/*
* Copyright (C) 2003-2013 eXo Platform SAS.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.exoplatform.ecms.upgrade.folksonomy;
import javax.jcr.Node;
import javax.jcr.NodeIterator;
import javax.jcr.Session;
import org.exoplatform.commons.upgrade.UpgradeProductPlugin;
import org.exoplatform.commons.version.util.VersionComparator;
import org.exoplatform.container.xml.InitParams;
import org.exoplatform.services.cms.folksonomy.NewFolksonomyService;
import org.exoplatform.services.cms.link.LinkManager;
import org.exoplatform.services.jcr.ext.common.SessionProvider;
import org.exoplatform.services.jcr.ext.hierarchy.NodeHierarchyCreator;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import org.exoplatform.services.wcm.utils.WCMCoreUtils;
/**
* Created by The eXo Platform SAS
* Author : eXoPlatform
* vuna@exoplatform.com
* Mar 19, 2013
*/
public class TagsUpgradePlugin extends UpgradeProductPlugin {
public static final String PUBLIC_TAG_NODE_PATH = "exoPublicTagNode";
public static final String COLLABORATION = "collaboration";
private NewFolksonomyService folksonomyService_;
private NodeHierarchyCreator nodeCreator_;
private LinkManager linkManager_;
private static final Log log = ExoLogger.getLogger(TagsUpgradePlugin.class.getName());
public TagsUpgradePlugin(NewFolksonomyService folksonomyService,
NodeHierarchyCreator nodeCreator,
LinkManager linkManager,
InitParams initParams) {
super(initParams);
this.folksonomyService_ = folksonomyService;
this.nodeCreator_ = nodeCreator;
this.linkManager_ = linkManager;
}
@Override
public void processUpgrade(String oldVersion, String newVersion) {
if (log.isInfoEnabled()) {
log.info("Start " + this.getClass().getName() + ".............");
}
SessionProvider sessionProvider = null;
try {
//create temp folder
sessionProvider = SessionProvider.createSystemProvider();
Session session = sessionProvider.getSession(COLLABORATION, WCMCoreUtils.getRepository());
Node tempFolder = session.getRootNode().addNode("temp");
session.save();
//iterate though all tags
String publicTagNodePath = nodeCreator_.getJcrPath(PUBLIC_TAG_NODE_PATH);
for (NodeIterator oldTagIter = ((Node)session.getItem(publicTagNodePath)).getNodes();
oldTagIter.hasNext();) {
Node oldTag = oldTagIter.nextNode();
try {
String tagName = oldTag.getName();
if (log.isInfoEnabled()) {
log.info("Migrating tag '" + tagName + "'...");
}
//move old to temp folder
session.move(oldTag.getPath(), tempFolder.getPath() + '/' + tagName);
session.save();
//get all symlinks of old tag, add tag (new tag) for these documents;
for (NodeIterator iter = tempFolder.getNode(tagName).getNodes();iter.hasNext();) {
Node link = iter.nextNode();
if (linkManager_.isLink(link)) {
Node targetDoc = linkManager_.getTarget(link, true);
folksonomyService_.addPublicTag(publicTagNodePath, new String[]{tagName}, targetDoc, COLLABORATION);
}
}
tempFolder.getNode(tagName).remove();
session.save();
} catch (Exception e) {
if (log.isErrorEnabled()) {
log.error("Can not migrate tag '" + oldTag.getName() + "': ", e);
}
}
}
tempFolder.remove();
session.save();
} catch (Exception e) {
if (log.isErrorEnabled()) {
log.error("An unexpected error occurs when migrating tags: ", e);
}
} finally {
if (sessionProvider != null) {
sessionProvider.close();
}
}
if (log.isInfoEnabled()) {
log.info("Finish " + this.getClass().getName() + ".............");
}
}
@Override
public boolean shouldProceedToUpgrade(String newVersion, String previousVersion) {
// --- return true only for the first version of platform
return VersionComparator.isAfter(newVersion,previousVersion);
}
}