BoundedWindow (Google Cloud Dataflow SDK 1.9.1 API)

Google Cloud Dataflow SDK for Java, version 1.9.1

Warning: Dataflow SDK 1.x for Java is unsupported as of October 16, 2018. After August 12, 2020, you can use unsupported SDKs temporarily while you upgrade your pipelines. For more information, see Using an unsupported SDK.

For information on migrating from the 1.x SDK, see Migrating from Dataflow SDK 1.x for Java.

Note: If you are using Cloud Dataflow SDK version 2.x, see the Apache Beam API reference documentation.

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

Class BoundedWindow

• java.lang.Object
• • com.google.cloud.dataflow.sdk.transforms.windowing.BoundedWindow

• Direct Known Subclasses:

  GlobalWindow, IntervalWindow

  ---

  
  

  public abstract class BoundedWindow
  extends Object

  A BoundedWindow represents a finite grouping of elements, with an upper bound (larger timestamps represent more recent data) on the timestamps of elements that can be placed in the window. This finiteness means that for every window, at some point in time, all data for that window will have arrived and can be processed together.

  Windows must also implement Object.equals(java.lang.Object) and Object.hashCode() such that windows that are logically equal will be treated as equal by equals() and hashCode().

• • Field Summary

    Fields 

    Modifier and Type	Field and Description
    static Instant	TIMESTAMP_MAX_VALUE
    static Instant	TIMESTAMP_MIN_VALUE

  • Constructor Summary

    Constructors 

    Constructor and Description
    BoundedWindow()

  • Method Summary

    All Methods Instance Methods Abstract Methods 

    Modifier and Type	Method and Description
    abstract Instant	maxTimestamp() Returns the inclusive upper bound of timestamps for values in this window.

    • Methods inherited from class java.lang.Object

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

• • Field Detail

    • TIMESTAMP_MIN_VALUE

      public static final Instant TIMESTAMP_MIN_VALUE

    • TIMESTAMP_MAX_VALUE

      public static final Instant TIMESTAMP_MAX_VALUE

  • Constructor Detail

    • BoundedWindow

      public BoundedWindow()

  • Method Detail

    • maxTimestamp

      public abstract Instant maxTimestamp()

      Returns the inclusive upper bound of timestamps for values in this window.