java.lang.Object
- org.apache.flink.runtime.state.v2.AbstractKeyedState<K,N,ACC>
- - org.apache.flink.runtime.state.v2.AbstractAggregatingState<K,N,IN,ACC,OUT>

Type Parameters:

K - The type of key the state is associated to.

IN - The type of the values that are added into the state.

ACC - TThe type of the accumulator (intermediate aggregation state).

OUT - The type of the values that are returned from the state.

All Implemented Interfaces:

org.apache.flink.api.common.state.v2.AggregatingState<IN,OUT>, org.apache.flink.api.common.state.v2.AppendingState<IN,OUT,OUT>, org.apache.flink.api.common.state.v2.MergingState<IN,OUT,OUT>, org.apache.flink.api.common.state.v2.State, InternalAggregatingState<K,N,IN,ACC,OUT>, InternalAppendingState<K,N,IN,ACC,OUT,OUT>, InternalKeyedState<K,N,ACC>, InternalMergingState<K,N,IN,ACC,OUT,OUT>, InternalPartitionedState<N>, InternalStateAccessible<ACC>
```
public class AbstractAggregatingState<K,N,IN,ACC,OUT>
extends AbstractKeyedState<K,N,ACC>
implements InternalAggregatingState<K,N,IN,ACC,OUT>
```
The default implementation of AggregatingState, which delegates all async requests to StateRequestHandler.

Field Summary

Fields
Modifier and Type Field Description

protected org.apache.flink.api.common.functions.AggregateFunction<IN,ACC,OUT> aggregateFunction
- Fields inherited from class org.apache.flink.runtime.state.v2.AbstractKeyedState
  stateRequestHandler

Constructor Summary

Constructors
Constructor	Description
`AbstractAggregatingState(StateRequestHandler stateRequestHandler, org.apache.flink.api.common.functions.AggregateFunction<IN,ACC,OUT> aggregateFunction, org.apache.flink.api.common.typeutils.TypeSerializer<ACC> valueSerializer)`	Creates a new AbstractKeyedState with the given asyncExecutionController and stateDescriptor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`add(IN value)`
`org.apache.flink.api.common.state.v2.StateFuture<Void>`	`asyncAdd(IN value)`
`org.apache.flink.api.common.state.v2.StateFuture<OUT>`	`asyncGet()`
`org.apache.flink.api.common.state.v2.StateFuture<ACC>`	`asyncGetInternal()`	Get internally stored value.
`org.apache.flink.api.common.state.v2.StateFuture<Void>`	`asyncMergeNamespaces(N target, Collection<N> sources)`	Merges the state of the current key for the given source namespaces into the state of the target namespace.
`org.apache.flink.api.common.state.v2.StateFuture<Void>`	`asyncUpdateInternal(ACC valueToStore)`	Update internally stored value.
`OUT`	`get()`
`ACC`	`getInternal()`	Get internally stored value.
`void`	`mergeNamespaces(N target, Collection<N> sources)`	Merges the state of the current key for the given source namespaces into the state of the target namespace.
`void`	`updateInternal(ACC valueToStore)`	Update internally stored value.

Methods inherited from class org.apache.flink.runtime.state.v2.AbstractKeyedState
asyncClear, clear, getStateRequestHandler, getValueSerializer, handleRequest, handleRequestSync, 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.v2.internal.InternalPartitionedState
setCurrentNamespace

Methods inherited from interface org.apache.flink.api.common.state.v2.State
asyncClear, clear

- Field Detail
  - aggregateFunction
```
protected final org.apache.flink.api.common.functions.AggregateFunction<IN,ACC,OUT> aggregateFunction
```
- Constructor Detail
  - AbstractAggregatingState
```
public AbstractAggregatingState(StateRequestHandler stateRequestHandler,
                                org.apache.flink.api.common.functions.AggregateFunction<IN,ACC,OUT> aggregateFunction,
                                org.apache.flink.api.common.typeutils.TypeSerializer<ACC> valueSerializer)
```
    Creates a new AbstractKeyedState with the given asyncExecutionController and stateDescriptor.
    
    Parameters:
    
    stateRequestHandler - The async request handler for handling all requests.
    
    valueSerializer - The type serializer for the values in the state.
- Method Detail
  - asyncGet
```
public org.apache.flink.api.common.state.v2.StateFuture<OUT> asyncGet()
```
    Specified by:
    
    asyncGet in interface org.apache.flink.api.common.state.v2.AppendingState<K,N,IN>
  - asyncAdd
```
public org.apache.flink.api.common.state.v2.StateFuture<Void> asyncAdd(IN value)
```
    Specified by:
    
    asyncAdd in interface org.apache.flink.api.common.state.v2.AppendingState<K,N,IN>
  - asyncGetInternal
```
public org.apache.flink.api.common.state.v2.StateFuture<ACC> asyncGetInternal()
```
    Description copied from interface: InternalStateAccessible
    
    Get internally stored value.
    
    Specified by:
    
    asyncGetInternal in interface InternalStateAccessible<K>
    
    Returns:
    
    internally stored value.
  - asyncUpdateInternal
```
public org.apache.flink.api.common.state.v2.StateFuture<Void> asyncUpdateInternal(ACC valueToStore)
```
    Description copied from interface: InternalStateAccessible
    
    Update internally stored value.
    
    Specified by:
    
    asyncUpdateInternal in interface InternalStateAccessible<K>
    
    Parameters:
    
    valueToStore - new value to store.
  - get
```
public OUT get()
```
    Specified by:
    
    get in interface org.apache.flink.api.common.state.v2.AppendingState<K,N,IN>
  - add
```
public void add(IN value)
```
    Specified by:
    
    add in interface org.apache.flink.api.common.state.v2.AppendingState<K,N,IN>
  - asyncMergeNamespaces
```
public org.apache.flink.api.common.state.v2.StateFuture<Void> asyncMergeNamespaces(N target,
                                                                                   Collection<N> sources)
```
    Description copied from interface: InternalMergingState
    
    Merges the state of the current key for the given source namespaces into the state of the target namespace.
    
    Specified by:
    
    asyncMergeNamespaces in interface InternalMergingState<K,N,IN,ACC,OUT,OUT>
    
    Parameters:
    
    target - The target namespace where the merged state should be stored.
    
    sources - The source namespaces whose state should be merged.
  - mergeNamespaces
```
public void mergeNamespaces(N target,
                            Collection<N> sources)
```
    Description copied from interface: InternalMergingState
    
    Merges the state of the current key for the given source namespaces into the state of the target namespace.
    
    Specified by:
    
    mergeNamespaces in interface InternalMergingState<K,N,IN,ACC,OUT,OUT>
    
    Parameters:
    
    target - The target namespace where the merged state should be stored.
    
    sources - The source namespaces whose state should be merged.
  - getInternal
```
public ACC getInternal()
```
    Description copied from interface: InternalStateAccessible
    
    Get internally stored value.
    
    Specified by:
    
    getInternal in interface InternalStateAccessible<K>
    
    Returns:
    
    internally stored value.
  - updateInternal
```
public void updateInternal(ACC valueToStore)
```
    Description copied from interface: InternalStateAccessible
    
    Update internally stored value.
    
    Specified by:
    
    updateInternal in interface InternalStateAccessible<K>
    
    Parameters:
    
    valueToStore - new value to store.

Class AbstractAggregatingState<K,​N,​IN,​ACC,​OUT>

Field Summary

Fields inherited from class org.apache.flink.runtime.state.v2.AbstractKeyedState

Constructor Summary

Method Summary

Methods inherited from class org.apache.flink.runtime.state.v2.AbstractKeyedState

Methods inherited from class java.lang.Object

Methods inherited from interface org.apache.flink.runtime.state.v2.internal.InternalPartitionedState

Methods inherited from interface org.apache.flink.api.common.state.v2.State

Field Detail

aggregateFunction

Constructor Detail

AbstractAggregatingState

Method Detail

asyncGet

asyncAdd

asyncGetInternal

asyncUpdateInternal

get

add

asyncMergeNamespaces

mergeNamespaces

getInternal

updateInternal

Class AbstractAggregatingState<K,N,IN,ACC,OUT>