How to use

PCollectionViews

in

org.apache.beam.sdk.values

/**
 * Returns the side inputs of this {@link Combine}, tagged with the tag of the {@link
 * PCollectionView}. The values of the returned map will be equal to the result of {@link
 * #getSideInputs()}.
 */
@Override
public Map<TupleTag<?>, PValue> getAdditionalInputs() {
 return PCollectionViews.toAdditionalInputs(sideInputs);
}

@Parameters(name = "{index}: {0}")
public static Iterable<CreatePCollectionView<?, ?>> data() {
 return ImmutableList.of(
   CreatePCollectionView.of(
     PCollectionViews.singletonView(
       testPCollection,
       testPCollection.getWindowingStrategy(),
       false,
       null,
       StringUtf8Coder.of())),
   CreatePCollectionView.of(
     PCollectionViews.listView(testPCollection, testPCollection.getWindowingStrategy())));
}

 @Override
 public PCollectionView<List<T>> expand(PCollection<T> input) {
  try {
   GroupByKey.applicableTo(input);
  } catch (IllegalStateException e) {
   throw new IllegalStateException("Unable to create a side-input view from input", e);
  }
  PCollection<KV<Void, T>> materializationInput =
    input.apply(new VoidKeyToMultimapMaterialization<>());
  PCollectionView<List<T>> view =
    PCollectionViews.listView(
      materializationInput, materializationInput.getWindowingStrategy());
  materializationInput.apply(CreatePCollectionView.of(view));
  return view;
 }
}

@Override
public PCollectionView<OutputT> expand(PCollection<InputT> input) {
 PCollection<OutputT> combined =
   input.apply(Combine.<InputT, OutputT>globally(fn).withoutDefaults().withFanout(fanout));
 PCollection<KV<Void, OutputT>> materializationInput =
   combined.apply(new VoidKeyToMultimapMaterialization<>());
 PCollectionView<OutputT> view =
   PCollectionViews.singletonView(
     materializationInput,
     input.getWindowingStrategy(),
     insertDefault,
     insertDefault ? fn.defaultValue() : null,
     combined.getCoder());
 materializationInput.apply(CreatePCollectionView.of(view));
 return view;
}

 @Override
 public PCollectionView<Iterable<T>> expand(PCollection<T> input) {
  try {
   GroupByKey.applicableTo(input);
  } catch (IllegalStateException e) {
   throw new IllegalStateException("Unable to create a side-input view from input", e);
  }
  PCollection<KV<Void, T>> materializationInput =
    input.apply(new VoidKeyToMultimapMaterialization<>());
  PCollectionView<Iterable<T>> view =
    PCollectionViews.iterableView(
      materializationInput, materializationInput.getWindowingStrategy());
  materializationInput.apply(CreatePCollectionView.of(view));
  return view;
 }
}

 @Override
 public PCollectionView<Map<K, Iterable<V>>> expand(PCollection<KV<K, V>> input) {
  try {
   GroupByKey.applicableTo(input);
  } catch (IllegalStateException e) {
   throw new IllegalStateException("Unable to create a side-input view from input", e);
  }
  PCollection<KV<Void, KV<K, V>>> materializationInput =
    input.apply(new VoidKeyToMultimapMaterialization<>());
  PCollectionView<Map<K, Iterable<V>>> view =
    PCollectionViews.multimapView(
      materializationInput, materializationInput.getWindowingStrategy());
  materializationInput.apply(CreatePCollectionView.of(view));
  return view;
 }
}

 @Override
 public PCollectionView<Map<K, V>> expand(PCollection<KV<K, V>> input) {
  try {
   GroupByKey.applicableTo(input);
  } catch (IllegalStateException e) {
   throw new IllegalStateException("Unable to create a side-input view from input", e);
  }
  PCollection<KV<Void, KV<K, V>>> materializationInput =
    input.apply(new VoidKeyToMultimapMaterialization<>());
  PCollectionView<Map<K, V>> view =
    PCollectionViews.mapView(
      materializationInput, materializationInput.getWindowingStrategy());
  materializationInput.apply(CreatePCollectionView.of(view));
  return view;
 }
}

/**
 * Returns the side inputs of this {@link Combine}, tagged with the tag of the {@link
 * PCollectionView}. The values of the returned map will be equal to the result of {@link
 * #getSideInputs()}.
 */
@Override
public Map<TupleTag<?>, PValue> getAdditionalInputs() {
 return PCollectionViews.toAdditionalInputs(sideInputs);
}

/**
 * Returns the side inputs of this {@link ParDo}, tagged with the tag of the {@link
 * PCollectionView}. The values of the returned map will be equal to the result of {@link
 * #getSideInputs()}.
 */
@Override
public Map<TupleTag<?>, PValue> getAdditionalInputs() {
 return PCollectionViews.toAdditionalInputs(sideInputs);
}

/**
 * Returns the side inputs of this {@link ParDo}, tagged with the tag of the {@link
 * PCollectionView}. The values of the returned map will be equal to the result of {@link
 * #getSideInputs()}.
 */
@Override
public Map<TupleTag<?>, PValue> getAdditionalInputs() {
 return PCollectionViews.toAdditionalInputs(sideInputs);
}

 @Override
 public Map<TupleTag<?>, PValue> getAdditionalInputs() {
  return PCollectionViews.toAdditionalInputs(sideInputs);
 }
}

@Override
public Map<TupleTag<?>, PValue> getAdditionalInputs() {
 return PCollectionViews.toAdditionalInputs(sideInputs);
}

@Override
public Map<TupleTag<?>, PValue> getAdditionalInputs() {
 return PCollectionViews.toAdditionalInputs(sideInputs);
}

@Override
public Map<TupleTag<?>, PValue> getAdditionalInputs() {
 return PCollectionViews.toAdditionalInputs(sideInputs);
}

@Override
public Map<TupleTag<?>, PValue> getAdditionalInputs() {
 return PCollectionViews.toAdditionalInputs(getSideInputs());
}

@Override
public Map<TupleTag<?>, PValue> getAdditionalInputs() {
 return PCollectionViews.toAdditionalInputs(getSideInputs());
}