xmleditor.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.Experiment;
import edu.udo.cs.yale.operator.Operator;
import edu.udo.cs.yale.tools.LogService;
import edu.udo.cs.yale.tools.ParameterService;

import java.io.*;
import java.awt.*;
import javax.swing.*;

/** A text area for editing the experiment as xml. 
 *  @version $Id: XMLEditor.java,v 2.7 2004/08/27 11:57:34 ingomierswa Exp $ 
 */
public class XMLEditor extends JPanel implements ExperimentEditor {

    private JEditorPane editor = new JEditorPane();
    private MainFrame mainFrame;

    public XMLEditor(MainFrame mainFrame) {
	super(new BorderLayout());
	this.mainFrame = mainFrame;
	add(new JScrollPane(editor), BorderLayout.CENTER);
    }

    public void setOperator(Operator root) {
	try {
	    StringWriter buffer = new StringWriter();
	    root.writeXML(new PrintWriter(buffer), "");
	    editor.setText(buffer.toString());
	} catch (IOException e) {
	    SwingTools.showErrorMessage("In XMLEditor.setOperator:", e);
	}	
    }

    public void experimentChanged(Operator op) {
	setOperator(op);
    }

    public Component getMainComponent() {
	return editor;
    }

    public void validateExperiment() throws Exception {
	InputStream in = new ByteArrayInputStream(editor.getText().getBytes());
	Experiment newExp = new Experiment(in);
	in.close();
	if (!newExp.getRootOperator().configurationEquals(Yale.getExperiment().getRootOperator())) {
	    // this is a small hack. 
	    // One could use Yale.setExperiment(newExp), but this would not preserve
	    // the filename etc.
	    in = new ByteArrayInputStream(editor.getText().getBytes());
	    Yale.getExperiment().readExperiment(in);
	    in.close();
	    mainFrame.experimentChanged();
	}
    }

    public void setText(String xml) {
	editor.setText(xml);
    }
}