/*
 *  RapidMiner
 *
 *  Copyright (C) 2001-2014 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.learner.associations.fpgrowth;

import java.util.Collection;
import java.util.LinkedList;
import java.util.List;

/** 
 * An entry in the header table.
 * 
 * @author Sebastian Land
 */
public class Header {

	FrequencyStack frequencies;

	List<FPTreeNode> siblingChain;

	public Header() {
		frequencies = new ListFrequencyStack();
		siblingChain = new LinkedList<FPTreeNode>();
	}

	public void addSibling(FPTreeNode node) {
		siblingChain.add(node);
	}

	public Collection<FPTreeNode> getSiblingChain() {
		return siblingChain;
	}

	public FrequencyStack getFrequencies() {
		return frequencies;
	}
}
