/**
 * 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.postprocessing;

import com.rapidminer.operator.ResultObjectAdapter;
import com.rapidminer.tools.Tools;


/**
 * A threshold for soft2crisp classifying.
 * 
 * @author Ingo Mierswa, Martin Scholz
 */
public class Threshold extends ResultObjectAdapter {

	private static final long serialVersionUID = -5929425242781926136L;

	/** The threshold. */
	private double threshold;

	/** The first class. */
	private String zeroClass;

	/** The second class. */
	private String oneClass;

	public Threshold(double threshold, String zeroClass, String oneClass) {
		this.threshold = threshold;
		this.zeroClass = zeroClass;
		this.oneClass = oneClass;
	}

	public double getThreshold() {
		return this.threshold;
	}

	public String getZeroClass() {
		return zeroClass;
	}

	public String getOneClass() {
		return oneClass;
	}

	public String getExtension() {
		return "thr";
	}

	public String getFileDescription() {
		return "threshold file";
	}

	@Override
	public String toString() {
		StringBuilder builder = new StringBuilder();
		builder.append("Threshold: ");
		builder.append(threshold);
		builder.append(Tools.getLineSeparator());
		builder.append("first class: ");
		builder.append(zeroClass);
		builder.append(Tools.getLineSeparator());
		builder.append("second class: ");
		builder.append(oneClass);

		builder.append(Tools.getLineSeparator());
		builder.append("if confidence(" + oneClass + ") > " + threshold + " then " + oneClass);
		builder.append(Tools.getLineSeparator());
		builder.append("else " + zeroClass);
		return builder.toString();
	}
}