org.apache.flink.runtime.state.heap

Class HeapMapState<K,N,UK,UV>

java.lang.Object

org.apache.flink.runtime.state.heap.AbstractHeapState<K,N,HashMap<UK,UV>,org.apache.flink.api.common.state.MapState<UK,UV>,org.apache.flink.api.common.state.MapStateDescriptor<UK,UV>>

org.apache.flink.runtime.state.heap.HeapMapState<K,N,UK,UV>

Type Parameters:

K - The type of the key.

N - The type of the namespace.

UK - The type of the keys in the state.

UV - The type of the values in the state.

All Implemented Interfaces:

org.apache.flink.api.common.state.MapState<UK,UV>, org.apache.flink.api.common.state.State, InternalKvState<N>, InternalMapState<N,UK,UV>

public class HeapMapState<K,N,UK,UV>
extends AbstractHeapState<K,N,HashMap<UK,UV>,org.apache.flink.api.common.state.MapState<UK,UV>,org.apache.flink.api.common.state.MapStateDescriptor<UK,UV>>
implements InternalMapState<N,UK,UV>

Heap-backed partitioned MapState that is snapshotted into files.

Field Summary

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

currentNamespace, keySerializer, namespaceSerializer, stateDesc, stateTable

Constructor Summary

Constructors

Constructor and Description
HeapMapState(org.apache.flink.api.common.state.MapStateDescriptor<UK,UV> stateDesc, StateTable<K,N,HashMap<UK,UV>> stateTable, org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer) Creates a new key/value state for the given hash map of key/value pairs.

Method Summary

Modifier and Type	Method and Description
boolean	contains(UK userKey)
Iterable<Map.Entry<UK,UV>>	entries()
UV	get(UK userKey)
byte[]	getSerializedValue(K key, N namespace)
Iterator<Map.Entry<UK,UV>>	iterator()
Iterable<UK>	keys()
void	put(UK userKey, UV userValue)
void	putAll(Map<UK,UV> value)
void	remove(UK userKey)
Iterable<UV>	values()

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

clear, getSerializedValue, getStateTable, setCurrentNamespace

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.runtime.state.internal.InternalKvState

getSerializedValue, setCurrentNamespace

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

clear

Constructor Detail

HeapMapState

public HeapMapState(org.apache.flink.api.common.state.MapStateDescriptor<UK,UV> stateDesc,
                    StateTable<K,N,HashMap<UK,UV>> stateTable,
                    org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                    org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer)

Creates a new key/value state for the given hash map of key/value pairs.

Parameters:

stateDesc - The state identifier for the state. This contains name and can create a default state value.

stateTable - The state tab;e to use in this kev/value state. May contain initial state.

Method Detail

get

public UV get(UK userKey)

Specified by:

get in interface org.apache.flink.api.common.state.MapState<UK,UV>

put

public void put(UK userKey,
                UV userValue)

Specified by:

put in interface org.apache.flink.api.common.state.MapState<UK,UV>

putAll

public void putAll(Map<UK,UV> value)

Specified by:

putAll in interface org.apache.flink.api.common.state.MapState<UK,UV>

remove

public void remove(UK userKey)

Specified by:

remove in interface org.apache.flink.api.common.state.MapState<UK,UV>

contains

public boolean contains(UK userKey)

Specified by:

contains in interface org.apache.flink.api.common.state.MapState<UK,UV>

entries

public Iterable<Map.Entry<UK,UV>> entries()

Specified by:

entries in interface org.apache.flink.api.common.state.MapState<UK,UV>

keys

public Iterable<UK> keys()

Specified by:

keys in interface org.apache.flink.api.common.state.MapState<UK,UV>

values

public Iterable<UV> values()

Specified by:

values in interface org.apache.flink.api.common.state.MapState<UK,UV>

iterator

public Iterator<Map.Entry<UK,UV>> iterator()

Specified by:

iterator in interface org.apache.flink.api.common.state.MapState<UK,UV>

getSerializedValue

public byte[] getSerializedValue(K key,
                                 N namespace)
                          throws IOException

Overrides:

getSerializedValue in class AbstractHeapState<K,N,HashMap<UK,UV>,org.apache.flink.api.common.state.MapState<UK,UV>,org.apache.flink.api.common.state.MapStateDescriptor<UK,UV>>

Throws:

IOException