package org.infinispan.stream.impl.intops.object;
import java.util.function.Function;
import java.util.stream.Stream;
import org.infinispan.stream.impl.intops.IntermediateOperation;
/**
* Performs flat map operation on a regular {@link Stream}
* @param <I> the type of the input stream
* @param <O> the type of the output stream
*/
public class FlatMapOperation<I, O> implements IntermediateOperation<I, Stream<I>, O, Stream<O>> {
private final Function<? super I, ? extends Stream<? extends O>> function;
public FlatMapOperation(Function<? super I, ? extends Stream<? extends O>> function) {
this.function = function;
}
@Override
public Stream<O> perform(Stream<I> stream) {
return stream.flatMap(function);
}
public Function<? super I, ? extends Stream<? extends O>> getFunction() {
return function;
}
}