InfiniteInputIterator.java

/*
 * 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.runtime.operators.testutils;

import org.apache.flink.types.IntValue;
import org.apache.flink.types.Record;
import org.apache.flink.util.MutableObjectIterator;

/**
 * A simple iterator that returns an infinite amount of records resembling (0, 0) pairs.
 */
public class InfiniteInputIterator implements MutableObjectIterator<Record>
{
	private final IntValue val1 = new IntValue(0);
	private final IntValue val2 = new IntValue(0);
	
	@Override
	public Record next(Record reuse) {
		reuse.setField(0, val1);
		reuse.setField(1, val2);
		return reuse;
	}

	@Override
	public Record next() {
		Record result = new Record(2);
		result.setField(0, val1);
		result.setField(1, val2);
		return result;
	}

}