org.apache.flink.table.runtime.dataview

类 PerWindowStateDataViewStore

java.lang.Object

org.apache.flink.table.runtime.dataview.PerWindowStateDataViewStore

所有已实现的接口:

StateDataViewStore

public class PerWindowStateDataViewStore
extends Object
implements StateDataViewStore

An implementation of StateDataViewStore for window aggregates which forward the state registration to underlying KeyedStateBackend. The created state by this store has the ability to switch window namespace.

构造器概要

构造器

构造器和说明
PerWindowStateDataViewStore(org.apache.flink.runtime.state.KeyedStateBackend<?> keyedStateBackend, org.apache.flink.api.common.typeutils.TypeSerializer<?> windowSerializer, org.apache.flink.api.common.functions.RuntimeContext runtimeContext)

方法概要

限定符和类型	方法和说明
org.apache.flink.api.common.functions.RuntimeContext	getRuntimeContext() Gets the context that contains information about the UDF's runtime, such as the parallelism of the function, the subtask index of the function, or the name of the of the task that executes the function.
<N,V> StateListView<N,V>	getStateListView(String stateName, org.apache.flink.table.dataview.ListViewTypeInfo<V> listViewTypeInfo) Creates a state list view.
<N,UK,UV> StateMapView<N,UK,UV>	getStateMapView(String stateName, org.apache.flink.table.dataview.MapViewTypeInfo<UK,UV> mapViewTypeInfo) Creates a state map view.

从类继承的方法 java.lang.Object

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

构造器详细资料

PerWindowStateDataViewStore

public PerWindowStateDataViewStore(org.apache.flink.runtime.state.KeyedStateBackend<?> keyedStateBackend,
                                   org.apache.flink.api.common.typeutils.TypeSerializer<?> windowSerializer,
                                   org.apache.flink.api.common.functions.RuntimeContext runtimeContext)

方法详细资料

getStateMapView

public <N,UK,UV> StateMapView<N,UK,UV> getStateMapView(String stateName,
                                                       org.apache.flink.table.dataview.MapViewTypeInfo<UK,UV> mapViewTypeInfo)
                                                throws Exception

从接口复制的说明: StateDataViewStore

Creates a state map view.

指定者:

getStateMapView 在接口中 StateDataViewStore

类型参数:

N - Type of the namespace

UK - Type of the keys in the map state

UV - Type of the values in the map state

参数:

stateName - The name of underlying state of the map view

mapViewTypeInfo - The type of the map view

返回:

a keyed map state

抛出:

Exception

getStateListView

public <N,V> StateListView<N,V> getStateListView(String stateName,
                                                 org.apache.flink.table.dataview.ListViewTypeInfo<V> listViewTypeInfo)
                                          throws Exception

从接口复制的说明: StateDataViewStore

Creates a state list view.

指定者:

getStateListView 在接口中 StateDataViewStore

类型参数:

N - Type of the namespace

V - Type of the elements in the list state

参数:

stateName - The name of underlying state of the list view

listViewTypeInfo - The type of the list view

返回:

a keyed list state

抛出:

Exception

getRuntimeContext

public org.apache.flink.api.common.functions.RuntimeContext getRuntimeContext()

从接口复制的说明: StateDataViewStore

Gets the context that contains information about the UDF's runtime, such as the parallelism of the function, the subtask index of the function, or the name of the of the task that executes the function.

指定者:

getRuntimeContext 在接口中 StateDataViewStore