LoaderXML.java

/**
 * ORIPA - Origami Pattern Editor 
 * Copyright (C) 2005-2009 Jun Mitani http://mitani.cs.tsukuba.ac.jp/

    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 oripa.doc.loader;

import java.beans.XMLDecoder;
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;

import oripa.DataSet;
import oripa.doc.Doc;
import oripa.file.FileVersionError;
import oripa.resource.Version;

public class LoaderXML implements Loader{

    public DataSet loadAsDataSet(String filePath) {
        DataSet dataset;
        try {
            XMLDecoder dec = new XMLDecoder(
                    new BufferedInputStream(
                    new FileInputStream(filePath)));
            dataset = (DataSet) dec.readObject();
            dec.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            return null;
        }

        return dataset;
    }

	@Override
	public Doc load(String filePath) throws FileVersionError {
		
		Doc doc = new Doc();
		
		DataSet data = loadAsDataSet(filePath);
		
		if (data.getMainVersion() > Version.FILE_MAJOR_VERSION) {
			throw new FileVersionError();
		}
		
		
		data.recover(doc);
		
		
		return doc;
	}
}