org.vosao.business.impl.imex.MessagesExporterImpl.java Source code

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Here is the source code for org.vosao.business.impl.imex.MessagesExporterImpl.java

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/**
 * Vosao CMS. Simple CMS for Google App Engine.
 * 
 * Copyright (C) 2009-2010 Vosao development team.
 *
 * This library 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * email: vosao.dev@gmail.com
 */

package org.vosao.business.impl.imex;

import java.util.Iterator;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.vosao.business.imex.MessagesExporter;
import org.vosao.dao.DaoTaskException;
import org.vosao.entity.MessageEntity;

/**
 * @author Alexander Oleynik
 */
public class MessagesExporterImpl extends AbstractExporter implements MessagesExporter {

    public MessagesExporterImpl(ExporterFactoryImpl factory) {
        super(factory);
    }

    @Override
    public String createMessagesXML() {
        Document doc = DocumentHelper.createDocument();
        Element messagesElement = doc.addElement("messages");
        createMessagesXML(messagesElement);
        return doc.asXML();
    }

    private void createMessagesXML(Element messagesElement) {
        List<MessageEntity> list = getDao().getMessageDao().select();
        for (MessageEntity message : list) {
            createMessageXML(messagesElement, message);
        }
    }

    private void createMessageXML(Element messagesElement, final MessageEntity message) {
        Element messageElement = messagesElement.addElement("message");
        messageElement.addElement("language").setText(message.getLanguageCode());
        messageElement.addElement("code").setText(message.getCode());
        messageElement.addElement("value").setText(message.getValue());
    }

    public void readMessages(Element messagesElement) throws DaoTaskException {
        for (Iterator<Element> i = messagesElement.elementIterator(); i.hasNext();) {
            Element element = i.next();
            if (element.getName().equals("message")) {
                String language = element.elementText("language");
                String code = element.elementText("code");
                String value = element.elementText("value");
                MessageEntity message = getDao().getMessageDao().getByCode(code, language);
                if (message == null) {
                    message = new MessageEntity(code, language, value);
                }
                message.setValue(value);
                getDaoTaskAdapter().messageSave(message);
            }
        }
    }

    /**
     * Read and import data from _messages.xml file.
     * @param xml - _messages.xml file content.
     * @throws DocumentException
     * @throws DaoTaskException
     */
    public void readMessagesFile(String xml) throws DocumentException, DaoTaskException {
        Document doc = DocumentHelper.parseText(xml);
        readMessages(doc.getRootElement());
    }
}