com.google.cloud.dataflow.sdk.util

Class PCollectionViews

java.lang.Object

com.google.cloud.dataflow.sdk.util.PCollectionViews

public class PCollectionViews
extends Object

Implementations of PCollectionView shared across the SDK.

For internal use only, subject to change.

Constructor Summary

Constructors

Constructor and Description
PCollectionViews()

Method Summary

Modifier and Type	Method and Description
static <T,W extends BoundedWindow> PCollectionView<Iterable<T>>	iterableView(Pipeline pipeline, WindowingStrategy<?,W> windowingStrategy, Coder<T> valueCoder) Returns a PCollectionView<Iterable<T>> capable of processing elements encoded using the provided Coder and windowed using the provided WindowingStrategy.
static <K,V,W extends BoundedWindow> PCollectionView<Map<K,V>>	mapView(Pipeline pipeline, WindowingStrategy<?,W> windowingStrategy, Coder<KV<K,V>> valueCoder) Returns a PCollectionView<Map<K, V>> capable of processing elements encoded using the provided Coder and windowed using the provided WindowingStrategy.
static <K,V,W extends BoundedWindow> PCollectionView<Map<K,Iterable<V>>>	multimapView(Pipeline pipeline, WindowingStrategy<?,W> windowingStrategy, Coder<KV<K,V>> valueCoder) Returns a PCollectionView<Map<K, Iterable<V>>> capable of processing elements encoded using the provided Coder and windowed using the provided WindowingStrategy.
static <T,W extends BoundedWindow> PCollectionView<T>	singletonView(Pipeline pipeline, WindowingStrategy<?,W> windowingStrategy, boolean hasDefault, T defaultValue, Coder<T> valueCoder) Returns a PCollectionView<T> capable of processing elements encoded using the provided Coder and windowed using the provided * WindowingStrategy.

Methods inherited from class java.lang.Object

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

Constructor Detail

PCollectionViews

public PCollectionViews()

Method Detail

singletonView

public static <T,W extends BoundedWindow> PCollectionView<T> singletonView(Pipeline pipeline,
                                                                           WindowingStrategy<?,W> windowingStrategy,
                                                                           boolean hasDefault,
                                                                           T defaultValue,
                                                                           Coder<T> valueCoder)

Returns a PCollectionView<T> capable of processing elements encoded using the provided Coder and windowed using the provided * WindowingStrategy.

If hasDefault is true, then the view will take on the value defaultValue for any empty windows.

iterableView

public static <T,W extends BoundedWindow> PCollectionView<Iterable<T>> iterableView(Pipeline pipeline,
                                                                                    WindowingStrategy<?,W> windowingStrategy,
                                                                                    Coder<T> valueCoder)

Returns a PCollectionView<Iterable<T>> capable of processing elements encoded using the provided Coder and windowed using the provided WindowingStrategy.

mapView

public static <K,V,W extends BoundedWindow> PCollectionView<Map<K,V>> mapView(Pipeline pipeline,
                                                                              WindowingStrategy<?,W> windowingStrategy,
                                                                              Coder<KV<K,V>> valueCoder)

Returns a PCollectionView<Map<K, V>> capable of processing elements encoded using the provided Coder and windowed using the provided WindowingStrategy.

multimapView

public static <K,V,W extends BoundedWindow> PCollectionView<Map<K,Iterable<V>>> multimapView(Pipeline pipeline,
                                                                                             WindowingStrategy<?,W> windowingStrategy,
                                                                                             Coder<KV<K,V>> valueCoder)

Returns a PCollectionView<Map<K, Iterable<V>>> capable of processing elements encoded using the provided Coder and windowed using the provided WindowingStrategy.