org.apache.flink.runtime.state.heap

Class StateTableByKeyGroupReaders

java.lang.Object

org.apache.flink.runtime.state.heap.StateTableByKeyGroupReaders

@Internal
public class StateTableByKeyGroupReaders
extends Object

This class provides a static factory method to create different implementations of StateSnapshotKeyGroupReader depending on the provided serialization format version.

The implementations are also located here as inner classes.

Constructor Summary

Constructors

Constructor and Description
StateTableByKeyGroupReaders()

Method Summary

Modifier and Type	Method and Description
static <K,N,S> StateSnapshotKeyGroupReader	readerForVersion(StateTable<K,N,S> stateTable, int version) Creates a new StateTableByKeyGroupReader that inserts de-serialized mappings into the given table, using the de-serialization algorithm that matches the given version.

Methods inherited from class java.lang.Object

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

Constructor Detail

StateTableByKeyGroupReaders

public StateTableByKeyGroupReaders()

Method Detail

readerForVersion

public static <K,N,S> StateSnapshotKeyGroupReader readerForVersion(StateTable<K,N,S> stateTable,
                                                                   int version)

Creates a new StateTableByKeyGroupReader that inserts de-serialized mappings into the given table, using the de-serialization algorithm that matches the given version.

Type Parameters:

K - type of key.

N - type of namespace.

S - type of state.

Parameters:

stateTable - the StateTable into which de-serialized mappings are inserted.

version - version for the de-serialization algorithm.

Returns:

the appropriate reader.