streams/src/main/java/org/gcube/data/streams/dsl/pipe/PipeThroughClause.java

37 lines
1019 B
Java

package org.gcube.data.streams.dsl.pipe;
import org.gcube.data.streams.Stream;
import org.gcube.data.streams.delegates.PipedStream;
import org.gcube.data.streams.dsl.StreamClause;
import org.gcube.data.streams.dsl.StreamClauseEnv;
import org.gcube.data.streams.generators.Generator;
/**
* The clause of {@code pipe} sentences in which a {@link Generator} is configured on the output stream.
*
* @author Fabio Simeoni
*
* @param <E> the type of stream elements
*/
public class PipeThroughClause<E> extends StreamClause<E, StreamClauseEnv<E>> {
/**
* Creates an instance from an input {@link Stream}
*
* @param stream the stream
*/
public PipeThroughClause(Stream<E> stream) {
super(new StreamClauseEnv<E>(stream));
}
/**
* Return a {@link Stream} configured with a given {@link Generator}.
*
* @param generator the generator
* @return the stream
*/
public <E2> PipedStream<E, E2> through(Generator<E, E2> generator) {
return new PipedStream<E, E2>(env.stream(), generator);
}
}