ListDataRowReader.java

/**
 * Copyright (C) 2001-2017 by RapidMiner and the contributors
 * 
 * Complete list of developers available at our web site:
 * 
 * http://rapidminer.com
 * 
 * This program is free software: you can redistribute it and/or modify it under the terms of the
 * GNU Affero General Public License as published by the Free Software Foundation, either version 3
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License along with this program.
 * If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.example.table;

import java.util.Iterator;


/**
 * Iterates over a list of DataRows. Actually a misnomer because this class does not use a list but
 * an iterator over an arbitrary collection.
 * 
 * @author Ingo Mierswa Exp $
 */
public class ListDataRowReader implements DataRowReader {

	private Iterator<DataRow> iterator;

	public ListDataRowReader(Iterator<DataRow> i) {
		this.iterator = i;
	}

	@Override
	public boolean hasNext() {
		return iterator.hasNext();
	}

	@Override
	public DataRow next() {
		return iterator.next();
	}

	/**
	 * Will throw a new {@link UnsupportedOperationException} since {@link DataRowReader} does not
	 * have to implement remove.
	 */
	@Override
	public void remove() {
		throw new UnsupportedOperationException("The method 'remove' is not supported by DataRowReaders!");
	}
}