com.google.cloud.dataflow.sdk.runners.worker

Class InMemoryReader<T>

java.lang.Object

java.util.Observable

com.google.cloud.dataflow.sdk.util.common.worker.Reader<T>

com.google.cloud.dataflow.sdk.runners.worker.InMemoryReader<T>

Type Parameters:

T - the type of the elements read from the source

public class InMemoryReader<T>
extends Reader<T>

A source that yields a set of precomputed elements.

Nested Class Summary

Nested classes/interfaces inherited from class com.google.cloud.dataflow.sdk.util.common.worker.Reader

Reader.AbstractReaderIterator<T>, Reader.DynamicSplitRequest, Reader.DynamicSplitResult, Reader.DynamicSplitResultWithPosition, Reader.Position, Reader.Progress, Reader.ReaderIterator<T>

Field Summary

Fields inherited from class com.google.cloud.dataflow.sdk.util.common.worker.Reader

stateSampler, stateSamplerOperationName

Constructor Summary

Constructors

Constructor and Description
InMemoryReader(List<String> encodedElements, Long startIndex, Long endIndex, Coder<T> coder)

Method Summary

Modifier and Type	Method and Description
Reader.ReaderIterator<T>	iterator() Returns a ReaderIterator that allows reading from this source.

Methods inherited from class com.google.cloud.dataflow.sdk.util.common.worker.Reader

notifyElementRead, setStateSamplerAndOperationName, supportsRestart

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

InMemoryReader

public InMemoryReader(List<String> encodedElements,
                      @Nullable
                      Long startIndex,
                      @Nullable
                      Long endIndex,
                      Coder<T> coder)

Method Detail

iterator

public Reader.ReaderIterator<T> iterator()
                                  throws IOException

Description copied from class: Reader

Returns a ReaderIterator that allows reading from this source.

Specified by:

iterator in class Reader<T>

Throws:

IOException