org.apache.beam.fn.harness.state

Class StateBackedIterable.Coder<T>

java.lang.Object

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

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

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

org.apache.beam.fn.harness.state.StateBackedIterable.Coder<T>

All Implemented Interfaces:

java.io.Serializable

Enclosing class:

StateBackedIterable<T>

public static class StateBackedIterable.Coder<T>
extends org.apache.beam.sdk.coders.IterableLikeCoder<T,java.lang.Iterable<T>>

Decodes an Iterable that might be backed by state. If the terminator at the end of the value stream is -1 then we return a StateBackedIterable otherwise we return an Iterable.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.beam.sdk.coders.Coder

org.apache.beam.sdk.coders.Coder.Context, org.apache.beam.sdk.coders.Coder.NonDeterministicException

Constructor Summary

Constructors

Constructor and Description
Coder(java.util.function.Supplier<Cache<?,?>> cache, BeamFnStateClient beamFnStateClient, java.util.function.Supplier<java.lang.String> instructionId, org.apache.beam.sdk.coders.Coder<T> elemCoder)

Method Summary

Modifier and Type	Method and Description
protected java.lang.Iterable<T>	decodeToIterable(java.util.List<T> decodedElements)
protected java.lang.Iterable<T>	decodeToIterable(java.util.List<T> decodedElements, long terminatorValue, java.io.InputStream in)
void	encode(java.lang.Iterable<T> iterable, java.io.OutputStream outStream)

Methods inherited from class org.apache.beam.sdk.coders.IterableLikeCoder

decode, getCoderArguments, getElemCoder, isRegisterByteSizeObserverCheap, registerByteSizeObserver, verifyDeterministic

Methods inherited from class org.apache.beam.sdk.coders.StructuredCoder

equals, getComponents, hashCode, toString

Methods inherited from class org.apache.beam.sdk.coders.Coder

consistentWithEquals, decode, encode, getEncodedElementByteSize, getEncodedTypeDescriptor, structuralValue, verifyDeterministic, verifyDeterministic

Methods inherited from class java.lang.Object

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

Constructor Detail

Coder

public Coder(java.util.function.Supplier<Cache<?,?>> cache,
             BeamFnStateClient beamFnStateClient,
             java.util.function.Supplier<java.lang.String> instructionId,
             org.apache.beam.sdk.coders.Coder<T> elemCoder)

Method Detail

decodeToIterable

protected java.lang.Iterable<T> decodeToIterable(java.util.List<T> decodedElements)

Specified by:

decodeToIterable in class org.apache.beam.sdk.coders.IterableLikeCoder<T,java.lang.Iterable<T>>

decodeToIterable

protected java.lang.Iterable<T> decodeToIterable(java.util.List<T> decodedElements,
                                                 long terminatorValue,
                                                 java.io.InputStream in)
                                          throws java.io.IOException

Overrides:

decodeToIterable in class org.apache.beam.sdk.coders.IterableLikeCoder<T,java.lang.Iterable<T>>

Throws:

java.io.IOException

encode

public void encode(java.lang.Iterable<T> iterable,
                   java.io.OutputStream outStream)
            throws java.io.IOException

Overrides:

encode in class org.apache.beam.sdk.coders.IterableLikeCoder<T,java.lang.Iterable<T>>

Throws:

java.io.IOException