StateTableByKeyGroupReaders (Flink : Runtime 2.0.1 API)

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 Description

StateTableByKeyGroupReaders()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	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.