/**
 * 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.operator.condition;

import com.rapidminer.operator.IllegalInputException;
import com.rapidminer.operator.OperatorChain;
import com.rapidminer.operator.WrongNumberOfInnerOperatorsException;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;


/**
 * This condition is a container for other (simple) inner operator conditions. This can for example
 * be used to define several {@link SpecificInnerOperatorCondition} conditions for a chain. The
 * output of the last added condition is used as total output.
 * 
 * @author Ingo Mierswa
 * @deprecated
 */
@Deprecated
public class CombinedInnerOperatorCondition implements InnerOperatorCondition {

	private final List<InnerOperatorCondition> conditions = new LinkedList<InnerOperatorCondition>();

	public CombinedInnerOperatorCondition() {}

	public void addCondition(InnerOperatorCondition condition) {
		this.conditions.add(condition);
	}

	@Override
	public Class<?>[] checkIO(OperatorChain chain, Class<?>[] input)
			throws IllegalInputException, WrongNumberOfInnerOperatorsException {
		Class<?>[] innerOutput = input;
		Iterator<InnerOperatorCondition> i = conditions.iterator();
		while (i.hasNext()) {
			InnerOperatorCondition condition = i.next();
			innerOutput = condition.checkIO(chain, input);
		}
		return innerOutput;
	}

	@Override
	public String toHTML() {
		StringBuffer result = new StringBuffer("<ul>");
		Iterator<InnerOperatorCondition> i = conditions.iterator();
		while (i.hasNext()) {
			result.append("<li>" + i.next().toHTML() + "</li>");
		}
		result.append("</ul>");
		return result.toString();
	}
}