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

Class TimestampTransform

  • All Implemented Interfaces:
    java.io.Serializable
    Direct Known Subclasses:
    TimestampTransform.AlignTo, TimestampTransform.Delay
    @Internal
public abstract class TimestampTransform
extends java.lang.Object
implements java.io.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

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static TimestampTransform alignTo​(org.joda.time.Duration period)
      For internal use only; no backwards-compatibility guarantees.
      static TimestampTransform alignTo​(org.joda.time.Duration period, org.joda.time.Instant offset)
      For internal use only; no backwards-compatibility guarantees.
      static TimestampTransform delay​(org.joda.time.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 Detail

      • delay

        @Internal
public static TimestampTransform delay​(org.joda.time.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​(org.joda.time.Duration period,
                                         org.joda.time.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​(org.joda.time.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.