net.bpfurtado.ljcolligo.persistence.xml.Map2XMLWriter.java Source code

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Here is the source code for net.bpfurtado.ljcolligo.persistence.xml.Map2XMLWriter.java

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/**
 * Created by Bruno Patini Furtado [http://bpfurtado.livejournal.com]
 * Created on Nov 2007
 * 
 * This file is part of LJColligo.
 * 
 * LJColligo 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.
 * 
 * LJColligo 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 LJColligo.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * Project page: http://sourceforge.net/projects/ljcolligo/
 */
package net.bpfurtado.ljcolligo.persistence.xml;

import java.io.File;
import java.nio.charset.Charset;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

import net.bpfurtado.ljcolligo.util.Util;

import org.apache.log4j.Logger;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

public class Map2XMLWriter {
    @SuppressWarnings("unused")
    private static final Logger logger = Logger.getLogger(Map2XMLWriter.class);

    public static final String EVENT_TAG_NAME = "event";
    private static final String EVENT_BODY_TAG_NAME = "body";

    private Element root;

    public Map2XMLWriter() {
        Document doc = DocumentHelper.createDocument();
        Element root = doc.addElement("events");
        this.root = root;
    }

    public void addEvent(Map<String, Object> event) {
        mapToXML(root, event);
    }

    private void mapToXML(Element thisRoot, Map<String, Object> event) {
        Element node = null;
        if (thisRoot.equals(root)) {
            node = thisRoot.addElement(EVENT_TAG_NAME);
        } else {
            node = thisRoot;
        }

        for (Entry<String, Object> e : event.entrySet()) {
            if (e.getValue() instanceof HashMap) {
                Element newRoot = node.addElement(e.getKey());
                mapToXML(newRoot, (HashMap<String, Object>) e.getValue());
            } else {
                String value = null;
                if (!(e.getValue() instanceof String) && !(e.getValue() instanceof Integer)) {
                    value = new String((byte[]) e.getValue(), Charset.forName("UTF-8"));
                } else {
                    value = e.getValue().toString();
                }

                if (e.getKey().equals(EVENT_TAG_NAME)) {
                    node.addElement(EVENT_BODY_TAG_NAME).addCDATA(value);
                } else {
                    node.addElement(e.getKey()).setText(value);
                }
            }
        }
    }

    public void save(File file) {
        Util.save(root, file);
    }
}