parametertypeboolean.java

一个很好的LIBSVM的JAVA源码。对于要研究和改进SVM算法的学者。可以参考。来自数据挖掘工具YALE工具包。

/*
 *  YALE - Yet Another Learning Environment
 *  Copyright (C) 2001-2004
 *      Simon Fischer, Ralf Klinkenberg, Ingo Mierswa, 
 *          Katharina Morik, Oliver Ritthoff
 *      Artificial Intelligence Unit
 *      Computer Science Department
 *      University of Dortmund
 *      44221 Dortmund,  Germany
 *  email: [e-mail]
 *  web:   http://yale.cs.uni-dortmund.de/
 *
 *  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 2 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, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 *  USA.
 */
package edu.udo.cs.yale.operator.parameter;

import edu.udo.cs.yale.tools.Tools;

public class ParameterTypeBoolean extends ParameterTypeSingle {

    private boolean defaultValue = false;
    private boolean noDefault = true;

    public ParameterTypeBoolean(String key, String description) {
	super(key, description);
	this.noDefault = true;
    }

    public ParameterTypeBoolean(String key, String description, boolean defaultValue) {
	super(key, description);
	this.defaultValue = defaultValue;
	this.noDefault = false;
    }

    public boolean getDefault() { return defaultValue; }

    public Object getDefaultValue() { 
	if (noDefault) return null;
	else return new Boolean(defaultValue); 
    }

    public Object checkValue(Object value) { 
	String string = ((String)value).toLowerCase().trim();
	for (int i = 0; i < Tools.TRUE_STRINGS.length; i++) {
	    if (Tools.TRUE_STRINGS[i].equals(string)) {
		return new Boolean(true);
	    }
	}
	for (int i = 0; i < Tools.FALSE_STRINGS.length; i++) {
	    if (Tools.FALSE_STRINGS[i].equals(string)) {
		return new Boolean(false);
	    }
	}
	Boolean booleanValue = new Boolean(defaultValue);
	illegalValue(value, booleanValue);
	return booleanValue;
    }

    public String getRange() {
	return "boolean" + ((!noDefault) ? ("; default: "+defaultValue) : "");
    }
}