IterableCoder (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, Dataflow will not run jobs using Dataflow 1.x and below. See Migrating from Dataflow SDK 1.x for Java for migration guidance.

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

com.google.cloud.dataflow.sdk.coders

Class IterableCoder<T>

• java.lang.Object
• • com.google.cloud.dataflow.sdk.coders.StandardCoder<IterableT>
  • • com.google.cloud.dataflow.sdk.coders.IterableLikeCoder<T,Iterable<T>>
    • • com.google.cloud.dataflow.sdk.coders.IterableCoder<T>

• Type Parameters:

  T - the type of the elements of the iterables being transcoded

  All Implemented Interfaces:

  Coder<Iterable<T>>, Serializable

  ---

  
  

  public class IterableCoder<T>
  extends IterableLikeCoder<T,Iterable<T>>

  An IterableCoder encodes any Iterable in the format of IterableLikeCoder.

  See Also:

  Serialized Form

• • Nested Class Summary

    • Nested classes/interfaces inherited from interface com.google.cloud.dataflow.sdk.coders.Coder

      Coder.Context, Coder.NonDeterministicException

  • Constructor Summary

    Constructors 

    Modifier	Constructor and Description
    protected	IterableCoder(Coder<T> elemCoder)

  • Method Summary

    All Methods Static Methods Instance Methods Concrete Methods 

    Modifier and Type	Method and Description
    com.google.cloud.dataflow.sdk.util.CloudObject	asCloudObject() Returns the CloudObject that represents this Coder.
    protected Iterable<T>	decodeToIterable(List<T> decodedElements) Builds an instance of IterableT, this coder's associated Iterable-like subtype, from a list of decoded elements.
    static <T> List<Object>	getInstanceComponents(Iterable<T> exampleValue) Returns the first element in this iterable if it is non-empty, otherwise returns null.
    static <T> IterableCoder<T>	of(Coder<T> elemCoder)
    static IterableCoder<?>	of(List<Coder<?>> components)

    • Methods inherited from class com.google.cloud.dataflow.sdk.coders.IterableLikeCoder

      decode, encode, getCoderArguments, getElemCoder, getInstanceComponentsHelper, isRegisterByteSizeObserverCheap, registerByteSizeObserver, verifyDeterministic

    • Methods inherited from class com.google.cloud.dataflow.sdk.coders.StandardCoder

      consistentWithEquals, equals, getAllowedEncodings, getComponents, getEncodedElementByteSize, getEncodingId, hashCode, structuralValue, toString, verifyDeterministic, verifyDeterministic

    • Methods inherited from class java.lang.Object

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

• • Constructor Detail

    • IterableCoder

      protected IterableCoder(Coder<T> elemCoder)

  • Method Detail

    • of

      public static <T> IterableCoder<T> of(Coder<T> elemCoder)

    • decodeToIterable

      protected final Iterable<T> decodeToIterable(List<T> decodedElements)

      Description copied from class: IterableLikeCoder
      Builds an instance of IterableT, this coder's associated Iterable-like subtype, from a list of decoded elements.

      Specified by:

      decodeToIterable in class IterableLikeCoder<T,Iterable<T>>

    • of

      public static IterableCoder<?> of(List<Coder<?>> components)

    • getInstanceComponents

      public static <T> List<Object> getInstanceComponents(Iterable<T> exampleValue)

      Returns the first element in this iterable if it is non-empty, otherwise returns null.

    • asCloudObject

      public com.google.cloud.dataflow.sdk.util.CloudObject asCloudObject()

      Description copied from interface: Coder
      Returns the CloudObject that represents this Coder.

      Specified by:

      asCloudObject in interface Coder<Iterable<T>>

      Overrides:

      asCloudObject in class StandardCoder<Iterable<T>>