Repository /Debellor/debellor-1.0.jar:org.debellor.core.data.NumericFeature

/*
 *  Debellor
 *
 *  Copyright (C) 2008-2009 by Marcin Wojnarski
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see http://www.gnu.org/licenses/.
 */
package org.debellor.core.data;

import org.debellor.core.DataObject;
import org.debellor.core.DataType;

/**
 * @author Marcin Wojnarski
 *
 */
public final class NumericFeature extends DataObject implements Comparable<NumericFeature> {
	
	/** Does not hold any information, only sets {@code dataClass} field
	 * of the base DataType class. */
	public static final class NumericFeatureType extends DataType {
		public NumericFeatureType()	{ super(NumericFeature.class); }

		@Override
		public String toString() {
			return "numeric";
		}
	}
	
	
	public final double value;
	

	public NumericFeature(double value) {
		this.value = value;
	}

	@Override
	public String toString() {
		return String.valueOf(value);
	}

	@Override
	public boolean equals(Object obj) {
		if((obj == null) || !(obj instanceof NumericFeature)) return false;
		return value == ((NumericFeature) obj).value;
	}

	@Override
	public int hashCode() {
		long bits = Double.doubleToLongBits(value);
		return (int)(bits ^ (bits >>> 32));
	}

	@Override
	public int compareTo(NumericFeature n) {
		return Double.compare(value, n.value);
	}
	
}