settingspropertytable.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.gui;

import edu.udo.cs.yale.Yale;
import edu.udo.cs.yale.tools.ParameterService;
import edu.udo.cs.yale.operator.parameter.ParameterType;
import edu.udo.cs.yale.operator.Operator;

import java.util.Set;
import java.util.TreeSet;
import javax.swing.event.TableModelListener;
import javax.swing.event.TableModelEvent;
import java.io.File;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.io.IOException;

public class SettingsPropertyTable extends PropertyTable {

    private ParameterType[] parameterTypes;

    public SettingsPropertyTable() {
	super(new String[] { "Property", "Value"});

	Set allProperties = Yale.getYaleProperties();
	parameterTypes = new ParameterType[allProperties.size()];
	allProperties.toArray(parameterTypes);

	updateTableData(parameterTypes.length);	
	for (int i = 0; i < parameterTypes.length;i++) {
	    ParameterType type = parameterTypes[i];
	    String key = parameterTypes[i].getKey();
	    getDefaultModel().setValueAt(key, i, 0);
	    Object property = System.getProperty(key);
	    if (property == null)
		property = type.getDefaultValue();
	    getDefaultModel().setValueAt(property, i, 1);
	}
	updateEditorsAndRenderers();
    }

    public ParameterType getParameterType(int row) { return parameterTypes[row]; }
    public Operator getOperator(int row) { return null; }

    private String getPropertyValue(int index) {
	Object value = getDefaultModel().getValueAt(index, 1);
	if (value == null) return null;
	return value.toString();
    }

    public void applyProperties() {
	for (int i = 0; i < parameterTypes.length; i++) {
	    String value = getPropertyValue(i);
	    if (value != null)
		System.setProperty(parameterTypes[i].getKey(), value);
	}
    }

    public void save() throws IOException {
	File configFile = ParameterService.getUserConfigFile("yalerc" + "." + System.getProperty("os.name"));
	PrintWriter out = new PrintWriter(new FileWriter(configFile));
	for (int i = 0; i < parameterTypes.length; i++) {
	    String key   = parameterTypes[i].getKey();
	    String value = getPropertyValue(i);
	    if (value != null) {
		System.setProperty(key, value);
		out.println("# " + parameterTypes[i].getDescription());
		out.println(key + " = " + value);
	    }
	}
	out.close();
    }
}