/*
* 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.dataflow.session;
import org.exoplatform.services.jcr.core.ExtendedSession;
import org.exoplatform.services.jcr.dataflow.ItemState;
import org.exoplatform.services.jcr.dataflow.PlainChangesLog;
import org.exoplatform.services.jcr.dataflow.PlainChangesLogImpl;
import org.exoplatform.services.jcr.datamodel.QPath;
import org.exoplatform.services.jcr.impl.Constants;
import java.util.List;
import java.util.Map;
/**
* Created by The eXo Platform SAS.<br/> Responsible for managing session changes log. Relying on
* fact that ItemData inside ItemState SHOULD be TransientItemData
*
* @author Gennady Azarenkov
* @version $Id: SessionChangesLog.java 34801 2009-07-31 15:44:50Z dkatayev $
*/
public final class SessionChangesLog extends PlainChangesLogImpl
{
/**
* Create empty ChangesLog.
*
* @param sessionId
*/
public SessionChangesLog(ExtendedSession session)
{
super(session);
}
/**
* Create ChangesLog and populate with given items changes.
*
* @param items
* @param sessionId
*/
public SessionChangesLog(List<ItemState> items, ExtendedSession session)
{
super(items, session);
for (int i = 0, length = items.size(); i < length; i++)
{
ItemState change = items.get(i);
addItem(change);
}
}
/**
* An example of use: transient changes of item added and removed in same session. These changes
* must not fire events in observation.
*
* @param identifier
*/
public void eraseEventFire(String identifier)
{
ItemState item = getItemState(identifier);
if (item != null)
{
item.eraseEventFire();
Map<String, ItemState> children = lastChildPropertyStates.get(identifier);
if (children != null)
{
// Call the method ItemState.eraseEventFire() on each properties
for (ItemState child : children.values())
{
child.eraseEventFire();
}
}
children = lastChildNodeStates.get(identifier);
if (children != null)
{
// Recursively call the method eraseEventFire(String identifier) for each sub node
for (ItemState child : children.values())
{
eraseEventFire(child.getData().getIdentifier());
}
}
}
}
/**
* Creates new changes log with rootPath and its descendants of this one and removes those
* entries.
*
* @param rootPath
* @return ItemDataChangesLog
*/
public PlainChangesLog pushLog(QPath rootPath)
{
// session instance is always present in SessionChangesLog
PlainChangesLog cLog = new PlainChangesLogImpl(getDescendantsChanges(rootPath), session);
if (rootPath.equals(Constants.ROOT_PATH))
{
clear();
}
else
{
remove(rootPath);
}
return cLog;
}
}