KV (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.values

Class KV<K,V>

• java.lang.Object
• • com.google.cloud.dataflow.sdk.values.KV<K,V>

• Type Parameters:

  K - the type of the key

  V - the type of the value

  All Implemented Interfaces:

  Serializable

  ---

  
  

  public class KV<K,V>
  extends Object
  implements Serializable

  An immutable key/value pair.

  Various PTransforms like GroupByKey and Combine.perKey(com.google.cloud.dataflow.sdk.transforms.SerializableFunction<java.lang.Iterable<V>, V>) operate on PCollections of KVs.

  See Also:

  Serialized Form

• • Nested Class Summary

    Nested Classes 

    Modifier and Type	Class and Description
    static class	KV.OrderByKey<K extends Comparable<? super K>,V> A Comparator that orders KVs by the natural ordering of their keys.
    static class	KV.OrderByValue<K,V extends Comparable<? super V>> A Comparator that orders KVs by the natural ordering of their values.

  • Method Summary

    All Methods Static Methods Instance Methods Concrete Methods 

    Modifier and Type	Method and Description
    boolean	equals(Object other)
    K	getKey() Returns the key of this KV.
    V	getValue() Returns the value of this KV.
    int	hashCode()
    static <K,V> KV<K,V>	of(K key, V value) Returns a KV with the given key and value.
    String	toString()

    • Methods inherited from class java.lang.Object

      clone, finalize, getClass, notify, notifyAll, wait, wait, wait

• • Method Detail

    • of

      public static <K,V> KV<K,V> of(K key,
                                     V value)

      Returns a KV with the given key and value.

    • getKey

      public K getKey()

      Returns the key of this KV.

    • getValue

      public V getValue()

      Returns the value of this KV.

    • equals

      public boolean equals(Object other)

      Overrides:

      equals in class Object

    • hashCode

      public int hashCode()

      Overrides:

      hashCode in class Object

    • toString

      public String toString()

      Overrides:

      toString in class Object