QueryableStateStream (Flink : 2.0-SNAPSHOT API)

java.lang.Object
- org.apache.flink.streaming.api.datastream.QueryableStateStream<K,V>

Type Parameters:

K - State key type

V - State value type
```
@PublicEvolving
@Deprecated
public class QueryableStateStream<K,V>
extends Object
```
Deprecated.
The Queryable State feature is deprecated since Flink 1.18, and will be removed in a future Flink major version.

Queryable state stream instance.

Constructor Summary

Constructors
Constructor	Description
`QueryableStateStream(String queryableStateName, StateDescriptor<?,V> stateDescriptor, TypeSerializer<K> keySerializer)`	Deprecated. Creates a queryable state stream.

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`TypeSerializer<K>`	`getKeySerializer()`	Deprecated. Returns the key serializer for the queryable state instance.
`String`	`getQueryableStateName()`	Deprecated. Returns the name under which the state can be queried.
`StateDescriptor<?,V>`	`getStateDescriptor()`	Deprecated. Returns the state descriptor for the queryable state instance.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - QueryableStateStream
```
public QueryableStateStream(String queryableStateName,
                            StateDescriptor<?,V> stateDescriptor,
                            TypeSerializer<K> keySerializer)
```
    Deprecated.
    
    Creates a queryable state stream.
    
    Parameters:
    
    queryableStateName - Name under which to publish the queryable state instance
    
    stateDescriptor - The state descriptor for the state instance
    
    keySerializer - Key serializer for the state instance
- Method Detail
  - getQueryableStateName
```
public String getQueryableStateName()
```
    Deprecated.
    
    Returns the name under which the state can be queried.
    
    Returns:
    
    Name under which state can be queried.
  - getKeySerializer
```
public TypeSerializer<K> getKeySerializer()
```
    Deprecated.
    
    Returns the key serializer for the queryable state instance.
    
    Returns:
    
    Key serializer for the state instance.
  - getStateDescriptor
```
public StateDescriptor<?,V> getStateDescriptor()
```
    Deprecated.
    
    Returns the state descriptor for the queryable state instance.
    
    Returns:
    
    State descriptor for the state instance