org.apache.flink.streaming.api.windowing.assigners

类 GlobalWindows

java.lang.Object

org.apache.flink.streaming.api.windowing.assigners.WindowAssigner<Object,GlobalWindow>

org.apache.flink.streaming.api.windowing.assigners.GlobalWindows

所有已实现的接口:

Serializable

@PublicEvolving
public class GlobalWindows
extends WindowAssigner<Object,GlobalWindow>

A WindowAssigner that assigns all elements to the same GlobalWindow.

Use this if you want to use a Trigger and Evictor to do flexible, policy based windows.

另请参阅:

序列化表格

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	GlobalWindows.NeverTrigger A trigger that never fires, as default Trigger for GlobalWindows.

从类继承的嵌套类/接口 org.apache.flink.streaming.api.windowing.assigners.WindowAssigner

WindowAssigner.WindowAssignerContext

方法概要

限定符和类型	方法和说明
Collection<GlobalWindow>	assignWindows(Object element, long timestamp, WindowAssigner.WindowAssignerContext context) Returns a Collection of windows that should be assigned to the element.
static GlobalWindows	create() Creates a new GlobalWindows WindowAssigner that assigns all elements to the same GlobalWindow.
Trigger<Object,GlobalWindow>	getDefaultTrigger(StreamExecutionEnvironment env) Returns the default trigger associated with this WindowAssigner.
org.apache.flink.api.common.typeutils.TypeSerializer<GlobalWindow>	getWindowSerializer(org.apache.flink.api.common.ExecutionConfig executionConfig) Returns a TypeSerializer for serializing windows that are assigned by this WindowAssigner.
boolean	isEventTime() Returns true if elements are assigned to windows based on event time, false otherwise.
String	toString()

从类继承的方法 java.lang.Object

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

方法详细资料

assignWindows

public Collection<GlobalWindow> assignWindows(Object element,
                                              long timestamp,
                                              WindowAssigner.WindowAssignerContext context)

从类复制的说明: WindowAssigner

Returns a Collection of windows that should be assigned to the element.

指定者:

assignWindows 在类中 WindowAssigner<Object,GlobalWindow>

参数:

element - The element to which windows should be assigned.

timestamp - The timestamp of the element.

context - The WindowAssigner.WindowAssignerContext in which the assigner operates.

getDefaultTrigger

public Trigger<Object,GlobalWindow> getDefaultTrigger(StreamExecutionEnvironment env)

从类复制的说明: WindowAssigner

Returns the default trigger associated with this WindowAssigner.

指定者:

getDefaultTrigger 在类中 WindowAssigner<Object,GlobalWindow>

toString

public String toString()

覆盖:

toString 在类中 Object

create

public static GlobalWindows create()

Creates a new GlobalWindows WindowAssigner that assigns all elements to the same GlobalWindow.

返回:

The global window policy.

getWindowSerializer

public org.apache.flink.api.common.typeutils.TypeSerializer<GlobalWindow> getWindowSerializer(org.apache.flink.api.common.ExecutionConfig executionConfig)

从类复制的说明: WindowAssigner

Returns a TypeSerializer for serializing windows that are assigned by this WindowAssigner.

指定者:

getWindowSerializer 在类中 WindowAssigner<Object,GlobalWindow>

isEventTime

public boolean isEventTime()

从类复制的说明: WindowAssigner

Returns true if elements are assigned to windows based on event time, false otherwise.

指定者:

isEventTime 在类中 WindowAssigner<Object,GlobalWindow>