/*
 * 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.flink.stormcompatibility.wordcount;

import org.apache.flink.api.common.functions.MapFunction;
import org.apache.flink.api.java.ExecutionEnvironment;
import org.apache.flink.api.java.operators.DataSource;
import org.apache.flink.api.java.tuple.Tuple0;

public class TestEmptyTupleBatch {

	public static void main(String[] args) throws Exception {
		final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

		DataSource<Tuple0> input = env.fromElements(new Tuple0(), new Tuple0(), new Tuple0(),
				new Tuple0(), new Tuple0(),
				new Tuple0(), new Tuple0(), new Tuple0(), new Tuple0(), new Tuple0(), new Tuple0(),
				new Tuple0(), new Tuple0(), new Tuple0(), new Tuple0(), new Tuple0(), new Tuple0(),
				new Tuple0(), new Tuple0(), new Tuple0());

		input.map(new Counter()).setParallelism(4).print();

	}

	public static class Counter implements MapFunction<Tuple0, Integer> {
		private static final long serialVersionUID = 5518823010274195186L;

		int counter = 0;
		@Override
		public Integer map(Tuple0 value) throws Exception {
			System.out.println("mjsax: " + (++counter) + " " + value.getField(0));
			return new Integer(value.getArity());
		}
	}

}