com.google.cloud.dataflow.sdk.transforms.windowing

Class CalendarWindows.MonthsWindows

java.lang.Object

com.google.cloud.dataflow.sdk.transforms.windowing.WindowFn<T,W>

com.google.cloud.dataflow.sdk.transforms.windowing.NonMergingWindowFn<T,W>

com.google.cloud.dataflow.sdk.transforms.windowing.PartitioningWindowFn<java.lang.Object,IntervalWindow>

com.google.cloud.dataflow.sdk.transforms.windowing.CalendarWindows.MonthsWindows

All Implemented Interfaces:

java.io.Serializable

Enclosing class:

CalendarWindows

public static class CalendarWindows.MonthsWindows
extends PartitioningWindowFn<java.lang.Object,IntervalWindow>

A WindowFn that windows elements into periods measured by months.

By default, periods of multiple months are measured starting at the epoch. This can be overridden with withStartingMonth(int, int).

Months start on the first day of each calendar month, unless overridden by beginningOnDay(int).

The time zone used to determine calendar boundaries is UTC, unless this is overridden with the withTimeZone(org.joda.time.DateTimeZone) method.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.google.cloud.dataflow.sdk.transforms.windowing.WindowFn

WindowFn.AssignContext, WindowFn.MergeContext

Method Summary

Methods

Modifier and Type	Method and Description
IntervalWindow	assignWindow(Instant timestamp) Returns the single window to which elements with this timestamp belong.
CalendarWindows.MonthsWindows	beginningOnDay(int dayOfMonth)
boolean	isCompatible(WindowFn other) Returns whether this performs the same merging as the given WindowFn.
Coder<IntervalWindow>	windowCoder() Returns the Coder used for serializing the windows used by this windowFn.
CalendarWindows.MonthsWindows	withStartingMonth(int year, int month)
CalendarWindows.MonthsWindows	withTimeZone(DateTimeZone timeZone)

Methods inherited from class com.google.cloud.dataflow.sdk.transforms.windowing.PartitioningWindowFn

assignWindows

Methods inherited from class com.google.cloud.dataflow.sdk.transforms.windowing.NonMergingWindowFn

mergeWindows

Methods inherited from class com.google.cloud.dataflow.sdk.transforms.windowing.WindowFn

getSideInputWindow

Methods inherited from class java.lang.Object

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

Method Detail

beginningOnDay

public CalendarWindows.MonthsWindows beginningOnDay(int dayOfMonth)

withStartingMonth

public CalendarWindows.MonthsWindows withStartingMonth(int year,
                                              int month)

withTimeZone

public CalendarWindows.MonthsWindows withTimeZone(DateTimeZone timeZone)

assignWindow

public IntervalWindow assignWindow(Instant timestamp)

Description copied from class: PartitioningWindowFn

Returns the single window to which elements with this timestamp belong.

Specified by:

assignWindow in class PartitioningWindowFn<java.lang.Object,IntervalWindow>

windowCoder

public Coder<IntervalWindow> windowCoder()

Description copied from class: WindowFn

Returns the Coder used for serializing the windows used by this windowFn.

Specified by:

windowCoder in class WindowFn<java.lang.Object,IntervalWindow>

isCompatible

public boolean isCompatible(WindowFn other)

Description copied from class: WindowFn

Returns whether this performs the same merging as the given WindowFn.

Specified by:

isCompatible in class WindowFn<java.lang.Object,IntervalWindow>