Package org.apache.beam.sdk.transforms.windowing

Class TimestampTransform

java.lang.Object

org.apache.beam.sdk.transforms.windowing.TimestampTransform

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

TimestampTransform.AlignTo, TimestampTransform.Delay

@Internal
public abstract class TimestampTransform
extends Object
implements Serializable

For internal use only; no backwards-compatibility guarantees.

An abstract description of a standardized transformation on timestamps.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	TimestampTransform.AlignTo	For internal use only; no backwards-compatibility guarantees.
static class	TimestampTransform.Delay	For internal use only; no backwards-compatibility guarantees.

Method Summary

Modifier and Type	Method	Description
static TimestampTransform	alignTo(Duration period)	For internal use only; no backwards-compatibility guarantees.
static TimestampTransform	alignTo(Duration period, Instant offset)	For internal use only; no backwards-compatibility guarantees.
static TimestampTransform	delay(Duration delay)	For internal use only; no backwards-compatibility guarantees.

Methods inherited from class java.lang.Object

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

Method Details

delay

@Internal
public static TimestampTransform delay(Duration delay)

For internal use only; no backwards-compatibility guarantees.

Returns a transform that shifts a timestamp later by delay.

alignTo

@Internal
public static TimestampTransform alignTo(Duration period,
 Instant offset)

For internal use only; no backwards-compatibility guarantees.

Returns a transform that aligns a timestamp to the next boundary of period, starting from offset.

alignTo

@Internal
public static TimestampTransform alignTo(Duration period)

For internal use only; no backwards-compatibility guarantees.

Returns a transform that aligns a timestamp to the next boundary of period, starting from the start of the epoch.