/*
* Copyright (C) 2003-2012 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.views;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.jcr.Node;
import javax.jcr.NodeIterator;
import javax.jcr.Session;
import org.apache.commons.lang.StringUtils;
import org.exoplatform.commons.upgrade.UpgradeProductPlugin;
import org.exoplatform.commons.utils.PrivilegedSystemHelper;
import org.exoplatform.commons.version.util.VersionComparator;
import org.exoplatform.container.xml.InitParams;
import org.exoplatform.services.cms.BasePath;
import org.exoplatform.services.cms.impl.DMSConfiguration;
import org.exoplatform.services.cms.impl.DMSRepositoryConfiguration;
import org.exoplatform.services.cms.views.ManageViewService;
import org.exoplatform.services.jcr.RepositoryService;
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;
/**
* Created by The eXo Platform SAS
* Author : Nguyen Anh Vu
* vuna@exoplatform.com
* Feb 24, 2012
*
* This class will be used to upgrade pre-defined templates of Site Explorer. Templates with desire of manual upgration
* can be specified in file configuration.properties.<br>
* Syntax :<br>
* unchanged-site-explorer-templates={templates name list}
* For examples :<br>
* unchanged-site-explorer-templates=ThumbnailsView, ContentView
*
*/
public class SiteExplorerTemplateUpgradePlugin extends UpgradeProductPlugin {
private static final Log log = ExoLogger.getLogger(SiteExplorerTemplateUpgradePlugin.class.getName());
private NodeHierarchyCreator nodeHierarchyCreator_;
private DMSConfiguration dmsConfiguration_;
private RepositoryService repositoryService_;
private ManageViewService manageViewService_;
public SiteExplorerTemplateUpgradePlugin(NodeHierarchyCreator nodeHierarchyCreator, RepositoryService repoService,
DMSConfiguration dmsConfiguration, ManageViewService manageViewService,
InitParams initParams) {
super(initParams);
this.nodeHierarchyCreator_ = nodeHierarchyCreator;
this.repositoryService_ = repoService;
this.dmsConfiguration_ = dmsConfiguration;
this.manageViewService_ = manageViewService;
}
public void processUpgrade(String oldVersion, String newVersion) {
if (log.isInfoEnabled()) {
log.info("Start " + this.getClass().getName() + ".............");
}
String unchangedViews = PrivilegedSystemHelper.getProperty("unchanged-site-explorer-templates");
SessionProvider sessionProvider = null;
if (StringUtils.isEmpty(unchangedViews)) {
unchangedViews = "";
}
try {
Set<String> unchangedViewSet = new HashSet<String>();
Set<String> configuredTemplates = manageViewService_.getConfiguredTemplates();
List<Node> removedNodes = new ArrayList<Node>();
for (String unchangedView : unchangedViews.split(",")) {
unchangedViewSet.add(unchangedView.trim());
}
//get all old query nodes that need to be removed.
sessionProvider = SessionProvider.createSystemProvider();
DMSRepositoryConfiguration dmsRepoConfig = dmsConfiguration_.getConfig();
Session session = sessionProvider.getSession(dmsRepoConfig.getSystemWorkspace(),
repositoryService_.getCurrentRepository());
String ecmExplorerViewNodePath = nodeHierarchyCreator_.getJcrPath(BasePath.ECM_EXPLORER_TEMPLATES);
Node ecmExplorerViewNode = (Node)session.getItem(ecmExplorerViewNodePath);
NodeIterator iter = ecmExplorerViewNode.getNodes();
while (iter.hasNext()) {
Node viewNode = iter.nextNode();
if (!unchangedViewSet.contains(viewNode.getName()) &&
configuredTemplates.contains(viewNode.getName())) {
removedNodes.add(viewNode);
}
}
//remove the old query nodes
for (Node removedNode : removedNodes) {
try {
removedNode.remove();
ecmExplorerViewNode.save();
} catch (Exception e) {
if (log.isInfoEnabled()) {
log.error("Error in " + this.getName() + ": Can not remove old query node: " + removedNode.getPath());
}
}
}
//re-initialize new views
manageViewService_.init();
} catch (Exception e) {
if (log.isErrorEnabled()) {
log.error("An unexpected error occurs when migrating Site Explorer views:", e);
}
} finally {
if (sessionProvider != null) {
sessionProvider.close();
}
}
}
@Override
public boolean shouldProceedToUpgrade(String newVersion, String previousVersion) {
// --- return true only for the first version of platform
return VersionComparator.isAfter(newVersion,previousVersion);
}
}