net.sourceforge.sqlexplorer.XMLUtils.java Source code

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Here is the source code for net.sourceforge.sqlexplorer.XMLUtils.java

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/*
 * Copyright (C) SQL Explorer Development Team
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package net.sourceforge.sqlexplorer;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;

import net.sourceforge.sqlexplorer.plugin.SQLExplorerPlugin;

import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

/**
 * helper class for reading and writing XML files
 * 
 * @author Heiko
 *
 */
public class XMLUtils {

    public static void save(Element pRoot, File pFile) {
        try {
            XMLWriter xmlWriter = new XMLWriter(new FileOutputStream(pFile), OutputFormat.createPrettyPrint());
            xmlWriter.startDocument();
            xmlWriter.write(pRoot);
            xmlWriter.endDocument();
            xmlWriter.flush();
            xmlWriter.close();
        } catch (Exception e) {
            SQLExplorerPlugin.error("Couldn't save: " + pFile.getAbsolutePath(), e);
        }

    }

    public static Element readRoot(File pFile) {
        if (!pFile.exists()) {
            return null;
        }
        try {
            return readRoot(new FileInputStream(pFile));
        } catch (DocumentException e) {
            SQLExplorerPlugin.error("Cannot load: " + pFile.getAbsolutePath(), e);
        } catch (FileNotFoundException ignored) {
            // impossible :-)

        }
        return null;
    }

    public static Element readRoot(InputStream pFile) throws DocumentException {
        SAXReader reader = new SAXReader();
        return reader.read(pFile).getRootElement();
    }
}