/*
* Copyright (C) 2009 eXo Platform SAS.
*
* This 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 software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.services.jcr.impl.core.version;
import org.exoplatform.services.jcr.core.nodetype.NodeTypeDataManager;
import org.exoplatform.services.jcr.dataflow.ItemDataConsumer;
import org.exoplatform.services.jcr.dataflow.ItemDataTraversingVisitor;
import org.exoplatform.services.jcr.datamodel.NodeData;
import org.exoplatform.services.jcr.datamodel.PropertyData;
import org.exoplatform.services.jcr.datamodel.QPath;
import org.exoplatform.services.jcr.impl.Constants;
import org.exoplatform.services.jcr.impl.core.SessionDataManager;
import org.exoplatform.services.jcr.impl.dataflow.ValueDataUtil;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import java.util.Stack;
import javax.jcr.RepositoryException;
/**
* Created by The eXo Platform SAS 22.06.2007 Traverse through all versions in
* the version history and check if visited child histories isn't used in
* repository. If the child version isn't used it will be removed immediately.
*
* @author <a href="mailto:peter.nedonosko@exoplatform.com.ua">Peter
* Nedonosko</a>
* @version $Id: ChildVersionRemoveVisitor.java 11907 2008-03-13 15:36:21Z ksm $
*/
public class ChildVersionRemoveVisitor extends ItemDataTraversingVisitor
{
private final Log log = ExoLogger.getLogger("exo.jcr.component.core.ChildVersionRemoveVisitor");
protected final Stack<NodeData> parents = new Stack<NodeData>();
protected final NodeTypeDataManager nodeTypeDataManager;
protected final QPath ancestorToSave;
protected final QPath containingHistory;
public ChildVersionRemoveVisitor(ItemDataConsumer dataManager, NodeTypeDataManager nodeTypeDataManager,
QPath containingHistory, QPath ancestorToSave)
{
super(dataManager);
this.ancestorToSave = ancestorToSave;
this.containingHistory = containingHistory;
this.nodeTypeDataManager = nodeTypeDataManager;
}
protected SessionDataManager dataManager()
{
return (SessionDataManager)dataManager;
}
@Override
protected void entering(PropertyData property, int level) throws RepositoryException
{
if (property.getQPath().getName().equals(Constants.JCR_CHILDVERSIONHISTORY)
&& nodeTypeDataManager.isNodeType(Constants.NT_VERSIONEDCHILD, parents.peek().getPrimaryTypeName(), parents
.peek().getMixinTypeNames()))
{
// check and remove child VH
String vhID = ValueDataUtil.getString(property.getValues().get(0));
dataManager().removeVersionHistory(vhID, containingHistory, ancestorToSave);
}
}
@Override
protected void entering(NodeData node, int level) throws RepositoryException
{
parents.push(node);
}
@Override
protected void leaving(PropertyData property, int level) throws RepositoryException
{
}
@Override
protected void leaving(NodeData node, int level) throws RepositoryException
{
parents.pop();
}
}