/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.beam.runners.spark.io;
import org.apache.beam.sdk.transforms.PTransform;
import org.apache.beam.sdk.values.PCollection;
import org.apache.beam.sdk.values.PDone;
/**
* Print to console.
*/
public final class ConsoleIO {
private ConsoleIO() {
}
/**
* Write on the console.
*/
public static final class Write {
private Write() {
}
public static <T> Unbound<T> out() {
return new Unbound<>(10);
}
public static <T> Unbound<T> out(int num) {
return new Unbound<>(num);
}
/**
* {@link PTransform} writing {@link PCollection} on the console.
* @param <T> the type of the elements in the {@link PCollection}
*/
public static class Unbound<T> extends PTransform<PCollection<T>, PDone> {
private final int num;
Unbound(int num) {
this.num = num;
}
public int getNum() {
return num;
}
@Override
public PDone expand(PCollection<T> input) {
return PDone.in(input.getPipeline());
}
}
}
}