.flink.api.common.state.FoldingStateDescriptor<T,ACC> stateDesc)

MemFoldingState

public MemFoldingState(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                       org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer,
                       org.apache.flink.api.common.state.FoldingStateDescriptor<T,ACC> stateDesc,
                       HashMap<N,Map<K,ACC>> state)

Method Detail

get

public ACC get()

Specified by:

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

add

public void add(T value)
         throws IOException

Specified by:

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

Throws:

IOException

createHeapSnapshot

public KvStateSnapshot<K,N,org.apache.flink.api.common.state.FoldingState<T,ACC>,org.apache.flink.api.common.state.FoldingStateDescriptor<T,ACC>,MemoryStateBackend> createHeapSnapshot(byte[] bytes)

Specified by:

createHeapSnapshot in class AbstractMemState<K,N,ACC,org.apache.flink.api.common.state.FoldingState<T,ACC>,org.apache.flink.api.common.state.FoldingStateDescriptor<T,ACC>>