com.google.cloud.dataflow.sdk.coders

Class CustomCoder<T>

java.lang.Object

com.google.cloud.dataflow.sdk.coders.StandardCoder<T>

com.google.cloud.dataflow.sdk.coders.AtomicCoder<T>

com.google.cloud.dataflow.sdk.coders.CustomCoder<T>

Type Parameters:

T - the type of elements handled by this coder

All Implemented Interfaces:

Coder<T>, java.io.Serializable

Direct Known Subclasses:

DelegateCoder, Proto2Coder

public abstract class CustomCoder<T>
extends AtomicCoder<T>
implements java.io.Serializable

An abstract base class for writing Coders that encodes itself via java serialization. Subclasses only need to implement the Coder.encode(T, java.io.OutputStream, com.google.cloud.dataflow.sdk.coders.Coder.Context) and Coder.decode(java.io.InputStream, com.google.cloud.dataflow.sdk.coders.Coder.Context) methods.

Not to be confused with SerializableCoder that encodes serializables.

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

Constructor and Description
CustomCoder()

Method Summary

Methods

Modifier and Type	Method and Description
com.google.cloud.dataflow.sdk.util.CloudObject	asCloudObject() Returns the CloudObject that represents this Coder.
boolean	isDeterministic() Deprecated.
static CustomCoder<?>	of(java.lang.String typeId, java.lang.String type, java.lang.String serializedCoder)

Methods inherited from class com.google.cloud.dataflow.sdk.coders.AtomicCoder

getCoderArguments, getInstanceComponents

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

equals, getComponents, getEncodedElementByteSize, hashCode, isRegisterByteSizeObserverCheap, registerByteSizeObserver, toString, verifyDeterministic, verifyDeterministic, verifyDeterministic

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.cloud.dataflow.sdk.coders.Coder

decode, encode

Constructor Detail

CustomCoder

public CustomCoder()

Method Detail

of

public static CustomCoder<?> of(java.lang.String typeId,
                java.lang.String type,
                java.lang.String serializedCoder)

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<T>

Overrides:

asCloudObject in class StandardCoder<T>

isDeterministic

@Deprecated
public boolean isDeterministic()

Deprecated.

Description copied from interface: Coder

Returns true if the coding is deterministic.

In order for a Coder to be considered deterministic, the following must be true:

• two values which compare as equal (via Object.equals() or Comparable.compareTo(), if supported), have the same encoding.
• the Coder always produces a canonical encoding, which is the same for an instance of an object even if produced on different computers at different times.

Specified by:

isDeterministic in interface Coder<T>