org.apache.beam.sdk.extensions.sql.impl

Class TVFSlidingWindowFn

java.lang.Object

org.apache.beam.sdk.transforms.windowing.WindowFn<T,W>

org.apache.beam.sdk.transforms.windowing.NonMergingWindowFn<java.lang.Object,org.apache.beam.sdk.transforms.windowing.IntervalWindow>

org.apache.beam.sdk.extensions.sql.impl.TVFSlidingWindowFn

All Implemented Interfaces:

java.io.Serializable, org.apache.beam.sdk.transforms.display.HasDisplayData

public abstract class TVFSlidingWindowFn
extends org.apache.beam.sdk.transforms.windowing.NonMergingWindowFn<java.lang.Object,org.apache.beam.sdk.transforms.windowing.IntervalWindow>

TVFSlidingWindowFn assigns window based on input row's "window_start" and "window_end" timestamps.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.beam.sdk.transforms.windowing.WindowFn

org.apache.beam.sdk.transforms.windowing.WindowFn.AssignContext, org.apache.beam.sdk.transforms.windowing.WindowFn.MergeContext

Constructor Summary

Constructors

Constructor and Description
TVFSlidingWindowFn()

Method Summary

Modifier and Type	Method and Description
java.util.Collection<org.apache.beam.sdk.transforms.windowing.IntervalWindow>	assignWindows(org.apache.beam.sdk.transforms.windowing.WindowFn.AssignContext c)
org.apache.beam.sdk.transforms.windowing.WindowMappingFn<org.apache.beam.sdk.transforms.windowing.IntervalWindow>	getDefaultWindowMappingFn()
abstract org.joda.time.Duration	getPeriod() Amount of time between generated windows.
abstract org.joda.time.Duration	getSize() Size of the generated windows.
boolean	isCompatible(org.apache.beam.sdk.transforms.windowing.WindowFn<?,?> other)
static TVFSlidingWindowFn	of(org.joda.time.Duration size, org.joda.time.Duration period)
org.apache.beam.sdk.coders.Coder<org.apache.beam.sdk.transforms.windowing.IntervalWindow>	windowCoder()

Methods inherited from class org.apache.beam.sdk.transforms.windowing.NonMergingWindowFn

isNonMerging, mergeWindows

Methods inherited from class org.apache.beam.sdk.transforms.windowing.WindowFn

assignsToOneWindow, getWindowTypeDescriptor, populateDisplayData, verifyCompatibility

Methods inherited from class java.lang.Object

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

Constructor Detail

TVFSlidingWindowFn

public TVFSlidingWindowFn()

Method Detail

getSize

public abstract org.joda.time.Duration getSize()

Size of the generated windows.

getPeriod

public abstract org.joda.time.Duration getPeriod()

Amount of time between generated windows.

of

public static TVFSlidingWindowFn of(org.joda.time.Duration size,
                                    org.joda.time.Duration period)

assignWindows

public java.util.Collection<org.apache.beam.sdk.transforms.windowing.IntervalWindow> assignWindows(org.apache.beam.sdk.transforms.windowing.WindowFn.AssignContext c)
                                                                                            throws java.lang.Exception

Specified by:

assignWindows in class org.apache.beam.sdk.transforms.windowing.WindowFn<java.lang.Object,org.apache.beam.sdk.transforms.windowing.IntervalWindow>

Throws:

java.lang.Exception

isCompatible

public boolean isCompatible(org.apache.beam.sdk.transforms.windowing.WindowFn<?,?> other)

Specified by:

isCompatible in class org.apache.beam.sdk.transforms.windowing.WindowFn<java.lang.Object,org.apache.beam.sdk.transforms.windowing.IntervalWindow>

windowCoder

public org.apache.beam.sdk.coders.Coder<org.apache.beam.sdk.transforms.windowing.IntervalWindow> windowCoder()

Specified by:

windowCoder in class org.apache.beam.sdk.transforms.windowing.WindowFn<java.lang.Object,org.apache.beam.sdk.transforms.windowing.IntervalWindow>

getDefaultWindowMappingFn

public org.apache.beam.sdk.transforms.windowing.WindowMappingFn<org.apache.beam.sdk.transforms.windowing.IntervalWindow> getDefaultWindowMappingFn()

Specified by:

getDefaultWindowMappingFn in class org.apache.beam.sdk.transforms.windowing.WindowFn<java.lang.Object,org.apache.beam.sdk.transforms.windowing.IntervalWindow>