org.apache.beam.sdk.coders

Class IterableCoder<T>

java.lang.Object

org.apache.beam.sdk.coders.StandardCoder<IterableT>

org.apache.beam.sdk.coders.IterableLikeCoder<T,Iterable<T>>

org.apache.beam.sdk.coders.IterableCoder<T>

Type Parameters:

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

All Implemented Interfaces:

Serializable, Coder<Iterable<T>>

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 org.apache.beam.sdk.coders.Coder

Coder.Context, Coder.NonDeterministicException

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
org.apache.beam.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 org.apache.beam.sdk.coders.IterableLikeCoder

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

Methods inherited from class org.apache.beam.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 org.apache.beam.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>>