/*
* Copyright (c) 2009, 2010, 2011, B3log Team
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.b3log.solo.upgrade;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.b3log.latke.Keys;
import org.b3log.latke.repository.Query;
import org.b3log.latke.repository.Transaction;
import org.b3log.solo.SoloServletListener;
import org.b3log.solo.model.Page;
import org.b3log.solo.repository.PageRepository;
import org.b3log.solo.repository.impl.PageGAERepository;
import org.json.JSONArray;
import org.json.JSONObject;
/**
* Upgrader for <b>v020</b> to <b>v021</b>.
*
* @author <a href="mailto:DL88250@gmail.com">Liang Ding</a>
* @version 1.0.0.2, Jan 12, 2011
*/
public final class V020ToV021 extends HttpServlet {
/**
* Default serial version uid.
*/
private static final long serialVersionUID = 1L;
/**
* Logger.
*/
private static final Logger LOGGER =
Logger.getLogger(V020ToV021.class.getName());
/**
* Page repository.
*/
private PageRepository pageRepository =
PageGAERepository.getInstance();
@Override
protected void doGet(final HttpServletRequest request,
final HttpServletResponse response)
throws ServletException, IOException {
if ("0.2.1".equals(SoloServletListener.VERSION)) {
LOGGER.info("Checking for consistency....");
final Transaction transaction = pageRepository.beginTransaction();
try {
final Query query = new Query();
final JSONObject result = pageRepository.get(query);
final JSONArray array = result.getJSONArray(Keys.RESULTS);
for (int i = 0; i < array.length(); i++) {
final JSONObject page = array.getJSONObject(i);
if (!page.has(Page.PAGE_PERMALINK)) {
final String pageId = page.getString(
Keys.OBJECT_ID);
page.put(Page.PAGE_PERMALINK, "/page.do?oId=" + pageId);
pageRepository.update(pageId, page);
LOGGER.log(Level.INFO, "Updated page[oId={0}]",
pageId);
}
}
if (transaction.isActive()) {
transaction.commit();
}
} catch (final Exception e) {
if (transaction.isActive()) {
transaction.rollback();
}
LOGGER.log(Level.SEVERE, e.getMessage(), e);
throw new ServletException("Upgrade fail from v020 to v021");
}
final PrintWriter writer = response.getWriter();
final String upgraded =
"Upgraded from v020 to v021 successfully :-)";
LOGGER.info(upgraded);
writer.print(upgraded);
writer.close();
LOGGER.info("Checked for consistency");
}
}
}