@Override
public PCollectionView<Iterable<T>> apply(PCollection<T> input) {
return input.apply(
CreatePCollectionView.<T, Iterable<T>>of(
PCollectionViews.iterableView(
input.getPipeline(), input.getWindowingStrategy(), input.getCoder())));
}
@Override
public PDone apply(PCollection<Integer> input) {
// Apply an operation so that this is a composite transform.
input.apply(Count.<Integer>perElement());
return PDone.in(input.getPipeline());
}
@Override
public PDone apply(PCollection<T> input) {
if (topic == null) {
throw new IllegalStateException("need to set the topic of a PubsubIO.Write transform");
}
return PDone.in(input.getPipeline());
}
@Override
public PCollection<Integer> apply(PCollection<Integer> input) {
// Apply an operation so that this is a composite transform.
input.apply(Count.<Integer>perElement());
// Return a value unrelated to the input.
return input.getPipeline().apply(Create.of(1, 2, 3, 4));
}
@Override
public PCollectionView<T> apply(PCollection<T> input) {
return input.apply(
CreatePCollectionView.<T, T>of(
PCollectionViews.singletonView(
input.getPipeline(),
input.getWindowingStrategy(),
hasDefault,
defaultValue,
input.getCoder())));
}
@Override
public PCollectionTuple apply(PCollection<Integer> input) {
PCollection<Integer> sum = input.apply(Sum.integersGlobally());
// Fails here when attempting to construct a tuple with an unbound object.
return PCollectionTuple.of(sumTag, sum)
.and(
doneTag,
PCollection.<Void>createPrimitiveOutputInternal(
input.getPipeline(), WindowingStrategy.globalDefault(), input.isBounded()));
}
@Override
public PCollection<String> apply(PCollection<String> input) {
return PCollection.createPrimitiveOutputInternal(
input.getPipeline(), WindowingStrategy.globalDefault(), input.isBounded());
}