org.apache.flink.streaming.api.windowing.windows

类 TimeWindow

java.lang.Object

org.apache.flink.streaming.api.windowing.windows.Window

org.apache.flink.streaming.api.windowing.windows.TimeWindow

@PublicEvolving
public class TimeWindow
extends Window

A Window that represents a time interval from start (inclusive) to end (exclusive).

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	TimeWindow.Serializer The serializer used to write the TimeWindow type.

构造器概要

构造器

构造器和说明
TimeWindow(long start, long end)

方法概要

限定符和类型	方法和说明
TimeWindow	cover(TimeWindow other) Returns the minimal window covers both this window and the given window.
boolean	equals(Object o)
long	getEnd() Gets the end timestamp of this window.
long	getStart() Gets the starting timestamp of the window.
static long	getWindowStartWithOffset(long timestamp, long offset, long windowSize) Method to get the window start for a timestamp.
int	hashCode()
boolean	intersects(TimeWindow other) Returns true if this window intersects the given window.
long	maxTimestamp() Gets the largest timestamp that still belongs to this window.
static void	mergeWindows(Collection<TimeWindow> windows, MergingWindowAssigner.MergeCallback<TimeWindow> c) Merge overlapping TimeWindows.
String	toString()

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

构造器详细资料

TimeWindow

public TimeWindow(long start,
                  long end)

方法详细资料

getStart

public long getStart()

Gets the starting timestamp of the window. This is the first timestamp that belongs to this window.

返回:

The starting timestamp of this window.

getEnd

public long getEnd()

Gets the end timestamp of this window. The end timestamp is exclusive, meaning it is the first timestamp that does not belong to this window any more.

返回:

The exclusive end timestamp of this window.

maxTimestamp

public long maxTimestamp()

Gets the largest timestamp that still belongs to this window.

This timestamp is identical to getEnd() - 1.

指定者:

maxTimestamp 在类中 Window

返回:

The largest timestamp that still belongs to this window.

另请参阅:

getEnd()

equals

public boolean equals(Object o)

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

toString

public String toString()

覆盖:

toString 在类中 Object

intersects

public boolean intersects(TimeWindow other)

Returns true if this window intersects the given window.

cover

public TimeWindow cover(TimeWindow other)

Returns the minimal window covers both this window and the given window.

mergeWindows

public static void mergeWindows(Collection<TimeWindow> windows,
                                MergingWindowAssigner.MergeCallback<TimeWindow> c)

Merge overlapping TimeWindows. For use by merging WindowAssigners.

getWindowStartWithOffset

public static long getWindowStartWithOffset(long timestamp,
                                            long offset,
                                            long windowSize)

Method to get the window start for a timestamp.

参数:

timestamp - epoch millisecond to get the window start.

offset - The offset which window start would be shifted by.

windowSize - The size of the generated windows.

返回:

window start